TM 10-4610-240-24
TM 08580C-24/2
TO 40W4-13-22
Table 3-1. Direct Support Troubleshooting - continued
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
REVERSE OSMOSIS (R.O.) PUMP ASSEMBLY - continued
2.
REVERSE OSMOSIS (R.O.) PUMP CIRCUIT BREAKER (CBI) AND/OR OVERLOAD HEATERS TRIP.
WARNING
High voltages in this equipment can cause serious injury or death. When applying power during a
test, take proper measures to ensure personal safety. Never work on electrical equipment unless
there is another person nearby who is familiar with the operation and hazards of the equipment
and who is competent in administering first aid.
Step 1.
Remove power at power source, reset CB1 and disconnect wires on CBI output terminals (T1 , T2 and
T3).
Step 2.
Turn on power.
If circuit breaker trips, check for bare or disconnected wires between power source and CBI and repair
or replace it. If trouble persists, replace CB1 Refer to paragraph 3-49.
Step 3.
Remove power at power source, reconnect wires to circuit breaker and disconnect wires from heater
assembly at T1, T2 and T3.
Step 4.
Turn on power.
If heater assembly trips, check for defective heaters and replace as necessary (para 3-49). If trouble
persists, replace motor starter.
Step 5.
Remove power at power source and reconnect wires to heater assembly.
Step 6.
Check motor power cable for continuity and shorts.
a.
If shorted or open, repair power cable assembly. Refer to paragraph 3-21.
b.
If cable assembly is not defective, repair pump motor Refer to paragraph 3-38.
3-44
