TM 10-4610-239-24
TM 08580B-24/3
Table 3-1. Direct Support Troubleshooting - Continued
Malfunction
Test or Inspection
Corrective Action
REVERSE OSMOSIS ASSEMBLY - Continued
1. PUMP ELECTRIC MOTOR FAILS TO START WHEN R.O. PUMP SWITCH IS SET TO START
- Continued
Step 21.
Check continuity between CB1 terminals, L1, L2, and L3 and terminals T1, T2,
and T3 respectively.
If all three measurements indicate continuity, repair wiring harness
W39. Refer to paragraph 3-39.
If all three measurements do no indicate continuity, replace CB 1. Refer
Step 22.
Check continuity between J1 pins A, B, and C and TB 1 terminals 1, 2, and 3
respectively.
If all three measurements indicate continuity, repair wire leads W11,
W12, and W13. Refer to paragraph 3-39.
If all three measurements do not indicate continuity, repair wiring
harness W5. Refer to paragraph 3-39.
2. PUMP ELECTRIC MOTOR FAILS TO START WHEN JOG SWITCH IS SET TO JOG.
WARNING
Electrical high voltage can cause serious injury or death. Some tests performed in
troubleshooting require power to be connected. Always take proper measures to ensure
personal safety.
NOTE
Ensure that all circuit breakers are set. Refer to figure FO-3 for schematic diagram and
figure FO-4 for interconnection diagram. Refer to figure 3-1 for control box support
diagram. Refer to figure 3-1 for control box support diagram, figure 3-2 for junction box
support diagram, and figure 3-9 for R.O. pump assembly support diagram.
Step 1.
Push overload plunger on k1. Set R.O. PUMP switch to START and release.
Check position of overload plunger.
If plunger stays in, go to step 2.
If plunger does not stay in, refer to malfunction 1, PUMP ELECTRIC
MOTOR FAILS TO START WHEN R.O. PUMP SWITCH IS SET TO
START.
3-46
