Lincoln Electric X-TRACTOR 3A Service Manual page 36

X-TRACTOR ® 3A
PROCEDURE
1. Remove input power to the X-Tractor 3A.
2. Perform the Case Cover Removal Procedure.
3. Locate the timer T1 on the DIN rail. See Figure F.9.
4. Using a phillips screwdriver, label and disconnect leads A1 and A2
from the timer T1. See Figure F.10. See Wiring Diagram.
5. Carefully apply the external 24VAC supply to terminals A1 and A2
on the timer T1. The green LED should come on. If it does not
illuminate with the 24VAC applied to terminals A1 and A2, the
timer T1 may be faulty.
6. With the 24VAC applied to terminals A1 and A2 check the
resistance between the contact terminals 18 and 15. The
terminals should be "open".
7. Carefully jumper terminals A1 and Y1 together. The yellow LED
should illuminate and the contact terminals 18 and 15 should
close and the resistance between the two should be zero ohms.
8. Carefully remove the jumper from terminal Y1. The yellow LED
should then start to flash and the contact terminals 18 and 15
should still be closed with zero resistance between the two for
approximately 5 minutes.
9. If the timer T1 does not pass any of the above tests check the
settings on the timer. If the settings are correct the timer T1 may
be faulty. See Figure F.11 for the correct settings.
TIMER T1 TEST
Figure F.9 – Timer T1 location
TIMER T1
(LOCATED ON DIN RAIL)
10. Connect all leads previously removed.
11. Perform the Case Cover Replacement Procedure.
F-22
TROUBLESHOOTING AND REPAIR
(continued)