TEL AFA4000/1 Installation And Operating Manual

Contents 1. Introduction.......................................................................................................................................................... 5 1.1 Features ...................................................................................................................................................... 6 2. Safety ...................................................................................................................................................................... 7 2.1 Safety practices ........................................................................................................................................ 7 2.2 Precautions ................................................................................................................................................ 7 2.3 Warnings .................................................................................................................................................... 7 2.4 Operating conditions ............................................................................................................................. 8 2.5 Electrical safety ........................................................................................................................................ 9 2.6 Electrical protection .............................................................................................................................. 10 2.7 EMC compliance .................................................................................................................................... 11 3. Overview: Airflow Monitor ............................................................................................................................. 12 3.1 Display ...................................................................................................................................................... 12 3.2 Alarms and events................................................................................................................................. 14 3.3 Controls and indicators ....................................................................................................................... 16 3.4 Operator display panel menu navigation ...................................................................................... 17 3.5 External connections ............................................................................................................................ 19 3.6 Functions ................................................................................................................................................. 21 3.7 Components ........................................................................................................................................... 26 4. Overview: Auto Sash Controller ................................................................................................................... 28 4.1 Features .................................................................................................................................................... 28 4.2 Auto Sash control options .................................................................................................................. 29 4.3 Control system components .............................................................................................................. 32 5. Installation: Airflow Monitor .......................................................................................................................... 40 5.1 Location .................................................................................................................................................... 40 5.2 Installation ............................................................................................................................................... 42 5.3 Connections ............................................................................................................................................ 45 5.4 Dimensions.............................................................................................................................................. 49

5.5 Start up ..................................................................................................................................................... 51 6. Installation: Auto Sash Controller ................................................................................................................ 53 6.1 Auto Sash Control Unit ........................................................................................................................ 53 6.2 Auto Sash keypad / alarm panel....................................................................................................... 56 6.3 Auto Sash motor drive unit ................................................................................................................ 57 6.4 Sash light curtain ................................................................................................................................... 65 6.5 Installing and aligning the Under Sash sensor ............................................................................. 72 6.6 Tilt switch ................................................................................................................................................. 74 6.7 Sash Low switch ..................................................................................................................................... 75 6.8 Sash position sensor ............................................................................................................................ 77 6.9 Personnel sensor ................................................................................................................................... 79 6.10 Auto Sash System Control Box - general wiring diagram ........................................................ 87 6.11 Start up ..................................................................................................................................................... 88 7. Calibration .......................................................................................................................................................... 89 7.1 AFA4000/1 Airflow Monitor ............................................................................................................... 89 7.2 Auto Sash Controller 1, 2 or 3 position. ......................................................................................... 91 7.3 Sash lock function ................................................................................................................................. 93 7.4 Auto Sash Controller – stand-alone ................................................................................................ 94 8. Configuration ...................................................................................................................................................103 8.1 AFA4000/1 configuration menus ...................................................................................................103 8.2 AFA4000/1/AS configuration menus ............................................................................................111 8.3 Auto Sash Controller system menus .............................................................................................123 9. Auxiliary features and connections ...........................................................................................................131 9.1 Optional input function - temperature sensor ...........................................................................131 9.2 Optional input function – close sash alarm.................................................................................133 10. RS485 communications output ..................................................................................................................136 10.1 Overview and connections ...............................................................................................................136 10.2 Configuration settings .......................................................................................................................138 10.3 Config Manager ...................................................................................................................................140

11. Operation: Airflow Monitor .........................................................................................................................142 11.1 Run screen .............................................................................................................................................142 12. Operation: Auto Sash Controller ................................................................................................................143 12.1 Control philosophy .............................................................................................................................143 12.2 Modes of operation ............................................................................................................................143 12.3 Operation and alarm indication ......................................................................................................147 13. Troubleshooting..............................................................................................................................................149 13.1 Fault finding ..........................................................................................................................................149 13.2 Diagnostics menu................................................................................................................................153 13.3 Auto sash alarm indications .............................................................................................................155 14. Cleaning and maintenance ..........................................................................................................................158 14.1 Cleaning .................................................................................................................................................158 14.2 Contamination .....................................................................................................................................159 14.3 Maintenance .........................................................................................................................................159 15. Technical specifications ................................................................................................................................160 15.1 AFA4000/1 Airflow Monitor .............................................................................................................160 15.2 Auto Sash Controller ..........................................................................................................................162 16. Warranty ............................................................................................................................................................169 17. Index ...................................................................................................................................................................171

1. Introduction The TEL AFA4000 is a system for controlling and monitoring airflow in industrial and educational fume cupboards and biological safety cabinets for user safety. The AFA4000 airflow monitor and controller is available with optional Auto Sash integration. Using the Auto Sash with the AFA4000 controller means you will no longer need a separate Auto Sash keypad. The AFA4000 user interface is full colour, intuitive and is easy to navigate. It features a simple two-step calibration process with on-screen prompts to guide end users. The unrivalled reliability of the AFA4000 means that once calibrated, you will not need to re- calibrate in the future. The AFA4000 has in-built communications as standard and it can be used with either Modbus or BACnet protocol. Featuring an innovative hot wire sensor, the AFA4000 has no inherent drift meaning that the sensor will provide stable readings over many years of operation ensuring reliability and safety. The AFA4000 has full alarm diagnostics and test functionality, a sixty-minute timeline of environmental conditions and field-upgradable software, with password protected menus and diagnostic menus to aid installation and commissioning. This manual covers the AFA4000/1 and AFA4000/1/AS airflow monitors.

1.1 Features • Full colour 3.5” LCD Display for continuous velocity reading in m/sec • Auto Sash integration • BACnet and Modbus on board • Velocity bar graph or fault time line over the last 60 minutes • Visual & audible alarms • Three digital inputs and three digital outputs • Diagnostics Menu • Bespoke overlay designs, with a choice of two, coloured cases • Bespoke software options tailored to customer requirements • Touch sensitive buttons

2. Safety 2.1 Safety practices This guide is a supplement to the safety codes of the user’s country. Not every safety procedure that should be followed is covered by this guide. Maintaining a safe laboratory environment is the responsibility of the user. Review product documentation prior to use and follow instructions carefully. If the Airflow Monitor or Auto Sash Controller are not used or operated in accordance with this manual, the protection provided by the devices may be impaired. 2.2 Precautions • Ensure the equipment voltage corresponds to the voltage available at the installation position. • Do not remove equipment panels without shutting down the equipment and disconnecting the power supply. 2.3 Warnings 2.3.1 Warning notices WARNINGS must be followed in order to avoid personal injury. 2.3.2 Warning labels WARNINGS appear as follows: Switch off the mains voltage and remove the mains cord before maintenance. Always follow the instructions given by warning labels on the equipment. For further information refer to this guide and other documentation provided.

2.4 Operating conditions 2.4.1 General operation The Airflow Monitor and associated equipment have been designed and tested in accordance with the International Electrotechnical Commissions (IEC) safety requirements. The Airflow Monitor conforms to IEC61010-1 (Safety Requirements for electrical equipment for measurement, control and laboratory use) as it applies to IEC Class 1 (earthed) appliances, and therefore meets the requirements of EC directive 2014/30/EU. Adjustment, maintenance or repair of the equipment whilst covers are open or the equipment is in operation is only to be done by skilled persons who are aware of the potential hazards. Make unsafe equipment inoperative. Examples of unsafe equipment: • Appears damaged • Fails to perform correctly • Has undergone transport stresses • Has been stored incorrectly 2.4.2 Environmental conditions Ensure the equipment is used under the following conditions: • Indoors • Temperature, 5°C to 40°C • Relative humidity below 80% for temperatures up to 31°C, decreasing linearly to 50% at 40°C • Electrical supply fluctuations not to exceed +10% of nominal voltage The protection provided by the equipment may be impaired if the environmental conditions do not lie within these parameters.

2.5 Electrical safety Lethal voltages are present at certain points within the equipment. When the equipment is connected to mains power, removing the equipment's covers is likely to expose live parts. Even when the power switch is off, high voltage can still be present. Capacitors within the equipment may still be charged even if the equipment has been disconnected from all live voltage sources. Connect the Airflow Monitor and associated equipment correctly to a suitable electrical supply. The supply must have a correctly installed protective conductor (earth or ground), which must be installed and checked by a qualified electrician before initial power up. Any interruption of the protective conductor inside or outside the Auto-Sash Controller System, or disconnection of the protective conductor terminal is likely to make the equipment dangerous. Never interrupt the protective conductor. If the mains power cord needs to be replaced, ensure that the replacement cord is appropriately rated and approved for the intended use. To prevent potential personal injury and damage to the equipment, switch OFF all components in the system and disconnect them from the mains power supply before altering or making any new electrical connections. When working with the Airflow Monitor System and/or the Auto Sash Controller System: • Do not operate equipment with any covers or internal parts removed. • Disconnect the equipment from live voltage sources before adjustments, replacements, maintenance or repairs are carried out. If the equipment must be operated during adjustment, maintenance or repair, only a supplier’s Service Engineer is to carry out the procedure.

