Table 3-1. Direct Support Troubleshooting - continued
TEST OR INSPECTION
BACKWASH 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 personal safety Never work on electrical equipment unless there
is another person nearby who is familiar with the operation and hazards of the equipment and who is
competent in administering first aid.
Step 6. Check pump cable for continuity.
a. If cable is defective, repair cable assembly. Refer to paragraph 3-4.
Step 7. Check for continuity through control circuit; make additional point-to-point continuity checks as required to
isolate fault to a specific component
To check continuity through K2 contacts, it is necessary to close contacts by holding handle on side of
relay to the UP position.
L3, CB1 or J10(C)
TB-5 (Timer) -
K1(A2) (Required value is 90-120 ohms)