Page 510 - Med Plaza and Cancer Center

5/TROUBLESHOOTING GUIDE

Symptom Test Procedure Repair/Replace

Intermittent chirp from Check if test button is stuck. C/D board.
audio alarm
Confirm power supply operation. See above.
Check ,uP series number and use of jumper wire
(See Note, Section 6.15).
Substitute ,uP with known good unit:
If operation OK - Microprocessor
If chirp continues - C/D board.

Continuous visual alarm Remove louvered panel, check for pointer
for single gas contact with trigger point.
OR
Multiple alarms on one If in contact - Readjust setting.
or both sides of panel
If not in contact, disconnect switch gauge, and
alternately supply a short or open to connector
on C/D board.
If operation OK - Check switch gauge
wiring or replace.
If operation not OK - check continuity between
ground strap and rough-in box with ohmmeter.
If not OK - Ground strap.
If OK - check continuity between rough-in box
and switch gauge metal case.
If not OK - Repair open.
If OK - remove front panel and check continuity
through green wire at J2 and J3 from ground
strap to C/D board.
If not OK - Repair open.
If OK - C/D board.
Remote indicator not Remove J1 and check remote relay function
functioning; panel OK with ohmmeter.
including test function
If OK - Check connector and
remote wiring.
If not OK - C/D board.
Alarm fails to activate Disconnect switch gauge assembly; use
during test procedure ohmmeter to verify continuity to ground
when contact is made.

If OK - C/D board.
If not OK - Switch gauge assembly.

0178-0135-000 Rev. A 5-2