TM 5-3431-225-15
removal and installation.
Section XI. VENTILATING COOLING SYSTEM
c. Installation.
3-50. General
(1) Refer to figure 3-20 and install the
The welding machine is cooled by a fan motor
fan, motor, and guard assembly.
assembly which operates from a tap on the pri-
maly of the control transformer. It has three
(2) Install the welder top and side panels
blades which pull the air through the welder and
out the back. The ballast resistors are mounted
on the fan guard so they can be cooled by the air
3-52. Motor
as it passes through them. To make any repairs
on the fan motor blade or guard, the complete
a. Removal.
assembly must be removed.
(1) Remove the fan, motor, and guard as-
sembly (para 3-51).
(2) Refer to figure 3-21 and remove the
a. Removal.
fan motor.
(1) Remove the top and side panels from
the welding machine (para 3-26).
b. Installation.
(2) Refer to figure 3-20 and remove the
(1) Refer to figure 3-21 and install the fan
fan, motor, and guard as a complete unit.
motor.
(2) Install tile fan, motor, and guard assem-
ure 3-21 and disassemble and reassemble the
bly (para 3-51).
fan, motor, and guard assembly.
