TM 10-3610-203-14
Table 5-1. Troubleshooting
Malfunction
Test or Inspection
Corrective Action
SHELTER SYSTEM AND COMPONENTS
1. AIR CONDITIONING UNIT DOES NOT HEAT
Step 1.
Inspect air conditioner control box function switch as follows:
a.
Position the AIR CONDITIONER circuit breaker to off.
b.
Disconnect the electrical cable which extends between the control box and the air conditioner
at the air conditioner connector.
c.
Remove the cable clamps which secure the control box cable to the shelter wall
d.
Remove the screws and lockwashers which attach the control box to the shelter wall and re-
move the box complete with cable.
CAUTION
Extreme care must be exercised while
performing maintenance on hu-
midistats and/or thermostats. They
are designed to operate within a very
small change in temperature and will
easily become maladjusted.
e.
Check the function switch to ensure correct control operation and smooth rotation to each
switch position.
If necessary, repair or replace as described in paragraph 12-3.
Step 2.
Test for defective heating elements as described in paragraph 12.1. Replace defective elements as
necessary in accordance with procedures described in paragraph 12-1.
2. BLACKOUT WARNING BUZZER WILL NOT ACTIVATE WHEN SWITCH DEPRESSED
Step 1.
Inspect main power service box for correct positioning of BLACKOUT BUZZER circuit breaker. Position
BLACKOUT BUZZER circuit breaker to on.
Step 2.
Inspect for correct electrical connection at buzzer as follows:
a.
Position BLACKOUT BUZZER circuit breaker in main power service box to on.
b.
Remove the screws that attach the buzzer cover to the base and remove the cover.
c.
Using a suitable meter or test light, check for continuity at wire connections when blackout
warning switch is depressed.
If necessary, replace defective buzzer as described in paragraph 13-2.
Step 3.
Inspect for correct electrical connection at BLACKOUT WARNING switch as follows:
a.
Remove three nuts, lockwashers and bolts that secure the cover to the housing. Loosen the
fourth nut and allow the cover to swing down.
b.
Using a suitable meter or test light, check for continuity at wire connections when blackout
warning switch is activated. If necessary, replace defective switch as described in paragraph 13-2.
5-2
