TM 10-4610-215-24
TM 08580A–24/2
Table 2-3. TROUBLESHOOTING (ROWPU) CONTINUED
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
PUMP/MOTORS – continued
8. CONTROL CIRCUIT BREAKER TRIPS AND WILL NOT RESET. OR TRIPS MORE THAN ONCE.
WARNING
ELECTRICAL HIGH VOLTAGE
Electricity can cause serious injury or death. Be certain that all
power is removed before performing maintenance on electrical
equipment.
Step 1.
Set all toggle switches on control box to OFF position. Reset all circuit breakers.
If circuit breaker will not reset, replace circuit breaker.
Step 2.
Isolate faulty circuit by turning switches to ON, one at a time for one minute.
a.
b.
c.
If circuit breaker does not trip, return switch to OFF and go to next switch.
If circuit breaker trips and is in one of the pump circuits, repair or replace in accordance
with item 1, table 2–3.
If circuit breaker for CB8 UTIL OUT trips, repair or replace in accordance with item 6,
table 2–3.
9. R.O . PUMP DRIVE BELTS ARE FRAYED AFTER SHORT U SE OR BREAK FREQ UENTLY.
CAUTION
R.O. pump drive belts must be replaced as a set. Replacement
of single belts will overstress belts and result in shortened life.
Step 1.
Check R.O. pump and pump motor pulley (sheaves) for cracks, chips, burrs, or bent grooves
which may damage belts.
a. File burrs and sharp edges, and smooth with emery cloth.
b. If damage cannot be repaired, replace sheave.
Step 2. Check sheave alignment.
If out of alignment, correct in accordance with paragraphs 2–50 and 2–77.
Step 3.
Adjust belt tension in accordance with paragraph 2–76.
10. HIGH–PRESSURE LAMP WILL NOT GO O FF.
WARNING
To avoid possible personaI injury or damage to the ROWPU
system, TURN ALL PUMPS OFF and let water pressure drop.
Step 1.
Open and close RESET switch several times.
Step 2.
Locate high–pressure switch on the rear of the control panel plate.
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