TM 5-3431-225-15
3-23. Reduction of
High Frequency Output
Section VII. WELDING MACHINE TOP, HOUSING, DOORS,
AND PANELS
b. Installation.
3-25. General
The welding machine housing is constructed of a
housing.
heavy metal top, sides, back housing and front
(2) Install the fan, motor, and guard as-
housing. This section contains information on
the maintenance of these components.
welding machine sides.
Caution: Never, under any circumstances, op-
erate the welding machine with the top and/or
welding machine top.
housing removed. In addition to the safety haz-
ard, improper cooling may result in damage to
3-27. Front Door
Assembly
a. Removal.
components.
welding machine top.
3-26. Welding Machine Top and
Housing
welding machine sides.
a. Removal.
the
front door assembly.
welding machine top.
b. Installation.
welding machine sides.
front door panel,
(3) Remove the fan, motor, and guard as-
welding machine sides.
housing.
welding machine top.
Section VIII. FUSES, SWITCHES, TIMERS AND
the entire welding operation. The High Fre-
quency Switch should be placed in the "OFF"
a. The ON-OFF push buttons control the pow-
position when using the metallic arc (stick elec-
er to the welding machine.
trode) welding process.
c. The Automatic-Manual Switch is set to
tions:
and
"START,"
"CONTINUOUS,"
"Automatic" for Gas Tungsten Arc Spot Weld-
"OFF." In the " S T A R T " position, high fre-
ing.
quency will be introduced into the welding cir-
d. The Weld Timer is used to control the spot
cuit only when starting to weld. This position is
weld time interval desired-adjustments of from
usually used for Gas Tungsten de arc welding.
zero (0) to three (3) seconds are obtainable.
In the "Continuous" position, usually used for
e. The post flow gas and water valves timer
will be introduced into the welding circuit during
controls the length of time the gas and water will