Nortel DMS-100 Series Maintenance Manual page 669

Low temperature alarms testing in an OPM
At the OPM cabinet
1 To select and activate one high temperature alarm, blow coolant (like Freon)
on the low temperature sensor. Locate the low temperature alarm sensors in
the following drawing.
High
Fuse
temperature
panels
alarm
HIE
ECU
BAY 0
Low temperature
heater switch
Bay locking
knobs
B
LCA
C
C
Empty
or
LCA-0
Bay locking
Low temperature
knobs
heater switch
DMS-100 Family OPM Maintenance Manual XPM14 and up
OPM routine maintenance procedures
Low temperature alarms testing
Doors
High
switch
temperature
alarm
B
C
Rectifiers
C
and PCU
FSP
RMM
ECU
BAY 1
Damper
control
sensors
13-67
OPM
(continued)
Low temperature
alarm sensors (each
ECU)