TM 10-4610-241-24
TO 40W4-13-42
Table2-2. Unit Troubleshooting - continued
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
R.O. PUMP ASSEMBLY - continued
WARNING
High voltages in this equipment can cause serious injury or death. When applying power
during a test, take proper measures to ensure safety of personnel. Never work on
electrical equipment unless there is another person nearby who is familiar with the
operation and hazards of the equipment.
Step 3. Turn CB1 to OFF and disconnect R.O. motor cable assembly from back of junction box at R.O. pump
powerjack, J6.
Step 4. Turn CB1 to ON and check for 208 VAC three phase power at J6.
If 208 VAC is not measured in all three tests (A-B, A-C and B-C), notify Direct Support Maintenance.
Step 5. Disconnect cable assembly at pump motor (Paragraph 2-54) and check cable for continuity.
a.
If cable assembly is defective (open), replace it. Refer to paragraph 2-54.
b.
If cable assembly is not defective, notify Direct Support Maintenance.
Step 6. Shut down power at generator and check for shorts between pins A - B, A - C and B - C and from N to A,
B, and C in turn on J6.
If continuity is measured, indicating a short, notify Direct Support Maintenance.
Step 7. Disconnect cable assembly at pump motor (Paragraph 2-54) and check cable assembly for shorts.
a.
If shorted, replace cable assembly. Refer to paragraph 2-54.
b.
If cable assembly is not defective, notify Direct Support Maintenance.
4.
PUMP MOTOR OVERHEATS.
WARNING
High voltages in this equipment can cause serious injury or death. When applying power
during a test, take proper measures to ensure safety of personnel. Never work on
electrical equipment unless there is another person nearby who is familiar with the
operation and hazards of the equipment.
2-34
