Table 3-1. Direct Support Troubleshooting-continued
TEST OR INSPECTION
RAW WATER PUMP ASSEMBLY NO. 1 - continued
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.
Disconnect cable assembly at pump motor (Paragraph 2- 19) and check it for continuity.
If open, repair pump cable assembly. Refer to Paragraph 3-11.
If pump cable assembly is not open repair centrifugal pump. Refer to Paragraph 3-12.
Disconnect power at power source and check for continuity through control circuit as follows. Make
additional point-to-point continuity checks as necessary to find faulty component:
To measure continuity through K3 it is necessary to close K3 by physically pushing relay
J(C) and (D)
K3(A2) (See above note)
K3(A2) (90-120 ohms)
K3(A1) (Models WPES-20 and H-9518-2)
If switch S13 or S3 is open (switches ON) replace it. Refer to Paragraph 3-49.
If continuity does not exist through CB9 (CB9 ON), replace CB9. Refer to Paragraph 3-53.
If cable assembly, W52 is open, repair cable assembly. Refer to Paragraph 3-27.
3-68 Change 1