TM 10-4610-239-24
TM 08580B-24/3
Table 3-1. Direct Support Troubleshooting - Continued
Malfunction
Test or Inspection
Corrective Action
CHEMICAL FEED METERING PUMP ASSEMBLY - Continued
PUMP ELECTRIC MOTOR FAILS TO START WHEN CHEMICAL FEED PUMP SWITCH IS
SET TO START - Continued
If measurement does not indicate continuity, repair wire lead W29.
Refer to paragraph 3-39.
Step 12.
Check continuity between CB7 and terminals L and T.
If measurement indicates continuity, repair wiring harness W39. Refer to
If measurement does not indicate continuity, replace CB7. Refer to paragraph 3-43.
REVERSE OSMOSIS ASSEMBLY
1. PUMP ELECTRIC MOTOR FAILS TO START WHEN R.O. PUMP SWITCH IS SET TO START
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, 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, go to step 10.
3-39
