Troubleshooting; Cutting Arc Not Stable; Plasma Cutter Does Not Function When Switched On; Weak Arc Strength - Chicago Electric 97994 Set Up And Operating Instructions Manual

TROUbLESHOOTINg

Shut off the Welder,
disconnect it from power, and
discharge the torch to ground
before adjusting, cleaning, or
repairing the unit.

Cutting arc not stable.

• Possible Causes and Solutions:
• Loose Cutting Torch (13) cable or
Earth Clamp (14) cable:
Check to ensure that all connec-
tions are tight.
• Damaged Cutting Torch (13) or
loose connection within Torch:
Have a qualified technician inspect
and repair/replace as necessary.
Plasma Cutter does not function when
switched on.
• Possible Causes and Solutions
• Tripped thermal protection device:
Allow the unit to cool until the RED
"Overheating" LED goes off, then
resume use. Reduce duration or
frequency of cutting periods to help
reduce wear on the Plasma Cutter
and frequency of overheating.
• Faulty Power Switch (11): Have
a technician repair/replace Power
Switch.
• Internal fuse blown: Have a quali-
fied technician check/replace.

Weak Arc strength

• Possible Cause and Solution:
• Incorrect line voltage:
Check the line voltage and, if insuf-
SKU 97994 For technical questions, please call 1-800-444-3353.
TO PREVENT
SERIOUS INjURY:
ficient, have a licensed electrician
remedy the situation.

Arc does not ignite.

• Possible Causes and Solutions:
• Improper ground connection:
Make certain that the work piece
is contacted properly by the Earth
Clamp (14) and that the work piece
is properly cleaned near the Earth
Clamp and the welding location.
• Improperly sized or excessively
worn Nozzle (6A):
Verify that Nozzle is the proper size
for the Cutting Torch used. Check
that the hole in the tip is not de-
formed, enlarged, or dirty. If need-
ed, replace Nozzle with proper size
and type.
Air does not flow.
• Possible Causes and Solutions:
• Nozzle (6A) Plugged:
Clean Nozzle. If damaged, replace.
• Air Pressure Regulator (33) closed:
Make sure Regulator is adjusted
properly.
• Air supply hose blocked:
Check air supply hose, and hose
within Cutting Torch (13) cable.
Plasma Cutter continually overheats.
• Possible Causes and Solutions
• Input voltage too high or too low.
Have electrician inspect and service
building electrical circuit.
REV 09a
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