• Ensure equipment that is not electrically safe is made inoperative. Secure the equipment against unauthorised or unintentional operation. Examples of electrically unsafe equipment conditions are as follows: • Appears damaged • Has undergone transport stresses • Has been stored incorrectly 2.6 Electrical protection Observe the following electrical protection precautions: Insulation: Class I rating for external circuits. Only connect equipment that meets the requirements of IEC 61010-1, IEC 60950 or equivalent standards. Installation category: The equipment can withstand transient over-voltages typically present on the mains supply. The normal level of transient over-voltages is impulse withstand (overvoltage) Category II of IEC 60364-4-443. Pollution degree 2: Normally only non-conductive pollution occurs. Occasionally, however, temporary conductivity caused by condensation must be expected. External circuits: External circuits which are connected to the Auto Sash controller, except mains connection, shall be insulated by double or reinforced insulation from the mains.

2.7 EMC compliance 2.7.1 EC Directive The Airflow Monitor and Auto Sash Controller Systems are designed and tested to meet the requirements of the EC directive 2014/30/EU and complies with the EMC standard EN61326 (EMC standard for electrical equipment for measurement, control and laboratory use) and EN55011 (ISM) Class A (RF emissions). 2.7.2 FCC Rules and Regulations The Airflow Monitor System and Auto Sash Controller Systems are classified as digital devices used exclusively as industrial, commercial or medical test equipment. They are exempt from the technical standards specified in Part 15 of the FCC Rules and Regulations based on Section 15.103 (c).

3. Overview: Airflow Monitor 3.1 Display 3.1.1 Operator display panel A Airflow bargraph or timeline display B Airflow velocity display with LED halo (red/amber/green) C Status window, airflow alarm status Auto Sash status (AFA4000/1/AS only) D Menu pushbuttons and alarm mute Auto Sash Up/Down/Cancel buttons (AFA4000/1/AS only) Figure 1: Operator display panel Note: Access to the Calibration and Configuration menus is password protected and is factory set. To access and or change the password contact the supplier for the engineer’s password and enter the passwords in the Main Menu, or alternatively use a laptop connected to the Com port and use the Upload/Download software provided. A B C D

3.1.2 Display features The airflow monitor displays the following features: • The digital display is a backlit, full colour high resolution graphic unit with a visual display area of approximately 45 x 34 mm. The display operates through the software allowing the generation of figures, words and icons. You can choose either blue or black for the background colour of the display. • Using the alarm keypad, you can configure the display to show the fume cupboard velocity in m/sec or fpm. Alternatively, you can configure the display to show AIR FAIL / AIR SAFE continuously. The colour of the velocity on the display screen changes when in an alarm condition, to the following: • Air Safe = White • Low/ High Air Alarm = Red • Warning Air Alarm = Amber An ‘event time line’ segmented into 60 x 1 minute segments scroll across the display (when enabled). The event time line is displayed as a graphical scale ranging over 0-1.00 m/sec that progresses across the screen, representing the airflow value at each segment. The segment colour changes, as above, if the value is in the range of an airflow alarm. • The alternative to the event time line is a dynamic ‘bar graph’ representing the airflow velocity. The display shows an up and down arrow icon, , in the bottom right hand corner of the screen when an input function is set to Hi / Lo (2 speed operation). The up arrow indicates High speed and the down arrow indicates Low speed. • The display shows a Horn icon (with a line across it) when the audible alarm is muted. • The display backlight dims to save energy when the following functions are in use: • Fan Off activated- display backlight dims until Fan On is selected. Backlight brightens to normal level when you access the Set Up or Diagnostics menus.

• Setback activated- display backlight dims until the Setback is deactivated. Backlight brightens to normal level when you access the Set Up or Diagnostics menus. 3.2 Alarms and events Message Displayed when Sash high The Sash alarm is activated, and the sash is raised above the maximum safe working opening. Sash high alternates on/off with the velocity reading. External alarm The external alarm input is activated. External alarm alternates on/off with the velocity reading. Alarm fail The airflow is less than the low air alarm point. Air fail alternates on/off with the velocity reading. High alarm The airflow is more than the high air alarm point. High Air alternates on/off with the velocity reading. Setback The night setback function is activated. Setback alternates on/off with the velocity reading. The display backlight dims. Alarm disabled The alarm disable function is activated. Alarm disable alternates on/off with the velocity reading. Close sash The sash is raised and the operator is not present (when activated). Close sash alternates on/off with the velocity reading. Emergency The emergency input is activated. Emergency alternates on/off with the velocity reading. Up / down arrow The Hi/Lo 2 Speed operation is enabled. Message Displayed when Mains fail The power fails to connect to the monitor, when activated. Note: This is an optional extra feature that requires an additional battery unit.

Message Displayed when Low temperature The cupboard temperature drops below the low temperature alarm point, when activated. The display alternates on/off with the velocity reading. Note: This is an optional extra feature that requires an additional temperature sensor. High temperature The fume cupboard temperature rises above the high temperature alarm point, when activated. Note: This is an optional extra feature that requires an additional temperature sensor.

3.3 Controls and indicators 3.3.1 LED indicators The alarm unit has three LED indicators: Red- Alarm Amber- Caution Green- Safe 3.3.2 Audible alarm sounder The AFA4000/1 has an audible sounder with local or remote mute facilities. You can permanently disable the alarm in the calibration and configuration menus. You can mute the alarm by activating the Setback or Alarm Disable functions. When the audible alarm is muted/ disabled, the mute icon displays at the bottom left side of the screen. When an input is set to the mute function the keypad Mute button is disabled and you can only mute the alarm by using the selected mute input. 3.3.3 Pushbuttons Mute The alarm has a multifunctional Mute button, . Press Mute once, when the alarm is sounding to mute the alarm. Press Mute for 5 seconds to access the calibration and configuration menus. ↑ / ↓ Use the ↑ and ↓ buttons to scroll through the calibration and configuration menus or to select options and values.

3.4 Operator display panel menu navigation To scroll through menu items, press the ↑ and ↓ arrows, then press Mute to select an option. 3.4.1 Main menu To display the Main Menu, from the Run Screen, press and hold the Mute button for 5 seconds until the Main Menu is displayed. Menu item Option Instructions Run Run screen See Operation section Set up Monitor Monitor setup menu See Monitor setup menu section Set up Auto Sash Note: This option is only available if the Auto Sash is connected. Auto Sash Configuration menu See Auto Sash Configuration menu section 3.4.2 Monitor setup menu Menu item Option Instructions Configure * Monitor config menu See section 8. Calibration * Calibration See section 7. Passwords * Monitor passwords menu Select the password to set: • Admin • Calibration • Configure Enter and re-enter the new password, then press the Mute button. Select Done to return to the Main menu.

Menu item Option Instructions Done Return to Main menu Note: Menu items marked * are password protected. To enter the password, use ↑ / ↓ to change each digit of the password, then press Mute. 3.4.3 Auto Sash Configuration menu Note: This option is only available if the Auto Sash is connected. Menu item Option Instructions TEL Sash Closer Shows the firmware (F/W) and Hardware (H/W) versions Read-only information Setup Menu * Auto Sash setup menu See section 8.2.1. Engineering Menu * Auto Sash engineering menu See section 8.2.2. Exit Return to Main menu Note: Menu items marked * are password protected. To enter the password, use ↑ / ↓ to change each digit of the password, then press Mute.

3.5 External connections 3.5.1 Inputs The AFA4000/1 has the following inputs: 3.5.1.1 Input 1, Input2, Input 3 These are volt-free inputs configurable for: • Normally closed relays • Normally open relays or • Analogue 0 - 5 Vdc input The inputs can be configured as: Digital input functions (closed or open volt free contact): Alarm disabled Night set-back External alarm Emergency Sash high High / Low Sash warning Mains fail Fan stop Mute Fire Alarm Analogue input functions: Temperature 3.5.2 Outputs The AFA4000/1 has the following outputs: 3.5.2.1 Relay outputs 1, 2, 3 These are volt-free inputs configurable for: • Normally closed relays or • Normally open relays 3.5.2.2 Analogue output 1 0 - 10 Vdc re-transmission of face velocity over 0 - 1.00 m/sec, for example 0.50 m/sec = 5 Vdc.

3.5.3 Communications 3.5.3.1 Com port This enables connection to a laptop or PC for configuration and for communications to building management or automation systems (BMS/BAS). For specific information on Modbus RTU options and settings, see section 8.1.1.3. For specific information on BACnet options and settings, see section 8.1.1.4. 3.5.4 Power supply Low voltage DC power supply from the mains power adaptor. 3.5.5 Optional inputs 3.5.5.1 Temperature sensor Bespoke temperature sensor for connecting into inputs 1, 2 or 3 to give temperature display with high or low temperature alarms. 3.5.5.2 PIR occupancy sensor Auxiliary PIR used for close sash alarm based on the fume cupboard occupancy. 3.5.5.3 Mains fail battery unit Auxiliary plug-in battery unit has a mains fail alarm.

