Table 5-1. Troubleshooting
TEST OR INSPECTION
SHELTER SYSTEM COMPONENTS (Con't)
2. FILM DRYER DOES NOT DRY PROCESSED FILM.
Inspect film dryer for damage and general condition.
If necessary, replace defective film dryer as described in paragraph 5-14.
3. NO HOT WATER AT FAUCET.
Inspect immersion heater as follows:
Remove cap from water heater and check switch for continuity with a multimeter.
If water heater is found defective, replace a required.
4. AIR CONDITIONING UNIT DOES NOT HEAT
Step 1. Inspect air conditioner control box function switch as follows:
Position the AIR CONDITIONER circuit breaker to off.
Disconnect the electrical cable which extends between the control box and the air conditioner at the
air conditioner connector.
Remove the cable clamps which secure the control box cable to the shelter wall.
Remove the screws and lockwashers which attach the control box to the shelter wall and remove the
box complete with cable.
Extreme care must be exercised while performing maintenance on humidistats and/or
thermostats. They are designed to operate within a very small change in temperature and will
easily become maladjusted.
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 11-3.
Step 2. Test for defective heating elements as described in paragraph 11-1. Replace defective elements as
5. BLACKOUT WARNING BUZZER WILL NOT ACTIVATE WHEN SWITCH DEPRESSED.
Step1. 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:
Position BLACKOUT BUZZER circuit breaker in main power service box to on.
Remove the screws that attach the buzzer cover to the base and remove the cover.
Using a suitable meter or test light, check for continuity at wire connections when blac kout warning
switch is depressed. If necessary, replace defective buzzer as described in paragraph 12-2.
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 12-2.