Troubleshooting & repair – Lincoln Electric INVERTEC POWER WAVE 450 SVM112-B User Manual

Page 229

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F-169

FAN MOTOR REMOVAL AND REPLACEMENT

(continued)

FIGURE F.64 - MACHINE BACK SECURED TO LIFT BAIL.

TROUBLESHOOTING & REPAIR

11. With the 3/4" wrench, remove the lead

connected to the rear positive (+) output
terminal.

12. Swing the back panel up and secure it to

the lift bail. See Figure F.64. Use heavy
string or wire. BE CAREFUL NOT TO
DAMAGE THE RS232 CONNECTOR OR
THE WIREFEEDER RECEPTACLES.

13. With the slot head screw driver, remove

the clip holding the fan blade onto the
motor shaft.

14. Remove the fan blade by carefully sliding

it off the motor shaft.

15. With the 11/32" nut driver or socket

wrench, remove the two fan motor mount-
ing nuts. Remove the split-ring lock
washers and flat washers.

16. Remove the fan motor by sliding it out of

the mounting bracket and free of the
machine.

NOTE: Repeat this procedure to remove the

second fan motor if necessary.

17. To install the fan motor, do the following:

Carefully position the fan motor into place
on the mounting bracket with the leads
toward the terminal strip. Install the flat
washers, split-ring lock washers, and nuts
to the motor mounting bolts. Carefully
slide the fan blade all the way onto the
motor shaft. The side of the hub with the
metal clip goes toward the motor. Install
the clip so that it grips the rounded side of
the D-shaped shaft, not the flat. Swing
the back panel back down, being careful
not to damage the RS232 connector or
the wire feeder receptacles. Install the
lead to the rear positive (+) output termi-
nal. Install the case back lower sides and
the lower rear panel with the 5/16" screws.
Attach the fan motor leads to the terminal
strip and replace the tie wraps cut during
removal so that the motor leads are held
away from the fan blades.