Table 5-1. DIRECT SUPPORT TROUBLESHOOTING

TM 5-3610-254-14

Table 5-1. DIRECT SUPPORT TROUBLESHOOTING (cont)

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

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.

CAUTION

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.

Step 2.

Test for defective heating elements. Replace defective elements as necessary.

BLACKOUT WARNING BUZZER WILL NOT ACTIVATE WHEN SWITCH IS 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:

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 blackout

warning switch is depressed.

Repair or replace defective buzzer as described in paragraph 5-22..

5-3