TM 5-3610-287-24
Organizational Troubleshooting (Cont)
Table 2-3.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
5. AIR CONDITIONER/HEATER DOES NOT COOL.
Check air conditioner/heater controls for proper settings.
Set air conditioner/heater controls to proper settings.
If malfunction still exists, troubleshoot air conditioner/
heater unit in accordance with TM 5-4120-367-14.
6. MAIN/PUMP DOES NOT OPERATE.
Check that WATER PUMP switch and circuit breaker are on.
Step 1.
Set WATER PUMP switch and WATER PUMP/HEATER circuit
breaker to ON.
WARNING
HIGH VOLTAGE. When working on high voltage
components, always have an additional person
present. Keep one hand away from equipment to
reduce hazard of current flowing through vital
organs of body. Remove all jewelry from
fingers, wrists, and neck before working on
electrical components. Failure to observe this
warning may result in death or serious burns.
Step 2. Set WATER PUMP/HEATER circuit breaker to OFF. Remove cover
plate on water pump wiring junction box under sink. Set
WATER PUMP/HEATER circuit breaker to ON. Test voltage
across input wires to junction box. Reading should be 110
10 Vat.
If reading is O Vat, troubleshoot ON/OFF switch
(malfunction 19).
If reading is less than 100 Vat, check voltage at power
monitor assembly and adjust generator voltage output.
Step 3. Set WATER PUMP/HEATER circuit breaker to OFF. Disconnect
pressure switch wire leading to main pump. Set WATER PUMP/
HEATER circuit breaker to ON. Test voltage between
disconnected pressure switch wire and ground. Reading
should be 110 10 Vat. Open faucet handle. Reading should
be 0 Vac.
If readings are correct, replace main pump (para 2-43).
