Section IX. GAS AND WATER SOLENOID VALVES
b. Cleaning and Inspection.
3-26. General
(1) Clean the gas and water solenoid valves
The gas solenoid valve is used when the opera-
with an approved cleaning solvent and dry thor-
toy is doing inert gas arc welding. The water sole-
oughly.
noid valve is used only when a watercooled torch
(2) Inspect for breaks, cracks, defective or
is used. The solenoid valves are operated automat-
corroded fittings, defective or corroded fittings,
ically through the post-purge timer.
defective wire leads, or other damage.
(3) Replace a defective solenoid valve as
3-27. Gas and Water Solenoid Valves
necessary.
a. Removal.
c. Installation.
(1) Remove the left side shroud (para 3-13).
(1) Refer to figures 3-4 and 3-5 and install
the gas and water solenoid valves.
(2) Refer to figures 3-4 and 3-5 and remove
(2) Install the left side shroud (para 3-13).
the gas and water solenoid valves.
Section X. VENTILATING-COOLING SYSTEM
the air through the welder and out the back. The
3-28. General
ballast resistor is mounted with the fan guard so
The welding machine is cooled by a fan motor
it can be cooled by the air flow through the fan. To
assembly which operates from the control trans-
make any repairs on the motor, fan blade, or
guard, the complete assembly must be removed.
former. It has three aluminum blades which pull
