Section IV. MAINTENANCE
d. Push down lock button on right side of Gun.
4.1 GENERAL
Carefully slide off drive roll housing including welding
wire.
This section covers preventive maintenance, inspec-
tion and service and repairs required to keep the Gun
e. Make sure mating surfaces of Gun and housing
at minimum standards for efficient operation.
are clean. If necessary, use compressed air to re-
move any dust or dirt.
Preventive maintenance consists of cleaning, tighten-
ing, and minor repairing designed to prevent down-time
f. Make sure gas orifices at front of Gun barrel
of equipment for major service and parts replacement.
are not clogged.
At 30 day intervals and, whenever the wire guide fit-
g. Check for damage on all hoses and cables. Make
tings are replaced, inspect and service the Gun as
sure all connections are tight.
follows:
h. Insert protruding wire of drive roll housing into
CAUTION
liner retainer of Gun barrel. Slowly slide housing into
place on Gun until it locks in.
MAKE SURE ALL POWER IS OFF.
i. Screw nozzle onto Gun, Hand tighten.
a. Clean Gun exterior.
b. Unscrew and remove nozzle.
j. Turn power ON. Operate Gun with trigger for
a short interval to ascertain satisfactory operation.
Use jog button, if attached, to test wire feed mechan-
c. Remove accumulated spatter from nozzle. Be
ism.
sure threads are clean and in good condition.
REMEDY
PROBABLE CAUSE
SYMPTOM
a. Turn ON.
No welding arc with power
a. Welding power source
OFF.
ON and Gun trigger de-
pressed.
b. Contactor trouble.
b. Check and repair.
c. Repair or replace.
c. Defective cable.
d. Malfunction in Gun.
d. See Table IV.
e. See feeder manual
e. Malfunction in feeder.
No gas flow with power ON
a. Gas source OFF.
a. Turn ON.
and Gun trtgger depressed.
b. Clogged line.
b. Repair or replace
c. Malfunction in Gun.
c. See Table IV.
d. Malfunction in feeder.
d. See feeder manual.
No water flow with power
a. Turn ON.
a. Water source OFF.
ON and Gun trigger de-
pressed.
b. Clogged line.
b. Repair or replace.
c. See Table IV.
c. Malfunction in Gun.
d. See Control Manual.
d. Malfunction in control.
