TM 10-4610-240-2A
TM 08580C-24/2
TO 40W4-13-22
Table 3-1. Direct Support Troubleshooting - continued
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
CHEMICAL FEED PUMP - continued
WARNING
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 if continuity exists through pump cable assembly
a If continuity exists, repair pump Refer to paragraph 3-34.
b If continuity does not exist, repair cable assembly Refer to paragraph 3-24.
Step 7. Check for continuity of control circuits as follows, make additional point-to-point
checks as necessary to isolate fault to a specific component.
NOTE
To measure continuity through K7 contacts, it is necessary to
physically close contacts by pushing in on relay plunger
L3, CB6 - J8(P)
J9(P) - J9(K) and(L)
P9(P) - P8(P)
P9(K)-
P8(K)
P9(L) - P8(L)
J8(K)-
K7(2)
J8(L) -
K7(3)
K7(2) - K7(A2) (see above note)
K7(A1) - K7(A2) (Required value is 450-600 ohms)
J1/J10(N)- K7(A1)
a. If continuity does not exist through switches, S13 or S7 (switches ON), replace defective switch. Refer to
b. If continuity does not exist through CB9 (CB9 ON), replace CB9. Refer to paragraph 3-49.
c. If continuity does not exist through heater assembly, replace heater (para 3-49) and reset heater assembly
3-34
