Chicago Welding 98871 Set Up And Operating Instructions Manual page 27

Be cERtAIn to shut off the Welder, disconnect it from power, and discharge the gun to ground
before adjusting, cleaning, or repairing the unit.
but welder does not function when switched on
1. tripped thermal protection device:
Shut the welder's switch to off and allow it to cool for at least 20 minutes.
Reduce duration or frequency of welding periods to help reduce wear on the welder.
Refer to duty cycle section on page 16.
2. Faulty or improperly connected trigger (1c):
Qualified technician must check and secure/replace Trigger (1c).
3. Internal fuse blown:
Check/replace according to the following directions.
a. WARnIng! turn the welder OFF and unplug it before proceeding.
b. Press on the Cover Latch (8), then lift the Cover (31) using Handle (30). Remove Left
Side Panel (13).
c. Examine fuse on panel to see if metal wire inside is broken or not. See illustration.
nOtE: the circuit board is very delicate and
will be damaged if it is not supported
while the fuse is manipulated. If you
are have any doubts about doing this
without damaging the welder, have a
qualified technician replace the fuse.
d. If the fuse is broken, carefully support the
circuit board with a gloved hand while you
remove the old fuse. Support the circuit
board from behind while you install a new
2 Amp, 250 Volt fuse of the same type.
nEVER use another type or size fuse.
e. Reinstall the Left Side Panel (13), close
the Cover (31), and test the unit for
proper function before use.
SKU 98871 For technical questions, please call 1-800-444-3353.
tROUBLEShOOtIng (continued)
IMPORtAnt!
Power switch (7a) lights,
POSSIBLE cAUSES And SOLUtIOnS
Fuse
Page 27