Troubleshooting & repair – Lincoln Electric IDEALARC SVM 122-A User Manual
Page 99
TROUBLESHOOTING & REPAIR
F-55
F-55
LINCOLN
®
ELECTRIC
IDEALARC DC-400
REMOVAL OF LIFT BAIL
1. Remove the main input supply power to the
machine.
2. With the 5/16” nut driver, remove the case
top and sides.
3. Remove the two fiber baffles from the left
and right sides of the lift bail adjacent to the
main transformer. See Figure F.25.
4. Remove the fiber baffle from the left side of
the choke.
5. Remove the two leads from resistor R1
(15 ohms, 100 watts).
6. Remove the positive capacitor strap from
the output shunt.
7. Remove the negative capacitor strap from
the mode selector switch.
8. Remove lead #204 from resistor R2
(40 ohms, 50 watts) located on case back.
9. Remove leads #204 and #227 from resistor
R3 (7.5 ohms, 100 watts) located on case
back.
10. Remove the sheet metal screw that holds
the capacitor bank assembly to the case
back. (This should enable the capacitor
bank to be removed with the lift bail assem-
bly.)
11. Using the 9/16” socket wrench, remove the
four bolts (left and right) mounting the lift bail
to the transformer top and bottom irons.
12. Using the 9/16” socket wrench, remove the
four bolts, flat washers, and lock washers
mounting the lift bail assembly to the base of
the machine.
The transformer and choke assembly is now
loose and free to slide or “tip” on the base of the
machine.
13. Remove the lift bail by lifting straight up and
clear from the machine.
MAIN TRANSFORMER REMOVAL & REPLACEMENT (continued)
WARNING
FIGURE F.25 – LIFT BAIL REMOVAL