quency and timer drawer.
(2) Be sure the 10 pin connector and the two
quency and timer drawer.
banana plugs are firmly seated.
b. Installation/.
(3) Close and lock the door.
Figure 3-4. High frequency and
timer drawer, removal and installation.
3-20. Welding Machine Top and Housing
(3) Remove the four screws holding the fan as-
sembly to the rear panel.
Caution: Never under any circumstances oper-
(4) Remove the gas and water solenoid valves
ate the welding machine with the top and/or side
housing removed. In addition to the safety hazard,
improper cooling may result in damage to the
b. Installation.
ponents.
a. Removal. Proceed as follows to remove the top
(2) Install the gas and water solenoid valves
and the
housing from the welding machine.
(3) Install the four screws attaching the fan as-
(1)
Disconnect ac power from the welding ma-
sembly to the rear panel.
chine.
(2)
machine
top.
machine top.