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 8
Refer to schematic diagram figure FO-3. Check for 208 V ac at K1 between terminal
pairs T1 and T2, T2 and T3, and T1 and T3.
If 208 V ac is not present on all terminal pairs, go to step 9.
If 208 V ac is present on all terminal pairs, go to step 15.
Step 9.
Refer to schematic diagram figure FO-3. Check for 208 V ac at K1 between terminals
pairs on the top screw of each heater; left to center,center to right, and left to right.
If 208 V ac is not present on all terminal pairs, go to step 14.
If 208 V ac is present on all terminal pairs, shut down ROWPU. Refer to TM
10-4610-239-10. Shut down power. Refer to generator manual. Remove six
screws and three heaters. Replace heaters that have damaged elements. Start
ROWPU. Refer to TM 10-4610-239-10.
Repeat step 8.
If 208 V ac is not present on all terminal pairs after repeating step 8, go to step 10.
If 208 V ac is present on all terminal pairs after repeating step 8, the malfunction
caused by faulty heater elements has be corrected.
Step 10.
Shut down ROWPU. Refer to TM 10-4610-239-10. Shut down power. Refer to generator
manual. Refer to schematic diagram figure FO-3. Check for short circuits between junction
box ground terminal El and K1 terminals T1, T2, and T3.
If any K1 terminal is shorted to ground terminal El, go to step 11. If no K1 terminal is shorted
to ground terminal El, replace K1. Refer to paragraph 3-46.
Step 11.
Disconnect R.O. pump cable connector P6 from ROWPU. Refer to schematic diagram
figure FO-3.Check for short circuits between P6-D and P6-A, P6-B, and P6-C.
If no pin is shorted to P6-D, go to step 12.
If any pin is shorted to P6-D, go to step 13.
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