Lincoln Electric X-TRACTOR 3A Service Manual page 32

X-TRACTOR ® 3A
AUXILIARY CONTACTS RESISTANCE TEST
F1 THERMAL
CIRCUIT BREAKER
PROCEDURE
1. Remove input power to the X-Tractor 3A.
2. Perform the Case Cover Removal Procedure.
3. Locate the F1 thermal circuit breaker on the back of the machine.
See Figure F.7.
4. Using a phillips screwdriver, remove the two screws securing the
F1 thermal circuit breaker enclosure cover. See Figure F.7.
5. Locate terminals numbered 1L1, 2T1, 3L2, 4T2, 5L3 and 6T3. See
Figure F.8. See Wiring Diagram.
6. Locate the two auxiliary contact leads #43 and #44. See the
Wiring Diagram. See Figure F.8.
7. Perform the resistance checks per Table F.1.
8. If the resistances are correct, the testing is complete.
9. If the resistances are not correct, the thermal circuit breaker or
auxiliary contact may be faulty.
10. Using a phillips screwdriver, attach the two screws securing the
F1 thermal circuit breaker enclosure cover. See Figure F.7.
11. Perform the Case Cover Replacement Procedure.
F1 THERMAL CIRCUIT BREAKER AND
Figure F.7 – F1 thermal circuit breaker location
F1 THERMAL CIRCUIT
BREAKER ENCLOSURE
COVER SCREWS
F-18
TROUBLESHOOTING AND REPAIR
(continued)