Table 3-1. Direct Support Troubleshooting-continued
TEST OR INSPECTION
BOOSTER PUMP ASSEMBLY - 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,
Shut down power source and disconnect booster pump cable assembly. Check if continuity exists through
pump cable assembly (Paragraph 3-34).
If continuity exists, repair centrifugal pump. Refer to Paragraph 3-37.
If continuity does not exist, repair pump cable assembly, Refer to Paragraph 3-34.
Check for continuity/resistance of control circuits as follows. Make additional point-to-point checks as
necessary to isolate fault to a specific component:
To measure continuity thru K6 contacts it is necessary to physically close contacts by
pushing in on relay plunger.
J9(I) and (J)
K6(A2) (See above note)
K6(Al) (Required value is 450-600 ohms)
K6(Al) Models WPES-20 and H-9518-2 only
If continuity does not exist through switches, S13 and S6 (switches ON), replace them. Refer to
If continuity does not exist thru circuit breaker CB9 (CB9 ON), replace CB9. Refer to Paragraph
If continuity does not exist through heater assembly, replace defective heater (Paragraph 3-53) and
reset heater assembly.
3-22 Change 1