3.6 Functions 3.6.1 Airflow functions The AFA4000/1 airflow display can be set up using the pushbutton menus to display airflow in units of m/sec or fpm and can also be set to show plain text Air Safe & Air Fail only. The AFA4000/1 has 4 programmable airflow alarms: Safe airflow • Airflow reading above warning level (for example, > 0.45 m/sec). • Green Safe LED on. Warning airflow • Airflow reads between warning level and air fail level (for example, > 0.4 m/sec and < 0.45 m/sec). • Amber Warning LED on. Low airflow • Airflow reads below alarm level for longer than the warning to low air delay time. • Air Fail toggles on / off with display. • Red Alarm LED on (Flashing). • Audible alarm sounds - can be muted by pressing the Mute pushbutton. • Low air relay operates (if configured). • Reset: when airflow rises 0.02 m/sec above Low air level for longer than the low air to warning air delay time, the Low air alarm resets automatically. High airflow If configured: • Airflow reading above high level (for example > 1.50 m/sec) • High Air toggles on / off with display. • Red Alarm LED on (Solid). • High air relay operates (when configured).

3.6.2 Audible alarm mute When the audible alarm is muted via the Mute button, an icon ( ) displays. The audible alarm can be permanently disabled by selecting Not Enabled in the Cal Config menu (Setup Monitor > Configure > Cal Config Menu > Audible Alarm). 3.6.3 Input functions The AFA4000/1 has 3 programmable inputs that can be set to: • Analogue (0 - 5 Vdc) • Digital open or • Digital closed operation 3.6.3.1 Analogue input functions Function Description Temperature • Any Input set to Analogue - Temperature • Temperature is displayed alongside airflow velocity in °C or °F • Low Temp toggles on / off with display if temperature is less than the Low Temp Alarm point • Red Alarm LED on (Flashing) • Audible alarm sounds - can be muted by pressing the Mute pushbutton • Low Temp relay operates (when configured) • High Temp toggles on / off with display if temperature is higher than the High Temp Alarm point • Red Alarm LED on (Flashing) • Audible alarm sounds - can be muted by pressing the Mute pushbutton • High Temp relay operates (if configured)

3.6.3.2 Digital input functions Function Description Alarm disable When input configured as Alarm is disabled: • Alarm disabled is displayed. • Red LED on (Flashing). • Audible alarm muted. • Mute Icon shown on display. Night set-back When input configured as Night Set-back is activated: • Night Set-back Icon displayed. • Audible alarm muted. • Mute Icon shown on display. • Low Air alarm muted if set to Maintain Low Air. • Reduce Low Air & Warning alarms active if set to Reduce Low Air. External alarm When input configured as External alarm is activated: • Red LED on (Flashing) – (when configured). • External Alarm toggles on / off with display - (when configured). • Audible alarm sounds. Can be muted by pressing the Mute pushbutton. • External Alarm relay operates (when configured). Sash High When input configured as Sash High is activated: • Amber LED on Solid (Flashing when alarm muted) • Sash High toggles on / off with display if sash height > calibrated position • Audible alarm sounds. Can be muted by pressing the Mute pushbutton • Sash High relay operates (when configured) • Alarm re-activates after time delay when repeat time enabled High / Low When input configured as High/Low is activated: • Display Icon shows ↑ (High) or ↓ (Low)

Function Description • High / Low relay operates (when configured) • This function is designed for two speed fan operation or two position damper operation switched using a micro switch or proximity switch activated at a given position on the sash. Sash Warning When the input configured as Sash Warning is activated: • Red LED on. • Sash Warning - toggles on/off with velocity display. • Audible alarm sounds (after pre-set time). • Audible can be muted by pressing the Mute pushbutton. This silences the alarm (when configured). • Alarm re-activates after time delay when repeat time enabled • Reset when the sash is lowered to closed position and the input is de-activated or an operator is present. Mains Fail (Optional extra feature) When the input configured as Mains Fail is activated: • Red LED on • Mains Fail is displayed • Audible alarm sounds • Audible can be muted by pressing the Mute pushbutton. This silences the alarm (if configured) Fan Stop When the input configured as Fan Stop is activated: • Off is displayed. • Red LED on (Solid). • Audible alarm muted. • When the input configured as Fan Stop is de-activated. • Start Up Timer is displayed. • Audible alarm and relays inhibited until Start up time has elapsed. Note: Used if the AFA4000 is a Slave unit with a common fan. Remote master On/Off signal is used Mute When the input configured as Mute is activated:

Function Description • Red LED on (Solid). • Audible alarm muted. • Mute Icon shown on display. Note: The Mute function disables the pushbutton mute so that any audible alarm can only be muted using the input, for example remote key switch.

3.7 Components 3.7.1 Airflow monitor components • 1 – AFA4000/1 Airflow Monitor • 1 – Airflow Sensor c/w 2 metre RJ45 Sensor Cable • 1 – Plug in type low voltage power supply with 5 metre Cable Figure 2: AFA4000/1 airflow monitor

3.7.2 Auxiliary components The following auxiliary components are available for the AFA4000/1 airflow monitor: Component Function Sash High Proximity Switch Used for Sash High Alarm Sash High Micro Switch Used for Sash High Alarm Personnel Sensor Passive Infra-Red sensor - used for Close Sash Alarm Mains Fail Battery Unit Used for Mains Fail Alarm Temperature Sensor Used for Temperature display and alarms

4. Overview: Auto Sash Controller The Auto Sash Controller automates the opening and closing of the fume hood sash. Automation of the sash movement provides an increased level of safety to the controlled environment. A sash cannot be accidentally left open and can respond to safety critical inputs from external sources, such as fire alarms and ventilation system failures. The Auto Sash Controller facilitates cost savings. When linked to ventilation controls, the automatic closing of an unattended fume hood allows extractor fan speeds and electricity consumption to be reduced. 4.1 Features The Auto Sash Controller has the following features: • Auto-Close The sash automatically closes when the fume hood is unattended. • Auto-Open The sash automatically opens when the user returns. • Sash Lock The sash is programmed to lock at a designated position. • Manual Sash Open/Close To open/close the sash manually. • Keypad Pushbutton Open/Close To open/close the sash using the Keypad Pushbuttons. • Footswitch To open / close the sash using an optional, third party supplied, footswitch. • Tilt Switch To disable the Auto Sash Control Unit using a, third party supplied, tilt switch. • Building Management System (BMS) Inputs The sash automatically closes when a signal is received from the BMS. • Building Management System (BMS) Outputs The Auto Sash Controller sends signals to the BMS regarding the current status of the fume hood.

4.2 Auto Sash control options To open / close the fume hood sash the Auto Sash Controller is fitted with: • A Tiptronic open/close control via the Sash Position Sensor. • A Sash Low micro-switch • A Sash Low proximity switch 4.2.1 Auto Sash Controller with Tiptronic open / close control Tiptronic Open / Close control is the default control setup. It functions via a Sash Position Sensor (sprung potentiometer) with a draw wire (1.2m long) attached to either the sash or the counterweight. The Auto Sash Controller can then be calibrated to give three methods of operation: Method A - Close only • The bottom position is calibrated. • The sash automatically drives to the bottom position, when the user is not present. • Press the ↓ pushbutton to drive the sash to the bottom position, when the user is present. • The ↑ pushbutton is disabled. Method B - 2 Positions • The bottom and mid-positions are calibrated. • The sash automatically drives to the bottom position, when the user is not present. • Press the ↓ pushbutton to drive the sash to the bottom position, when the user is present. • Press the ↑ pushbutton to drive the sash to the mid- position, when the user is present. • When the Tiptronic feature is enabled, manually tip the sash upwards and the sash will drive to the mid- position. • Manually tip the sash downwards and the sash will drive to the bottom position.

• When the Auto Open feature is enabled, the sash automatically drives to the mid-position when the user is present. • There is a time delay following user detection. • When the Auto Lock feature is enabled and a Sash Lock position has been calibrated, the Auto Close feature is disabled and the sash locks in its current position when the sash is raised to the Sash Lock position or higher. This facilitates loading the Fume Cupboard. Method C – 3 Positions • The bottom, mid and top positions are calibrated. • The sash automatically drives to the bottom position, when the user is not present. • Press the Down pushbutton to drive the sash to the bottom position, when the user is present. • Press the Up pushbutton to drive the sash to the next calibrated position, when the user is present. • When the Tiptronic feature is enabled, manually tip the sash upwards and the sash will drive to the next calibrated position. • Manually tip the sash downwards and the sash will drive to the bottom position. • When the Auto Open feature is enabled, the user is present and the sash is lower than the mid position, the sash automatically drives to the mid-position. • There is a time delay following user detection. • When the Auto Lock feature is enabled and a Sash Lock position has been calibrated, the Auto Close feature is disabled and the sash locks in its current position when the sash is raised to the Sash Lock position or higher. This facilitates loading the Fume Cupboard.

4.2.2 Auto Sash Controller with Sash Low micro-switch A Sash Low Micro-Switch can be specified for fitting by TEL or by the fume hood manufacturer. The switch can be arranged to be open / closed when the sash is closed, depending on fitting. The wiring arrangement must be modified for installation and the operational requirements of the fume hood. The following functionality is available: • The sash automatically drives to the bottom position, when the user is not present. • Press the Down pushbutton to drive the sash to the bottom position, when the user is present. • The Up pushbutton is disabled. 4.2.3 Auto Sash Controller with Sash Low proximity switch A Sash Low Proximity Switch can be specified for fitting by TEL or the fume hood manufacturer. The switch can be arranged to be open/closed when the sash is closed, depending on fitting. The wiring arrangement must be modified for installation and the operational requirements of the fume hood. The following functionality is available: • The sash automatically drives to the bottom position, when the user is not present. • Press the Down pushbutton to drive the sash to the bottom position, when the user is present. • The Up pushbutton is disabled.

