CHAPTER 7
REPAIR INSTRUCTIONS
Section I. CONTROL PANEL AND COMPONENTS
f. Installation. Install control panel (para 54).
90. Control Panel Assembly
91. Electrode Selector and Polarity Reversing
a. General. The control panel assembly is a part of
the machine housing and contains all controls, switches,
Switches
and gauges of the welding machine.
b. Removal. Remove control panel (para 54).
a. Disassembly. Disassemble the electrode selector
c. Disassembly.
Disassemble control panel in
and polarity reversing switches as shown in figure 17.
numerical sequence shown in figure 17.
b. Cleaning, Inspection, and Repair.
d. Cleaning, Inspection, and Repair.
(1) Clean all parts in an approved cleaning solvent
(1) Clean all parts in an approved cleaning solvent
and dry thoroughly.
and dry thoroughly.
(2) Inspect contact blades for burnt or corroded
(2) Clean switches with compressed air. Inspect
condition. Replace damaged or defective parts
panel for dents and cracks. Straighten panel if
as necessary.
dented or warped. Replace a damaged or
c. Reassembly. Reassemble the electrode and
defective panel as necessary.
polarity reversing switches in reverse order as shown in
(3) Inspect meters and gauges for cracked or
defaced dials. Replace damaged or defective
parts.
92. Starter Assembly
(4) Inspect electrical terminals and wiring for
corrosion and general condition. Replace any
a. Disassembly. Disassemble the starter in numerical
defective parts.
sequence as shown in figure 18.
(5) Inspect rheostat and switches for pitted or
b. Cleaning, Inspection, and Repair.
corroded contacts and general condition.
(1) Clean all parts in an approved cleaning solvent
Replace damaged or defective parts as
and dry thoroughly.
necessary.
(2) Inspect all parts for defects and damage.
e. Reassembly. Reassemble control panel assembly
Replace or repair defective or damaged parts.
in reverse order of numerical sequence as shown in
c. Reassembly. Reassemble starter in reverse order
of the numerical sequence shown in figure 18.
AGO 8244A
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