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TROUBLESHOOTING AND REPAIR | |||
| CONTACTOR REPLACEMENT | (continued) |
|
| FIGURE F.26. |
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11/16" BRASS
NUTS
CONNECTORS
POLARITY
SWITCH 
ELECTRODE
CABLE
VOLTAGE SENSING
LEAD #67
ELECTRODE
LEAD
WELDING CABLES
CONTACTOR
WORK SENSING LEAD
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REPAIR PROCEDURE
1. Open the case door. Remove the wire reel by removing the retaining collar. See Figure F.5.
2. Remove the screws holding the control box cover in place and remove the control box cover.
3. Remove the two fiber baffles from the area in front of the contactor. See Figure F.25.
4. With a 3/4” wrench, remove the electrode lead. See Figure F.26.
5. Using the 11/16” wrench, remove the two brass nuts from the contactor terminals. Remove the heavy leads and lead #67 from the terminals. Note location of lead #67. See Figure F.26.
6. Remove the 5/16” screw holding the contactor bracket to the spindle bracket.
7. Disconnect the contactor coil leads by separating the two
8. Cut or remove any cable ties or harness tape as necessary.
9.Carefully remove the contactor assembly from the
10.Install a new contactor in the
11.Connect the contactor coil lead
12.Place contactor assembly in position.
13.Install the 5/16" screw to secure the contactor to the spindle assembly.
14.Install the welding cables and voltage sensing lead #67 to the contactor and secure with the two 11/16" brass nuts. See Figure F.26. Be sure brass nuts are tight. 11
15.Install the baffles in front of the contactor.
16.Install the control box cover and secure by installing the screws previously removed.
17.Install the wire reel and retaining collar and close the case door.
18.Install the two 5/8” screws previously removed from the bottom of the machine.
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