4.3 Control system components The Auto Sash Control System comprises of a control unit and additional components. Figure 3: Typical location of main components Note: This example installation is fitted with a pulley and wire sash drive.

4.3.1 Auto sash control unit The Auto Sash Control Unit processes inputs from sensors, switches associated with the sash control function and output signals relevant to the motor drive(s) and the alarm panel. Figure 4: Auto Sash Control Unit - single and dual controller enclosure

4.3.2 Personnel sensor Figure 5: Detection area clear Figure 6: Obstruction present The Personnel Sensor is a Passive Infra-Red (PIR) occupancy detector which detects the presence / absence of the fume hood user. Note: If the user is detected, the sash will not automatically close. The Sash can be opened / closed manually or using the Up / Down pushbuttons. On power up, the Personnel Sensor ‘learns’ the reflection characteristics of the environment within its field of view and stores this information as reference background data. The sensor then 're-learns' the background every three minutes. A stationary object, such as a stool, that is left in the field becomes part of the background and is 'ignored' by the sensor. When the user is not present at the fume hood, the sash will close automatically. This follows a pre-set delay time, if the Sash Light Curtain is not broken and the sash is open. Green LED Red LED

4.3.3 Keypad/alarm panel Figure 7: UK / EU keypad Figure 8: US keypad The Keypad/Alarm Panel provides a visual indication of the status of the Auto Sash, this includes fault conditions which are displayed on a Liquid Crystal Display (LCD). 4.3.4 Sash light curtain The Sash Light Curtain is a safety device designed to detect whether the opening below the sash is clear of obstructions before the sash is automatically closed. • When an obstruction is detected, the sash drive is disabled and the alarm is activated. • The Sash Light Curtain comprises an infra-red transmitter mounted on one side of the fume hood and an infra-red receiver mounted on the opposite side of the fume hood's inner chamber. • The infra-red transmitter has multiple, closely spaced, Light Emitting Diodes (LEDs) to facilitate the detection of small objects.

• Objects are detected when infra-red light from the transmitter is not detected by the receiver due to an obstruction in its path. Figure 9: Sash Light Curtain Transmitter and Receiver A separate Sash Light Curtain Control Box includes a sensitivity potentiometer that allows the beam sensitivity adjusted to sense glass or other objects that are partially transparent to infra-red light. Figure 10: Sash Light Curtain Control Box 4.3.5 Under Sash sensor The Under Sash Sensor is an alternative to the Sash Light Curtain which detects whether the opening below the sash is clear from obstructions before the sash is closed. A sensor on one side of the fume hood detects the reflection of a beam of light from a self-adhesive strip of retro-reflective tape mounted on the opposite inside wall of the fume hood.

The sensor incorporates a potentiometer, it allows the beam sensitivity to be adjusted to sense glass objects. 4.3.6 Sash Low switch When a Tiptronic control is not in use, a Sash Low switch is used to signal to the Auto Sash Control Unit that the fume hood sash is closed. The switch can be either a mechanical roller lever type micro-switch or an inductive proximity switch. Roller Lever Micro-Switch Inductive Proximity Switch Figure 11: Typical Sash Low switches 4.3.7 Sash position sensor The Sash Position Sensor comprises of a flexible cable, a spring-loaded spool and a potentiometer. It is used, in conjunction with the Tiptronic control option, to detect and measure vertical sash movement and the position of the fume hood sash. During the initial on-screen calibration set up the sash controller detects the sensor direction of travel and then provides position information of the sash to the Auto Sash Control Unit, to enable calibration of the sash open / closed positions.

Sash Position Sensor Sensor Cable Sensor Potentiometer Figure 12: Sash Position Sensor 4.3.8 Tilt switch The Tilt Switch is an optional, third party supplied component, which is fitted to the fume hood top panel. It operates to isolate the Auto Sash controls, when the top panel is open to facilitate the servicing of the fume hood. Figure 13: Typical third-party tilt switch

4.3.9 Foot switch The Foot Switch is an optional, third party supplied component, which can be positioned on the floor in front of the fume hood and used to open the sash. Figure 14: Typical third party foot switch 4.3.10 Sash drive unit The Sash Drive Unit is a geared electric motor and clutch assembly used to drive the sash. Three types of drive are available, none of which preclude manual opening / closing: • Rack and pinion drive • Chain and sprocket drive • Pulley and wire drive Chain and sprocket drive Rack and pinion drive Pulley and wire drive Figure 15: Example drives

5. Installation: Airflow Monitor This section outlines the installation of the various components of the airflow monitor system. The size and format of individual fume cupboards varies considerably, so specific instructions are not possible, however the principles outlined are valid for all cases. 5.1 Location The AFA4000/1 monitor can be mounted on either side of the fume cupboard. However, when deciding on the location for the airflow monitor and sensor, consider the cable lengths required: • The 5 metre low-voltage cable must reach from the terminals on the back of the AFA4000/1 airflow monitor to the connections on top of the fume cupboard. • The standard 2 metre ‘telephone style’ sensor cable must reach from the back of the AFA4000/1 airflow monitor to the airflow sensor. When possible ensure that the airflow sensor is mounted on the same side of the fume cupboard as the AFA4000/1. Note: Longer sensor cables are available on request.

5.1.1 SM7 airflow sensor installation notes It is very important to position the SM7 airflow sensor in the correct position to give a long-term stable reading of the face velocity. Figure 16: Airflow sensor installation diagram Please read the notes below and if in doubt contact us for further advice. 1. The SM7 sensor must be positioned where it can sense the room pressure of the laboratory. The back-connection spigot of the sensor is designed to accept a tube with outside diameter of 25 mm, which should be connected to the inner chamber of the fume cupboard. This tube and fittings are known as the ‘vent kit’. The ideal position for the end of the 25 mm diameter tube, for most fume cupboards, is 100 mm back from the sash glass and 100 mm higher than the normal sash opening height through the inner side wall. 2. If possible, mount the sensor on the front of the fume cupboard and use a short length of tube. Tube lengths of more than 1 m or smaller diameter will restrict the

airflow through the sensor. This will lead to too much sensitivity being required to calibrate the unit which can lead to instability of the readings or incorrect readings at low velocities. 3. For fume cupboards with a single-skin side-wall, or double-skin, with a small gap between them, it may not be possible to achieve the ideal sensing position using a flexible tube. With a single-skin side-wall it is possible to fix the sensor on the outside of the fume cupboard and connect directly to the inner chamber in the ideal position. This method can only be used for up to two fume cupboards when they are positioned side by side, using the two outer walls. An alternative method is to mount the sensor on the front of the fume cupboard and connect it using a short flexible tube to a rigid wall tube attached to the inner side- wall. Position the open end of this rigid wall tube in the ‘ideal position’ for example, 100 mm back from the sash, and 100 mm higher than the normal sash opening. Fume cupboards with a large internal height can present a difficulty because the tube length to reach the ideal position may be longer than 1m. Where possible, use a tube of 1 metre or less, which may result in a sensing position higher than the ideal. When fitting a sensor to a ’narrow wall’ fume cupboard for the first time, it may be necessary to try various combinations of rigid and flexible tube to find the best combination and position. 4. The sensor should not be mounted in a position where it is subject to draughts from the laboratory air input or ventilation system. 5.2 Installation 5.2.1 AFA4000/1 1. Use the cut-out details provided with the unit (Figure 17) to cut-out and drill the holes in the fume cupboard for the AFA4000/1 mounting bracket. Make sure that the AFA4000 fits into the cut-out before proceeding.

Figure 17: AFA4000 cut-out template Note: Print to A4. Do not scale or print to fit page. Note: Separate mounting boxes and adaptor plates are available for retro-fitting to older fume cupboards.

Figure 18: AFA4000 installation 2. Use 4 fixing screws to secure the mounting bracket to the front panel of the fume cupboard (A in Figure 18). Make sure the 4 fixing screws are fully recessed into the counter-sunk fixing holes (B in Figure 18). 3. Place the AFA4000 onto the top of the mounting bracket and click it into place (C in Figure 18). 4. Push the bottom of the AFA4000 onto the mounting bracket (D in Figure 18). 5. Secure the AFA4000 to the mounting bracket using the fixing screw in the bottom face of the monitor (E in Figure 18). A B C D E

5.2.2 SM7 airflow sensor 1. Use the cut-out details provided with the sensor (Figure 19) to cut-out and drill the holes in the fume cupboard for the SM7 sensor. Make sure that the sensor fits into the cut-out before proceeding. Figure 19: SM7 sensor cut-out template Note: Print to A4. Do not scale or print to fit page. 5.3 Connections 1. Connect the power supply cable into the back of the AFA4000/1 (H in Figure 20) and to the connection on top of the fume cupboard. 2. Connect the ‘telephone style’ airflow sensor plug-in cable to the sensor and the back of the AFA4000/1 unit (J in Figure 20).

