MEDC DB1 P UL Technical Manual
Text of the manual
Technical Manual for the
Horn – DB1P UL
DB1HP UL
Please note that every care has been taken to ensure the accuracy of our
technical manual. We do not, however, accept responsibility for damage,
loss or expense resulting from any error or omission. We reserve the right
to make alterations in line with technical advances and industry standards.
© MEDC 2003
© MEDC 2003
1.
INTRODUCTION
These horn units have been designed for use in harsh environmental conditions.
2.
INSTALLATION
General
When installing and operating explosion-protected electrical equipment, require-
ments for selection, installation and operation should be referred to eg. IEC
60079-14 worldwide and the ‘National Electrical Code’ in No
© MEDC 2003
06/01
GENERAL ARRANGEMENT
2 - HOLES 5/16" / 8mm DIA
5 1/2" / 140mm FIXING CRS
3 1/8" / 79mm
6 7/8" / 175mm DIA
3 1/8" / 79mm
5 1/2" / 140mm FIXING CRS
6 3/4" / 171mm DIA
6 5/8" (81/2") / 168mm (216mm)
4 1/8" (6") / 105mm (152mm)
1 3/
16"
30mm
ALL DIMENSIONS IN INCHES AND MILLIMETERS
© MEDC 2003
SWITCH
TONE
Nom O/P
TONE FREQ/DESCRIPTION
SETTING
DESCRIPTION
(dB(A)
12345
@1M)
1
Alt Tones 800/970 Hz at 1/4 sec
11111
114
2
Sweeping 800/970 Hz at 7Hz
11110
Fast Sweep(LF)
114
3
Sweeping 800/970 Hz at 1 Hz
11101
Med Sweep(LF)
114
4
Continuous at 2850 Hz
11100
109
5
Sweeping 2400-2850 Hz at 7 Hz
11011
Fast Sweep
114
6
Sweeping 2400-2850 H
3.1 The unit is initiated directly from the power source.
The DB1P & DB1HP units include two 5-way DIL switches to select any two
tones from the list. Use SW2 to select tone 1 & SW1 to select tone 2.
3.2 Single Stage Alarm (d.c. version only)
To operate as a single stage alarm, set the appropriate tone using SW1 and
connect input wires to TB1 (
