Repair
46 309574L
Wire Harness Check
Test Hose Continuity
2. See FIG. 19. Disconnect 6-pin transformer connec-
tor (P) from J13 at temperature control board.
Remove red wire from transformer hose length tap
you are using (R).
3. Using an ohmmeter, check between pin 6 (P6) of
connector (not board) and red wire (R). There
should be continuity.
4. If test fails, trace wires until failure is located.
Test Temperature Control Board to
Transformer Wire Harness Continuity
2. See FIG. 19. Disconnect 6-pin transformer connec-
tor (P) from J13 at temperature control board.
3. Check for continuity between:
a. Connector pin 1 (P1) and T1 on 20A hose circuit
breaker (817A).
b. Connector pin 3 (P3) and T2 on 20A hose circuit
breaker (817A).
c. Connector pin 5 (P5) and T3 on 50A hose circuit
breaker (806).
(380 V Only) In-rush Current Limiter Test
1. Ensure all harnesses, cables and connectors are
properly connected. Connect hose.
2. Connect main power supply. Turn main power on.
3. Turn on hose heat by pressing hose heat button
.
4. Contactor in front of transformer should snap shut.
5. If contactor does not close, turn main power off and
check fuse item 120614. If blown replace.
6. If contactor does not close when hose heat is turned
on with new fuse move to transformer checks.
7. If fuse continually blows, replace In-rush limiter kit
288359.
Test Current Sensor Continuity
2. Disconnect 14-pin connector from J1 on tempera-
ture control board, page 38.
3. Using an ohmmeter, test for continuity across pins 5
and 6 of connector (not board). Reading should be
20-25 ohms. If not, replace current sensor (32). See
F
IG. 19.
1. Turn main power OFF . Disconnect power
supply. Leave hose plugged in.
1. Turn main power OFF . Disconnect power
supply. Leave hose plugged in.
1. Turn main power OFF . Disconnect power
supply.
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