Figure 20: AFA4000/1 monitor connections A 0-10 V velocity re-transmission output, 0-10 Vdc over 0-1.00 m/sec / 0-200 fpm G Relay output 3 (used if relay interface is not fitted) B Input 1 – digital or analogue H 15 Vdc power supply (used if relay interface is not fitted) C Input 2 – digital or analogue I Auto sash RJ45 connection (only used on AFA4000/1 – as model) D Input 3 – digital or analogue J Airflow sensor RJ12 connection E Relay output 1 (used if relay interface is not fitted) K 14-way ribbon cable connection to relay interface F Relay output 2 (used if relay interface is not fitted) L RS485 comms port connection A B C D E F G H I J K L

5.5 Start up 5.5.1 AFA4000/1 The AFA4000/1 must be field-calibrated once the room air supply and exhaust is proportionally balanced. When the unit is powered up, the following sequence of events occurs: The alarm performs a self-test of its functions and audible alarm which takes approximately 3 seconds. At the end of the delay, the unit will do one of two things: When the Airflow monitor has been calibrated, the unit enters normal operating mode. The monitor displays airflow velocity, LEDs and the audible alarm is enabled. If the Airflow monitor has not been calibrated, the unit displays the message Requires set up, press Mute to continue. Follow the instructions in the Calibration section (section 7.1). 5.5.2 AFA4000/1/AS The AFA4000/1/AS must be field-calibrated once the room air supply and exhaust is proportionally balanced. When the unit is powered up, the following sequence of events occurs: 1. The alarm performs a self-test of its functions and audible alarm which takes approximately 3 seconds. 2. At the end of the delay, the unit will do one of five things: • When the Airflow monitor has been calibrated, the unit enters normal operating mode. The monitor displays airflow velocity, LEDs and the audible alarm is enabled. • When the Airflow monitor has not been calibrated, the unit displays the message Requires set up, press Mute to continue. • When the Auto Sash Controller has been calibrated, the unit enters normal operating mode. The Controller displays status and alarms in the status window. • When the Auto Sash Controller is connected and has not been calibrated, the status window displays the message Auto Sash Not Configured.

• When the Auto Sash Controller is disconnected, the Auto sash controller status and menus are not displayed.

6. Installation: Auto Sash Controller As the size and format of individual fume hoods vary, the installation instructions that follow are general. The principles outlined should remain valid in all cases. Note: Before starting installation, ensure that the sash is free to move in its runners. Use silicon spray on the sash runners or adjust the sash runner's alignment when the sash does not move freely. 6.1 Auto Sash Control Unit 6.1.1 Mounting the unit The Auto Sash Control Unit can be mounted as follows: • Screwed flat to the outside of the fume hood roof - horizontal mounting Note: For horizontal mounting, the control box should always be mounted with the lid / front panel facing upwards. • Screwed to the outside wall of fume hood wall - vertical mounting Figure 25: Auto Sash Control Unit Lid/Front Panel Figure 26: Rear of Auto Sash Control Unit

Figure 27: Auto Sash Control Unit Connectors, Single and Dual Fume Hoods Once the Auto Sash Control Unit has been positioned, mark its position using the fixing holes in the rear of the housing as a template. Then, attach the Auto Sash Control Unit using screws. 6.1.2 Wiring in the Auto Sash Control Unit For fume hoods with an inner and outer sidewall, route all cables through the sidewall and into the service void. For fume hoods with a single wall, route all cables up the outside of the sidewall, using suitable trunking or fixing pads and ties. When wiring in the Auto Sash Control Unit, observe the following: • Keep cables clear of moving parts. • Use grommets wherever cables pass through sidewalls to prevent abrasion of the cable insulation and / or sidewall. Where a cable is supplied with a DIN connector, the grommet should have a minimum internal diameter of 17mm (0.67"). • Do not overstress cables by bending, for example when passing at 90° through a sidewall.

Figure 28: Sash Control System – general layout, wiring schematic and illustration (inset)

Cable Specifications Mains cable 3-core, 0.7mm², 2m long Light Curtain cable 4-core, 0.5mm², 2m long Keypad cable RJ45, 3 m long Sash Position Sensor cable 4-core, 0.2mm², 2.5m long Personnel Sensor cable 5-core, 0.2mm², 3m long Motor cable 2-core, 0.5mm², 2m long 6.2 Auto Sash keypad / alarm panel Alternative Auto Sash Keypad / Alarm Panels can be supplied for US and EU markets. Both types should be mounted on the front of the fume hood, ensuring there is adequate clearance behind for the cables connecting the keypad to the Auto Sash Control Unit. 6.2.1 Fitting the Auto Sash keypad / alarm panel 1. Fit the Auto Sash Keypad to the fume hood using either a single gang socket for UK applications (Figure 29) or using a cut-out to the (Version 2) dimensions (Figure 30). Figure 29: Version 1 - UK Single Gang Keypad Fits in Standard Single Gang Socket

Figure 30: Version 2 US Single Gang Keypad – (requires cut out in front panel) 2. Connect the Keypad / Alarm Panel to the Auto Sash Control Unit. See the wiring schematic in section 6.10 and Figure 31. Figure 31: Keypad/Alarm Panel Rear View 6.3 Auto Sash motor drive unit A Motor Drive Unit is used to automatically raise and lower the fume hood sash. Three types of drives are available: • Rack and pinion motor drive. • Chain and sprocket motor drive. • Wire and pulley motor drive. The optimal choice of sash drive type depends on whether:

• The installation is part of a new build or retro-fit. • The size and configuration of the fume hood. • The fume hoods location. None of these options preclude manual operation of the sash. 6.3.1 Rack and pinion motor drive The Rack and Pinion Motor Drive uses a rack fitted directly onto the sash frame and a motor drive assembly fitted to a framework above the fume hood. This drive system is ideal for retro-fit installations where there is no access to the sash wires or counterweights and / or where the sash is fitted to a metal framework, for example combination type sash fume hoods. 6.3.1.1 Installing the rack and pinion drive 1. Raise the sash to the fully open position. 2. Offer up the motor assembly and rack to ensure that there is a clearance of at least 1.2 m (47.24") above the top of the sash. Note: The rack is supplied in 1m (39.37") lengths 3. The motor drive assembly should be fitted to a rigid framework and positioned centrally above the sash. To ensure that the T-bar fixing clears the bottom of the motor assembly, there should be at least 50 mm between the top of the sash and the bottom of the motor drive assembly, when the sash is fully opened.

Side view Front view Figure 32: Rack and pinion sash drive motor assembly Note: Ensure that the rack is long enough to protrude through the top of the motor assembly, when the sash is fully closed. 4. When the motor drive assembly is fixed to the fume hood the T-bar should be fixed to the rack and offered up with the sash frame. 5. Ensure that the rack is free to move over the full sash opening before marking up and fixing the T-bar to the sash frame. Note: The rack must to run vertically at 90º to the horizontal axis of the sash frame.

Figure 33: Front view of rack and pinion sash drive 6. When fitting a sash low switch instead of a sash position sensor, the rack will need to be cut to the correct length to enable the switch to operate. Close the sash fully and mark the rack just below the position of the proximity low switch at the top of the motor assembly to ensure that the rack is clear of the switch when the sash is closed. 7. Connect the Sash Drive to the Auto Sash Control Unit using the cables provided (with red and black connectors). See the wiring schematic in section 6.10 and Figure 31. Note: It is important to observe the correct polarity when making electrical connections. 8. Connect the clutch assembly to the Auto Sash Control Unit using the cables provided (with blue and yellow connectors).

Figure 34: Side views of a rack and pinion drive typical installation 6.3.2 Chain and sprocket drives Two types of chain and sprocket drives are available: • Shaft Drive

• Counterweight Drive 6.3.2.1 Chain and sprocket shaft drives In the Shaft Drive arrangement, the motor drive utilises a taper bore sprocket and a roller chain to drive a shaft running between the counterweight pulleys. The motor assembly is supplied fitted to an adjustable bracket so that the correct chain tension can be set. The Shaft Drive arrangement can accommodate one or two sash wires. Figure 35: Typical chain and sprocket shaft drive installation 6.3.2.2 Installing the chain and sprocket shaft drive 1. Fit the taper bore sprocket to the shaft and ensure that the sprocket is securely fitted. Where possible positioned the motor drive and sprocket centrally on the shaft. The motor assembly should be fitted to a rigid framework to support the motor. 2. Loosely fit the chain before fixing the motor plate to ensure the chain is correctly tensioned and aligned.

6.3.2.3 Chain and sprocket counterweight drive In the Counterweight Drive arrangement, the chain and sprocket drive system is used to directly lift the sash counterweight. This is achieved by fitting a roller chain to the counterweight and utilising a separate counterweight and freewheeling sprocket to maintain the correct chain tension. Figure 36: Typical chain and sprocket counterweight drive installation 6.3.3 Installing the chain and sprocket counterweight drive 1. When the motor, chain and freewheeling sprocket has been fitted, manually open / close the sash, to ensure that the motor drive is free running and that the chain is not too slack or too tight. 2. Fit the motor so that the drive sprocket is in line with the counterweight pulley. 3. Fit one end of the chain to the counterweight or sash wire near to the counterweight. 4. Fit the freewheeling sprocket in line with the drive sprocket. 5. Loosely fit the chain over the freewheeling pulley and determine the best position for the chain counterweight.

