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B-5
B-5
OPERATION
CLEANING TIP AND GAS NOZZLE
Clean the contact tip and gas nozzle to avoid arc
bridging between them. Bridging can result in a short-
ed nozzle, poor welds and an overheated gun. Hint:
Anti-stick spray or gel, available from a welding supply
distributor, may reduce buildup and aid in spatter
removal.
CHANGING MACHINE OVER TO FEED
OTHER WIRE SIZES
The machine is shipped from the factory ready to feed
0.035" (0.9 mm) diameter wire. To operate the
machine with other sizes of wire, it is necessary to
change the contact tip and change the drive roll to
other sizes. Refer to Changing the Contact Tip and
Changing the Drive Roll in the MAINTENANCE sec-
tion for specific information on these procedures.
OVERLOAD PROTECTION
THERMAL PROTECTION
The machine has a maximum output duty cycle of
20%. If the duty cycle is exceeded, a thermal protector
will shut off the output until the machine cools to a
normal operating temperature. This is an automatic
function of the machine and does not require user
intervention.
HANDY MIG
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