Troubleshooting & repair, Main transformer removal & replacement (continued) – Lincoln Electric IDEALARC R3R-500 User Manual
Page 94
REASSEMBLING THE MAIN
TRANSFORMER INTO THE MACHINE
NOTE: The following procedure assumes you have
completely reassembled the transformer coils
as described in the procedure above. The
lower iron has remained in place in the
machine. See Figures F.26 and F.27.
1. Resolder the choke thermostat lead.
2. Attach the bottom choke lead to the negative recti-
fier plate.
3. Attach the top choke lead to the polarity selector
switch or the negative output terminal.
REASSEMBLE THE LIFT BAIL
1. Carefully position the lift bail onto the machine
base. Using the 9/16” socket wrench, attach the lift
bail to the base of the machine with four bolts, flat
washers, and lock washers.
2. Using the 9/16” socket wrench, attach the lift bail to
the transformer top and bottom irons with four
bolts.
3. Install resistor R3 (40 ohms, 100 watts).
4. If the optional Pocket Amptrol diodes are installed,
resolder the leads to the shunt and the optional
polarity switch. Resolder leads #218 and #219 to
the sensing resistor.
5. Attach the fiber baffles to the left and right sides of
the choke.
6. Reattach any transformer coil connections that
were previously removed.
7. Install the machine case top and sides.
TROUBLESHOOTING & REPAIR
F-60
F-60
IDEALARC R3R
MAIN TRANSFORMER REMOVAL & REPLACEMENT (continued)