6. Fit the chain counterweight, using a counterweight guide if necessary. 7. When the motor, chain and counterweight are fitted manually open / close the sash to ensure the motor drive, chain and counterweight are free running. 6.3.4 Wire and pulley drive With the Wire and Pulley Drive, the pulley motor drives the sash wire and can accept both single and dual sash wire systems. The motor assembly is fitted in line with the sash wires and uses two guide pulleys and a drive pulley. The pulley drive is ideal for new fume hoods but can be retro-fitted if a longer replacement sash wire can be fitted. Figure 37: Typical wire and pulley drive installation 6.3.4.1 Installing the wire and pulley drive The motor assembly can be fitted horizontally or vertically on either side of the fume hood, as follows: 1. Fit the motor assembly so that the guide pulleys are in line with the sash wire. 2. Run the sash wire over the first guide pulley, around the drive pulley and then over the final guide pulley. When the motor drive has been installed, open / close the sash to ensure that the sash can travel freely.

6.4 Sash light curtain The Sash Light Curtain consists of three main components and associated wiring: • Sash Light Curtain Control Box • LED Transmitter • LED Receiver The Sash Light Curtain Control Box is connected to the main Auto Sash Control Unit. 6.4.1 Installing the sash light curtain control box 1. Fix the Sash Light Curtain Control Box onto the top of the fume hood, using the tabs attached to the control box and the screws provided. Ensure that there is access to the terminals to connect the wiring. Figure 38: Sash Light Curtain Control Box 2. Use the pre-assembled cables and connectors supplied to connect the Light Curtain Control Box to the Auto Sash Control Unit. See the wiring schematic in section 6.10 and Figure 31.

6.4.2 Installing the sash light curtain transmitter and receiver 1. Find a suitable position near to the back of the sash track. Ensure that the sash handle does not protrude into the light beam and that there are no other obstructions on either side wall. 2. Carefully remove the front plastic covers from the right-hand side of the light curtain receiver and the left-hand side of the light curtain transmitter cases. Figure 39: Light curtain receiver plastic cover 3. Position the light curtain transmitter and receiver on opposite sidewalls. Ensure that the back of the sash handle does not penetrate the light beam path. The sash light curtain transmitter and receiver should be fitted so that their cable entry / exit points are at the top. Ensure that the light beam path is free from other obstructions.

Figure 40: Mounting transmitter / receiver 6.4.3 Aligning the light curtain transmitter and receiver Mount the light curtain receiver and transmitter at the same height on opposing sides of the fume hood opening. A small error in alignment is acceptable. The allowable error is dependent on the spacing between the transmitter and receiver. Figure 41 illustrates the maximum allowable transmitter to receiver misalignment / displacement for a 0 to 3 m (0 to 118.11") range of fume hood widths. For a typical fume hood width of 1 to 2 m (39.37 to 78.740"), the maximum allowable misalignment / displacement ranges from approximately 20 to 40 mm (0.79 to 1.58").

Figure 41: Maximum allowable displacement for a range of fume hood widths 1. The area protected by the light beams should cover the open area under the sash, typically 500 mm (20") from its base. The light curtain transmitter and receiver can be positioned above the bottom of the sash in the fume hood if they are free from obstructions. Where possible, make sure the light path is aligned flush to the bottom of the sash base. Note: There is a 123 mm (4.84") gap from the top of the light curtain transmitter to the first LED down and a 22 mm (0.87") gap from the bottom of the transmitter to the first LED up.

Figure 42: Light curtain vertical range 2. When the light curtain transmitter and receiver have been positioned, mark the sidewall using the fixing holes in the transmitter and receiver as templates. 3. Drill the holes for the fixing screws. Use the 2 mm (0.08") drill bit provided and fix the transmitter and receiver. Figure 43: Transmitter / Receiver fixing holes

4. On a fume hood with an inner and outer sidewall the light curtain transmitter and receiver cables run through the sidewall into the service void and up to the Sash Light Curtain Control Box on top of the fume hood. On a fume hood with a single wall drill the hole in the top soffit panel and run the cables up the sidewalls using suitable trunking or fixing pads and ties. Drill a 17mm (0.67") hole to clear the cable DIN connector. When using a grommet drill a suitable hole in the sidewall to accept the grommet. Figure 44: Light curtain cable entry Note: The hole’s centre should be a minimum of 35 mm (1.38") from the top of the light beam path, so that the cable is not stressed when it bends 90° through the inner sidewall. 5. Pass the cables through the sidewall and connect to the Sash Light Curtain Control Box on the top of the fume hood. 6. Connect the light curtain transmitter and receiver to the Sash Light Curtain Control Box using the plug-in RJ45 cables provided.

Figure 45: Light Curtain Vertical Range Safety Curtain Transmitter and Receiver Wiring Schematic 7. Use the pre-assembled cables provided to connect the output from the Safety Curtain Control Box to the Auto Sash Control Unit. See the wiring schematic in section 6.10 and Figure 31. 8. Fix the light curtain transmitter and receiver to the sidewall using their fixing holes and re-attach the plastic covers.

6.5 Installing and aligning the Under Sash sensor The Under Sash Sensor consists of two components: • Sash Sensor • Retro-reflective Tape Strip 1. Fit the sensor so that its lens is clear of obstructions and below the bottom of the sash handle. Figure 46: Under sash sensor mounting Figure 47: Under sash sensor dimensions Use a suitable bracket so that the sensor position can be adjusted to the required position. 2. Fix the 5 m cable, which is attached to the sensor, to the sash wire using cable ties. Attach the 5 m cable to the sash counterweight to keep the cable taught as the sash opens or closes. Encase the cable from the sash counterweight to the sash controller box can in plastic sheathing to guide the cable slack and stop it from snagging.

When it is not possible to fix the cable to the sash wire, use small diameter trunking to attach the cable to the sash. Use a roller bearing or pulley where the cable runs over a metal surface. Figure 48: Typical under sash sensor retro-installation 3. Fix the retro-reflective tape strip to the inside of the fume hood, on the opposite side to the sensor. Position the centre of the retro-reflective tape strip in line with the centre of the sensor. A small offset between the sensor and retro-reflective tape strip is acceptable. The maximum offset values are shown in Figure 49.

Figure 49: Maximum under sash sensor offset For example, on a 1000 mm wide Fume Hood the sensor can detect the retro- reflective strip up to ± 20 mm either side of the Under Sash Sensor's centreline. 4. Connect to the Auto Sash Control Unit. See the wiring schematic in section 6.10 and Figure 31. 6.6 Tilt switch Tilt Switches are provided in a variety of forms, the installation instructions that follow are therefore general. • Ensure that the Tilt Switch is installed in the correct orientation – ‘open’ when the front panel is closed and ‘closed’ when the front panel is open. • Connect the Tilt Switch to the Auto Sash Control Unit. See the wiring schematic in section 6.10 and Figure 31. • Link out / connect the relevant terminals on the Auto Sash Control Unit when not using a Tilt Switch. See the wiring schematic in section 6.10 and Figure 31.

Figure 50: Tilt switch wiring schematic 6.7 Sash Low switch Two types of Sash Low switch can be used: • Micro-Switch • Proximity Switch Switches signal the sash as being open when the switch is open or closed, depending on the installation requirements. 6.7.1 Installing the Sash Low mcro-switch The Sash Low Micro-Switch is a change-over type switch. When the sash is closed the switch makes or breaks the circuit depending on which terminals are used on the switch for each type of activation. Typically, the switch would be fitted so that the lever engages (pushes in) when the sash is open. Connect the Sash Low Micro-Switch to the Auto Sash Control Unit (Figure 51 See the wiring schematic in section 6.10 and Figure 31. If the switch is installed so that the lever pushes in when the sash is closed, connect the wiring to the Auto Sash Control Unit to terminals C and NO on the switch. If the switch is installed so that the lever pushes in when the sash is open, connect the wiring to the Auto Sash Control Unit to terminals C and NC on the switch.

Figure 51: Sash low micro-switch wiring schematic 6.7.2 Installing the Sash Low proximity switch The Sash Low Proximity Switch is an inductive switch that operates when it comes within range of a metal plate attached to the sash, i.e. when the sash is closed. The type of switch selected makes or breaks the circuit when the sash is closed. Typically, the switch would be fitted so that the switch is closed when the sash is open. Connect the Sash Low Proximity Switch to the Auto Sash Control Unit (Figure 52). See the wiring schematic in section 6.10 and Figure 31. Figure 52: Sash low proximity switch wiring schedule

Figure 53: Sash Low Proximity Switch Dimensions Note: When the Auto Sash control is being retro-fitted, fix the bracket to allow for over-travel of the sash. 6.8 Sash position sensor The sash position sensor is fitted with a mounting bracket which can be fitted in four different orientations to enable the sensor draw wire to be correctly aligned. 1. Offer up the sensor to determine the best fixing position on the fume hood framework. Where possible, ensure the sensor draw wire runs straight out of the sensor housing, in line with the cable housing extension. Where the wire runs at an angle to the sensor, ensure the angle is as small as possible to prevent the wire from rubbing on any part of the sensor body, including the cable housing extension.

