Thermo 1284 Operating And Maintenance Manual

Forma Class II, A2 Biological Safety Cabinets Operating and Maintenance Manual Manual No: 7021284 Rev. 1 ...

i Read This Instruction Manual. Failure to read, understand and follow the instructions in this manual may result in damage to the unit, injury to operat- ing personnel, and poor equipment performance. CAUTION! All internal adjustments and maintenance must be performed by qualified service personnel. Refer to the serial tag on the back of this manual. ...

ii Alerts the user to important operating and/or maintenance instructions. May be used alone or with other safety sym- bols. Read the accompanying text carefully. Potential electrical hazards. Only qualified persons should perform the instructions and procedures associated with this symbol. Hazard. Do not touch. Instructions associated with this ...

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iv Table of Contents Section 1 - Receiving . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 - 1 1.1 Unpacking List . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 - 1 Section 2 - Introduction . . . . . . . . . . . . . . . . . . . . . . . . . .2 - 1 2.1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . ...

1.1 Unpacking List Included with the installation/operation manual are four identification index buttons. These buttons may be used to iden- tify the type of service supplied to the service valves. Also included in a separate bag is the drain valve. Attached to the valve is a small Allen wrench used for calibrating the Static Pressure Gauge. This Allen wrench should be kept with the manual at all times. Section 2 - Introduction 2.1 ...

3.1 Location Locate the cabinet on a firm, level surface in an area of minimum temperature changes. The cabinet should be placed away from disruptive air currents caused by excessive person- nel traffic, air-conditioning or heating ductwork, or laboratory windows and doors. Proper cabinet location is important, as drafts disrupt critical airflow characteristics and allow room contaminants to enter or escape the cabinet work area. ...

3 - 2 3.4 Exhaust Requirements Filtered air from the cabinet may be exhausted directly into the room or vented to the outside through an external exhaust system. Consult a biological safety officer or other qualified individual for cabinet-type exhaust requirements. Refer to NSF Standard, NSF 49-2002, Annex E. a. Direct Room Exhaust A cardb ...

3 - 3 INPUT FOR AIR OR VACUUM AIR OR VACUUM INPUT Back of BSC Front of BSC Figure 3-2 ...

3 - 4 Figure 3-3 ...

Section 4 - Certification Testing Service and certification must be performed by qualified personnel. 4.1 Locating a Certification Company Biological safety cabinet certification consists of a series of tests designed to verify that the cabinet is performing within operating parameters established by the manufacturer. To assure that a biologic ...

5.1 Control / Indicating Devices (Figures 5-1, 5-2, 5-3) Before operating the cabinet, become familiar with the fol- lowing items: Blower Switch- The blower switch controls power to the inter- nal blower. Light Switch- The “Lights” switch controls power to the fluo- rescent lamp or the optional ultraviolet lamp. Both lamps are located in the work area. Ultra-Violet Light - Optional On cabinets equipped with ultra violet lights, ...

Blower Motor/Lights Reset Button (15 Amp) - The Reset but- ton (located on the left side of the control panel, directly above the Receptacle fuses) is an in-line circuit breaker for the internal blower motor and lighting. If an overload occurs, the circuit breaker will trip and the button will protrude from the panel. Depress the button to reset the circuit breaker. Note: • Turn power off ...

Section 6 - General Cautions and Cleaning 6.1 Caution Notes • Following initial installation, the unit must be thoroughly tested and certified. • All activities to be performed within the cabinet should be approved by a biological safety officer or other qualified individual. • Since the HEPA filters remove particulates only (not ga ...

8 - 1 Section 8 - Troubleshooting 8.1 Troubleshooting Guide The following is a guide to troubleshooting the system. If a contaminated area of the cabinet must be entered to determine and/or resolve the source of a particular problem, the cabinet must first be decontaminated. Servicing of the unit must be performed by quali- fied service perso ...

Section 9 - Routine Maintenance Before any maintenance work is performed in the biological safety cabinet, the unit must first be decontaminated. 9.1 Checking the Static Pressure Gauge “Zero” Note: In order to provide an accurate reading, the indicating needle of the static pressure gauge should be precisely at zero when the cabinet is sh ...

order for the proper airflow balance to be maintained, adjust it as follows: 1. The damper control (Figure 9-3) is located on the top of the cabinet. 2. Loosen the wingnut, move the lever to the desired position and retighten the wingnut. Copies of the factory airflow test sheets are available in the Specifications section. 9.4 Biological Safety Cabinet Test Grids a. 4-foot Series, Models 1284 and ...

Live voltage is present on the control terminals of the switches and dials on the front of the blow- er panel. Avoid touching these controls when reaching into the control panel and making any adjustments. Blower Speed Control - The blower speed control is accessed from the rear of the control panel by removing the thumbscrew on the exterior top and screw located at the bottom front of the control panel. Swing the control panel door ope ...

Service to the unit must be performed by qualified personnel. Recertify the cabinet after servicing. Before service is to be performed on the cabinet, the unit must be decontaminated! 10.1 Replacing Blower Motor a. Reversing the motor wiring (4 ft. models only) 1. On the replacement motor: Disconnect the faston con- nectors securing the Orange wire to the Brown wire and Yellow wire to the Purple wire. 2. Reconnect the Orange wire to ...

10 -2 10. Release the two latches securing the supply plenum to the blower housing. 11. Disconnect the vinyl tubing that connects the Mag gauge to the plenum. 12. Remove the hex nuts (4 on the four-foot models, 6 on the six-foot models), springs, washers and hold-down brackets securing the plenum. 13. Remove the front filter hold-down studs (2 o ...