TM 10-4610-241-24
TO 40W4-13-42
Table 3-1. Direct Support Troubleshooting - continued
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
REVERSE OSMOSIS (R.O) PUMP ASSEMBLY - continued
Step 6. Disconnect pump cable assembly at pump motor and perform continuity check of R.O. pump motor
cable assembly. Refer to Paragraph 3-26.
a.
If pump motor cable assembly is open, repair it. Refer to Paragraph 3-26.
b.
If pump motor cable is not defective, repair pump motor. Refer to Paragraph 3-43.
Step 7. Turn off power at power source and check jog circuit for continuity as follows: make additional point-to-
point continuity checks as necessary to isolate faulty component.
J10(C)
-
P8(P)
J9(P)
-
J9(M)
P9(P)
-
P8(P)
P9(M)
-
P8(M)
J8(M)
-
K1(A2)
K1(A1)
-
K1(A2) (90 - 120Ohms)
J1O(N)
-
Kl(A1)
J1(N)
-
Kl(A1)
a.
If switches, S13 or S12 are defective (switches ON), replace them. Refer to Paragraph 3-49.
b.
If CB9 is open (CB9 ON), replace CB9. Refer to Paragraph 3-53.
c.
If cable assembly, W52 is defective, repair it. Refer to Paragraph 3-27.
d.
If relay K1 is open and/or 90-120 Ohms is not measured between Al and A2, replace motor starter.
Refer to Paragraph 3-61.
e.
If heater assembly is open, replace defective heaters (Paragraph 3-61) and reset heater assembly.
f.
If wires are open, tighten loose connections or replace defective wire.
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