Figure 54: Sash position sensor 2. Mark the fixing holes on the framework and attach the sensor. The fixing bracket has two 0.37 mm (0.015") diameter fixing holes. Note: Ensure that the sensor is in a position that does not over extend the draw wire. The sensor draw wire full stroke is 1270 mm (50") maximum. 3. Attach the draw wire to either: • The sash using a suitably sized screw, the draw wire has a 9.53 mm (0.38") diameter fixing ring with a 4.85 mm (0.18") diameter fixing hole in its centre. • The sash cable using a cable tie, ensuring that the fixing ring does not run over the pulleys. • The counterweight using a cable (Figure 55).

Figure 55: Sash position sensor draw wire attached by cable tie When the sensor is fitted, manually open / close the sash to ensure that the sensor is installed correctly. 6.9 Personnel sensor The Personnel Sensor is supplied as a single transmitter / receiver unit. 6.9.1 Installing the personnel sensor 1. Use the mounting template illustrated in Figure 56 and the fixing screws provided to mount the Personnel Sensor. Mount the sensor centrally to the front of the fume hood and above the fume hood sash, use the fixing holes in the back of the sensor. See the table in Figure 56 for the correct mounting hole dimensions and locations.

A Cable Entry 10 x 20 mm (5 mm diameter cable provided) B Fixing Hole 5 mm diameter maximum C Spare Hole 10 x 20 mm D Spare Hole 10 x 20 mm E Fixing Hole 5 mm diameter maximum F Spare Fixing Hole 5 mm diameter maximum Figure 56: Personnel sensor mounting details The Personnel Sensor should be positioned so that it points straight down, with the horizontal axis of the sensor parallel to the horizontal axis of the fume hood (Figure 57). Note: Do not mount the sensor higher than 250 0mm (98”) from the laboratory floor.

Figure 57: Vertical positioning of Personnel Sensor 2. Fit the connection cable to the sensor cable inside the sensor housing. 3. Plug the 4-way terminal block into the Auto Sash Control Unit (Figure 58). See the wiring schematic in section 6.10 and Figure 31. Figure 58: Personnel sensor 4-way terminal block

6.9.2 Adjusting the personnel sensor beam width Adjust the width of the Personnel Sensor’s beam to suit different fume hood widths. To adjust the beam width: 1. Access the two potentiometers under the sensor's front cover (Figure 59). Figure 59: Personnel sensor beam width adjustment potentiometers 2. Adjust the width of the Personnel Sensor beam using the two potentiometers. This is to achieve the best field coverage in front of the fume hood for the hood's width (Figure 60).

Figure 60: Adjusting personnel sensor beam width 6.9.3 Adjusting the beam depth Adjust the sensor by tilting the bottom of the sensor towards or away from the front wall of the fume hood (Figure 61). This is to ensure that the sensors beam is at optimum angle from the fume hood, to achieve the best field of coverage for the height of the fume hood. The body of the Personnel Sensor can be tilted from 0° to 5° in three increments to achieve this.

Figure 61: Adjusting the personnel sensor beam angle away from the fume hood

6.9.4 Personnel sensor dip switch settings The following Personnel Sensor functions and parameters are controlled by Dip switches, located within the Sash Light Curtain Control Box (Figure 62) (See section 7.4.7). Figure 62: Personnel Sensor Dip Switch Settings Switches Setting Description 1 & 2 Presence timer Select the time delay before the Personnel Sensor ‘re-learns’ the background when a stationary object is detected. 2, 15, 60 or 180 second delays are selected by setting associated switches 1 and 2 to combinations of ON/OFF (Figure 62). Note: The timer will reset if any movement is detected during the time period. 3 & 4 Pattern depth Set the distance of the detection field away from the sensor.

Switches Setting Description 5 & 6 Frequency Select one of four different sensor frequencies (H; MH; M and L) if two or more sensor beam paths overlap. 7 Monitor mode Select the Monitor Mode. Set the switch to 'Normal'. Note: The 'Snow' setting is only applicable to outdoor applications and therefore is not used. 8 Self-Diagnostics Setting switch 8 to 'ON' will start a self-diagnostic test when the sensor is switched on. If the test detects a fault the LED will continually flash red and green.

6.11 Start up Make sure the Auto Sash Controller is installed before attempting to calibrate the controller. When the unit is powered up, the following events occur: The alarm performs a self-test of its functions, LEDs and audible alarm, which takes approximately 3 seconds. All inputs and outputs are deactivated during the self-test. At the end of the delay, the unit will do one of two things: • When the controller has been calibrated, it enters normal operating mode and displays the current status or alarm condition. • When the controller has not been calibrated, the monitor displays the messages: • Sash drive inhibited, if the tilt switch input is open • Auto Sash Not Configured, if the tilt switch is closed

7. Calibration 7.1 AFA4000/1 Airflow Monitor The airflow monitor must be calibrated when it is first installed, or when required during use. 1. From the Run Screen press and hold the Mute button for 5 seconds until the Main Menu is displayed. Note: When you go from the main menu to the run screen, a note briefly appears saying ‘calibration required’. 2. Use the ↑ / ↓ buttons to select Set Up Monitor, then Calibration. 3. Enter the password (the factory default password is 0-0-0-0) and press Mute to continue. 4. With the sash open to the normal operating height measure the face velocity using a calibrated anemometer. Use the ↑ / ↓ buttons to enter the measured face velocity then press Mute. The monitor samples the airflow for 5 seconds. 5. If the sample is accepted, lower the sash by half and measure the face velocity using a calibrated instrument. Use the ↑ / ↓ buttons to enter the measured face velocity and press Mute. The monitor samples the airflow for 5 seconds. 6. If the calibration is successful, the monitor returns to the Main Menu. Select Run to go to normal operating mode and check the velocity reading is accurate and stable. 7. If the calibration is stable and accurate, press and hold the Mute button for 5 seconds until the Main Menu is displayed. 8. Select Run to go to normal operating mode. 7.1.1 Possible messages Message Reason Actions Deviations too high Airflow sample is unstable. Follow the instructions to repeat the sample or quit the calibration.

Message Reason Actions Increase higher airflow sample Second sample value is too close to the first sample value. Close the sash slightly and repeat the higher sample. The minimum difference between the samples that the controller will accept is 0.3m/sec (60fpm). Sensor diff too low The monitor does not detect any difference in the sensor output between the 2 airflow samples. Check that the sensor hose is connected and repeat the calibration. 7.1.2 Calibration notes • Make sure the sensor hose is connected correctly at the side wall and rear of the sensor. • Make sure the extraction fan is running and the fume cupboard is balanced before calibrating the monitor. • Take extra time, at least 15 to 20 seconds, to wait for the airflow to settle before capturing the airflow samples. This will minimize the chance of a calibration error due to turbulence or fluctuations. • Avoid movement in front of the fume cupboard whilst calibrating the monitor. • The Low and High air samples must be at least 0.3 m/sec (60 fpm) apart to calibrate the monitor. This is to avoid inaccuracy in the calibration due to insufficient difference between the samples. The minimum difference can be changed in the Low High diff parameter in the Cal Config menu. • Do not use fully open and fully closed sash positions for the calibration points. The recommended positions are normal operating height (for example, 500 mm 20”) for the first sample and approximately half the sash opening (for example, 250 mm 10”) for the second sample.

7.2 Auto Sash Controller 1, 2 or 3 position. This section describes the calibration of the Auto Sash Controller from the AFA4000/1/AS. Note: Refer to section 7.4 to calibrate the Auto Sash Controller from the Auto Sash keypad 1. From the Run Screen press and hold the Mute button for 5 seconds until the Main Menu is displayed. Note: When you go from the main menu to the run screen, a note briefly appears saying ‘calibration required’. 2. Use the ↑ / ↓ buttons to select Set Up Auto Sash. The display shows the message TEL SASH CLOSER. 3. Press the Mute button to display the current Hardware and Software version, for example, 1. HW2.0 FW1.1. 4. Press the ↓ button to scroll down and select Setup Menu and press Mute. 5. Enter the password (the factory default password is 1-0-0-1) and press Mute to continue. 6. In the Setup menu the controller displays System Profile. 7. Use the ↓ button to scroll through the menu, select Sash 1 Settings and press Mute. 8. In the S1 Settings menu, the display will show 1. S1 Enabled and on-screen instructions. 9. Set the sash to the centre opening, for example, 250 mm. 10. Press the ↓ button to find which arrow represents the sash closing and press Mute. This step shows the controller which direction the motor needs to drive to close the sash. 11. Close the sash and press Mute. This step sets the sash position sensor output, 0 V position. 12. Fully open the sash and press Mute. This step sets the sash position sensor output, 10 V position. 13. Set the sash to the lower position, for example, close and press Mute. 14. Set the positions as required:

For 1 position operation: When only the lower position is required (for example, close only), press ↑ / ↓ together to quit. For 2 position operation: Set the sash to the normal working height (for example, 500 mm) and press Mute. Press ↑ / ↓ together to quit, when only 2 positions (lower and middle) are required. For 3 position operation: Set the sash to the full opening height (for example, 750 mm) and press Mute. The lower, middle and top positions are now calibrated. Press Mute to quit calibration mode. 15. Use the ↓ button and select Back to Set up menu, then press Mute. 16. Use the ↓ button and select Exit and Save Changes, then press Mute. 17. The controller now enters Run mode. 7.2.1 Calibration notes The sash may slightly over-run past the calibration points, when the sash motor drive is set to a fast speed. When calibrating the sash positions, allow a margin for the sash to over-travel past the calibration height. For example, before calibrating the lower position, fully close the sash and then open it by 5 mm, or before calibrating the middle position, open the sash to the normal height and then lower it by 5 mm.

