Table 3-1. Direct Support Troubleshooting- continued
TEST OR INSPECTION
REVERSE OSMOSIS (R.O.) 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.
Step 6. Shut down power source and perform a continuity check of power circuit as follows; make additional
point-to-point checks as necessary to find defective component:
To check continuity through K1, it is necessary to physically push up relay plunger while
making the check.
J1, A - J6(A)
J1, B - J6(B)
J1, C - J6(C)
If continuity is absent through heater assembly, replace heaters (Paragraph 3-61) and reset heater
If continuity is absent through CB1, replace CB1. Refer to Paragraph 3-53.
If continuity is absent through relay K1 (see above note) replace motor starter.
Refer to Paragraph 3-61.
If continuity is absent through wires, tighten loose connections or replace defective wire.