TM 5-6115-465-34
T0 35C2-3-446-2
NAVFAC P-8-625-34
TM 06858B/06859D-34
ELECTRIC WINTERIZATION KIT TROUBLESHOOTING CHART (CONT)
Table 8-2.
PROBABLE CAUSE
MALFUNCTION
CORRECTIVE ACTION
3. Heater element does
a. Defective wiring harness.
a. Replace wiring harness (para. 8-13).
not heat up
b. Replace heater element (para. 8-10).
b. Defective heater element.
c. Replace power relay (para. 8-9).
c. Defective power relay.
4. Pump does not cir-
a. Replace fuse (para. 8-9).
a. Defective fuse.
culate coolant
b. Replace switch (para. 8-9).
b. Defective switch.
c. Replace circuit breaker (para. 8-9).
c. Defective circuit breaker.
d. Defective semiconductor.
d. Replace semiconductor (para. 8-9).
e. Defective motor assembly.
e, Replace motor assembly (para. 8-11).
f. Defective pump.
f. Repair or replace pump (para. 8-11).
8-9. HEATER CONTROL ASSEMBLY.
shorting. Check circuit breaker continuity using an
ohmmeter. Replace circuit breaker if defective.
a. Removal. Refer to the Operator and Organi-
(5) Inspect fuse holder for cracks, corrosion,
zational Maintenance Manual for heater control as-
sembly removal instructions.
stripped threads and burns or other evidence of short-
ing. Replace if defects are noted.
b. Disassembly. Disassemble heater control
(6) Inspect indicator light for cracked or broken
assembly by following the ascending sequence of
lens, damaged or defective lamp, cracks, corrosion,
index numbers (1 through 60) assigned to figure 8-7
and burns. Replace any defective parts.
while observing the following:
(7) Inspect power relay for cracks, corrosion,
(1) Tag all electrical leads before disconnect-
and burns or other evidence of shorting. Using an
ing.
ohmmeter, check power relay coil resistance. Re-
sistance shall be 30-45 ohms at 770F (25C). Replace
(2) Disassemble heater control assembly only
power relay if damaged or defective.
as required to clean, inspect, test and replace com-
ponents.
(8) Inspect transformer for corrosion, cracks,
and burns or other evidence of overheating.
c. Cleaning, Inspection, and Repair.
(9) Using figure 8-8 as a guide, test trans-
(1) Clean all electrical parts with filtered
former as follows:
compressed air and a soft bristle brush. If neces-
sary, caked deposits may be removed with a clean,
(a) Using an ohmmeter, check resistance
lint-free cloth moistened with an approved solvent.
of windings. Winding 1-2 shall indicate 6.77 0.677
Do not dip electrical parts in cleaning solvent.
ohms. Winding 3-5 shall indicate 0.108 0.0108 ohm.
(2) Clean non-electrical parts with a clean,
lint-free cloth moistened with dry cleaning solvent
(b) Apply 230 Vac, RMS to winding 1-2
with all secondaries open circuit. Exciting current
(P-D-680) and dry thoroughly.
shall be less than 0.04 amps RMS (0.01 amp RMS for
400 Hz).
(3) Visually inspect switch for cracked
casing, corrosion, and burns or other evidence of
shorting. Check switch continuity.
(c) Apply 253 Vac RMS to winding 1-2
with all secondaries open circuit. Exciting current
(4) Inspect circuit breaker for cracked
shall be less than 0.065 amp RMS (0.016 amp for
400 Hz).
casing, corrosion, and burns or other evidence of
8-13
