TM 10-6665-297-13&P
2-7
WARNING AND ALARM MODIFICATIONS (continued)
and circuitry for the manual resetting of warning and alarm circuit relays that have been energized in
response to emergency gas conditions or tests. Further, WARN or ALARM light circuits operate to turn
on the lights in response to emergency conditions whether the relay will operate or not. These modes
of operation assure that attention will be directed to the exact location of an emergency condition and
that a visual indication of an emergency will appear on the module front panel even if a warning or
alarm delay should fail.
For installations where other modes of operation have special advantages, on-site modification of
control module circuitry can provide the following optional modes:
-
Manual resetting of warning and alarm relays by means of one switch common to several modules.
-
Automatic resetting for both warning and alarm relays.
-
Automatic resetting for either warning or alarm relays.
-
Warning and alarm relays not energized during TEST (to prevent activation of external devices such as
sprinkler systems, process control mechanisms, etc.
Instructions for each of the above modifications appear in the following paragraphs. (Refer to Figures
2-26, 2-27, and 2-28.)
2-7.1
MODIFICATION FOR COMMON POINT RESETTING OF CD830 MODULES : To modify warning and
alarm circuits of two or more CD830 modules for manual resetting from a common point:
1.
Remove each module from enclosure or housing. CD80OOW and CD802W: unlatch and swing
front panel to open position.
2.
Using small wire cutters, cut white/gray wire connected to pin 1 of CD800/830 alarm light socket or
white/black wire at pin 2 of CD802/832 alarm light socket. Tape cut end of wire to avoid short
circuits.
3.
Grasp red ALARM/RESET lens with fingers and pull to extract from module front panel.
23-9617
5/15/78
2-39
