TM 10-4610-215-24
TM 08580A-24/2
Table 2-3. Troubleshooting (ROWPU) CONTINUED
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
PUMP/MOTORS – continued
Step 3. Test pump motor for proper operation.
If circuit breaker trips, perform continuity and short tests in accordance with item 1, table 2-3.
3. PUMP MOTOR BURNED OUT.
Step 1.
Remove main power cable to junction box.
Step 2.
Remove conduit box cover and from inside conduit box of pump motor disconnect cable wires
from motor leads. (Refer to schematic, figure 1-12.)
Step 3. Check motor leads for continuity.
a. If short or open is found, replace pump/motor assembly.
b. Reconnect cable leads and replace conduit box cover.
Step 4.
Perform operational tests.
4. INDICATOR LAMP GOES O FF BUT MACHINERY CONTINUES TO WORK NORMALLY.
Step 1.
Remove lens cover and check bulb for loose contact, If necessary, use lamp puller to tighten
the lamp.
Step 2. Using lamp puller, remove bulb and check for burned out filament. Replace bulb and lamp cover.
Step 3.
If new bulb fails to function, refer to next higher level of maintenance.
5. TOGG LE SWITCH DOES NOT WORK.
Step 1.
Remove main power cable to junction box.
Step 2.
Remove back cover of the control box.
Step 3. Check for loose or broken connections and broken or frayed wires and shorts.
Step 4.
Remove all wires from switch terminals.
Step 5.
Using the multimeter, check all positions of switch for continuity or shorts at switch terminals.
(Refer to schematic, figure 1-12.)
If open or short is found, replace switch.
Step 6.
Perform continuity and short test from switch terminals to all functional components in this circuit.
Repair or replace all damaged connections and wires.
Step 7.
Replace cover, reconnect power, and perform operational tests.
2-17