7.3 Sash lock function This section describes the calibration of the Auto Sash Controller from the AFA4000/1/AS. Note: Refer to section 7.4 to calibrate the Auto Sash Controller from the Auto Sash keypad. 1. From the Run Screen press and hold the Mute button for 5 seconds until the Main Menu is displayed. Note: When you go from the main menu to the run screen, a note briefly appears saying ‘calibration required’. 2. Use the ↑ / ↓ buttons to select Set Up Auto Sash. The display shows the message TEL SASH CLOSER. 3. Press the Mute button to display the current Hardware and Software version, for example, 1. HW2.0 FW1.1. 4. Press the ↓ button to scroll down and select Setup Menu and press Mute. 5. Enter the password (the factory default password is 1-0-0-1) and press Mute. 6. In the Setup menu the controller will display the message System Profile. 7. Use the ↓ button to scroll through the menu and select Sash 1 Settings, then press Mute. 8. In the S1 Settings menu the display will show 1. S1 Enabled. 9. Use the ↓ button to scroll through the menu and select 11. S1 Auto Lock. Press Mute. 10. Set to Enabled and press Mute. 11. Use the ↓ button to scroll through the menu and select 11b. S1 Lock Alarm. Press Mute. 12. Use the ↑ / ↓ buttons to set the required alarm delay time. Press Mute. 13. Use the ↓ button to scroll through the menu and select 11c. S1 Lock Pos Calibration. Press Mute. 14. The display will show on-screen instructions. 15. Open the sash to the Lock position and press Mute. When the selected position is too low, for example, it is lower than the calibrated Lower, Middle or Top positions, the message Bad position - try again displays.

If the chosen position is OK, the lock position will be set. 16. Use the ↓ button and select Back to Set up menu. Press Mute. 17. Use the ↓ button and select Exit and Save Changes. Press Mute. The controller now enters Run mode. 7.4 Auto Sash Controller – stand-alone This section refers to when the Auto Sash Controller is used without the AF4000/1/AS Airflow Monitor. Before starting up the Auto Sash Controller, ensure that all Auto Sash Control System components have been correctly installed and connected. Note: Check that the fume hood sash and associated motor drives, pulleys, operating cables, racks and chains move freely over their entire operating ranges. Note: Check that all cables are secured away from moving components and are not overstressed or damaged. Note: Check the security of all electrical connections.

7.4.1 Starting up the Auto Sash Control Unit Press the Power Up/Menu Entry button to start the Auto Sash Controller (Figure 63 and Figure 64). Figure 63: UK / EU keypad Figure 64: US keypad 1. Switch on the Auto Sash Control Unit. When powering up, the Auto Sash Control Unit performs a self-test of its functions, LEDs and the audible alarm. This self-test takes approximately 3 seconds. During the self-test period, all inputs and outputs are de-activated. 2. At the end of the self-test, the Auto Sash Control Unit will do one of two things: If the Auto Sash Control Unit has previously been calibrated: • The Auto Sash Controller enters the Normal Operating Mode and displays its current status or alarm condition. If the Auto Sash Control Unit has not been calibrated: • When the Tilt Switch input is open, the display shows 'Sash Drive Inhibited'. • When the Tilt Switch input is closed, the display shows ‘Auto Sash Not Configured'. 7.4.2 Calibrating the Auto Sash Control Unit for Tiptronic operation using the Auto Sash keypad The Auto Sash Control Unit must have each of its required stationary positions defined for Tiptronic functionality:

1. Press and hold the Enter button for approximately 5 seconds or until the main menu appears. The LCD display will show the current hardware and software versions. For example, 1. HW2.0 FW1.1. 2. Press ↓ and select 2. Setup. 3. Press Enter. 4. Enter the Password using the ↑ arrow and Enter button, the factory default is 1 0 0 1. In the Set-Up menu, the controller will display Keypad Tones. 5. Press ↓ and select Sash 1 Settings. 6. Press Enter. In the S1 (Sash 1) Settings menu, the display will show 1. S1 Enabled. 7. Press ↓ and select 8. S1 Calibration. 8. Press Enter. The display will show on screen instructions. For example: "Manually move sash to centre and then press the Up/Down keys to find sash down direction. Press Cancel to abort Calibration" 9. Move the sash to the middle of the sash opening. 10. Press ↑/↓ buttons to determine which arrow activates sash closing. 11. Press the ↑/↓ button which closes the sash, press Enter. This instructs the controller which direction the motor needs to turn to close the sash. 12. Move the sash to the lowest position required, press Enter. 13. Either: • Press Mute, if this is the only pre-set position required, or • Set the sash to the normal working height, for example 500 mm. 14. Press Enter, for two position operation. 15. Either: • Press Mute, if only two pre-set positions (‘lowest’ and ‘normal’) are required. • Set the sash to the full opening height. 16. Press Enter, for three position operation. The lowest, normal and fully open positions are now calibrated. 17. Press Enter, to exit Calibration mode.

18. Press ↓ button, select Back to Set up menu. 19. Press Enter. 20. Press ↓ button, select Exit and Save Changes. 21. Press Enter. The Controller will now enter Run mode. Note: When the Auto Sash motor drive is set to a high speed, allow a margin for the sash to over-run when calibrating the sash position. See the instructions above. Allow a 5 mm (0.197") margin at the highest and lowest point. 7.4.3 Calibrating the sash lock function To define the required Sash Lock position: 1. Press and hold the Enter button for 5 seconds until the Main Menu is displayed. 2. The current Hardware and Software versions are displayed, for example 1. HW2.0 FW1.1 3. Press ↓ button, select 2. Setup and press Enter. 4. Enter the Password using the ↑ arrow and Enter button, the factory default is 1 0 0 1. In the Set-Up menu, the controller will display Keypad Tones. 5. Press ↓ button, select Sash 1 Settings and press Enter. The controller will display 1. S1 Enabled. 6. Press ↓ button, select 11. S1 Auto Lock and press Enter. 7. Set to Enabled and press Enter. 8. Press ↓ button, select 11b. S1 Lock Alarm and press Enter. 9. Press ↑/↓ buttons to set the required alarm delay time and press Enter. 10. Press ↓ button, select 11c. S1 Lock Pos Calibration and press Enter. Instructions will be displayed, for example: Lock the sash then move the sash to the lowest lock position. Enter to accept. Cancel to abort 11. Open the sash to the Lock position and press Enter. If the position chosen is too low, lower than the calibrated Bottom, Middle or Top positions, Bad position - try again will be displayed. If the chosen position is acceptable, the lock position will be set. 12. Press ↓ button, select Back to Set up menu and press Enter. 13. Press ↓ button, select Exit and Save Changes and press Enter.

The Auto Sash Controller will now go to RUN mode. 7.4.4 Calibrating the safety light curtain To adjust the range and sensitivity of the Safety Light Curtain: 1. Ensure the area between the Safety Light Curtain transmitter and receiver is free from obstructions. 2. Ensure the light beam paths are not broken and the Personnel Sensor is disabled so that the sash does not Auto-Close whilst the Safety Light Curtain is being calibrated. Note: If it is not possible to disable the Personnel Sensor, remove the motor / clutch connector from the Auto Sash Control Unit. This activates the Sash Control Alarm after the selected time delay and the reset button must be pressed once the Safety Light Curtain has been calibrated. 3. Remove the cover from the Safety Light Curtain Control Box.

Figure 65: Safety Light Curtain Control Box with lid removed 4. Power up the Auto Sash Control Unit. 5. Check that the Safety Light Curtain Transmitter and Receiver are connected correctly and are operational. The red Power On LED will now be visible on the receiver (Figure 66).

Figure 66: Red Power On LED 6. Ensure that Switch 1 (sw1), see Figure 54, is set to the correct range: Fume Hood Size Sash Beam Range sw1 Setting 0 to 10’ (up to 3000mm) Short Off 10’ to 16’ (3000 to 5000mm) Long On 7. Ensure that Switch 2 (sw2) (Figure 65) is set to Off (Operation Mode). 8. Ensure that Switch 3 (sw3) is set to On (Normal Operation). 9. Set Switch 4 (sw4) to On. A buzzer will then sound when the beam is broken, this aids the setting up of the beam. The signal LED indicates beam status: • Green if the detection area is clear. • Red if the area is not clear. 10. Turn the gain potentiometer anti-clockwise, to the minimum. The transmitter and receiver can no longer sense each other. 11. Slowly adjust the gain potentiometer (Figure 65) clockwise (to maximum) until the transmitter and receiver can sense each other, for example, the receiver can detect the beam sent from the transmitter. 12. Set sw3 to Off to store the settings. 13. Turn the gain potentiometer approximately 5 degrees clockwise to ensure sufficient gain. 14. Use a glass object to test whether it breaks the beam. Do this across the entire open face of the fume hood.