12
PLASMA
ARC45
WARNING
There are extremely dangerous voltage and power
levels present inside this unit. Do not attempt to
diagnose or repair unless you have had training in
power electronics measurement and troubleshooting
techniques.
A. Temperature light on.
1.
Fan blocked, check and correct its condition.
2.
Unit is overheated, let unit cool down for at least 5
minutes. Make sure the unit has not been operated
beyond Duty Cycle limit, refer to technology
parameters in Section 3.1.
3.
Faulty components in unit, return for repair or have
a qualified technician repair as per service manual.
B. Torch fails to ignite the arc when the torch switch is
activated
1.
Faulty torch parts, inspect torch parts and replace if
necessary.
2.
Gas pressure too high or too low, adjust to proper
pressure.
3.
Faulty components in unit, return for repair or
have a qualified technician repair as per service
manual.
C. No cutting output, Torch activated power source on,
Gas flows, Fan operates
1.
Torch not properly connected to power supply,
check that torch leads are properly connected to
the power supply.
2.
Work cable not connected to work piece, or
connection is poor, make sure that the work cable
has a proper connection to a clean, dry area of the
workpiece.
3.
Faulty components in unit, return for repair or have
qualified technician repair as per service manual.
4.
Faulty Torch, return for repair or have a qualified
technician repair as per service manual.
Note:
Do not fire the pilot arc into the air needlessly.
Doing so causes nozzle orifice erosion and reduces
consumables lifespan.
D. Low cutting output
1.
Incorrect setting of CURRENT (A) control, check and
adjust to proper setting.
2.
Faulty components in unit, return for repair or
have a qualified technician repair.
E. Difficulty Starting
1.
Worn torch parts (consumables). Shut off input
power. Remove and inspect torch shield cup, tip
and electrode. Replace electrode or tip if worn;
replace shield cup if excessive spatter adheres to it.
F. Arc shuts off during operation, Arc will not restart
when torch switch is activated
1.
Power Supply is overheated (Over-Heat light on) let
unit cool down for at least 5 minutes. Make sure
the unit has not been operated beyond Duty Cycle
limit. Refer to Section 3.1 for duty cycle
specifications.
2.
Gas pressure is out of range, adjust as needed.
3.
Torch consumables worn, check torch shield cup, tip,
starter element, and electrode; replace as needed.
4.
Faulty components in unit, return for repair or have
a qualified technician repair as per service manual.
G. No gas flow, Power light on, Fan operates
1.
Gas not connected or the pressure is too low, check
gas connections. Adjust gas pressure to the proper
setting.
2.
Faulty components in unit, return for repair or have
a qualified technician repair as per service manual.
H. Torch cuts but low quality
1.
Current (A) control set too low , increase current
setting.
2.
Torch is being moved too fast across workpiece,
reduce cutting speed.
3.
Excessive oil or moisture in torch, hold torch 1/8 inch
(3 mm) from clean surface while purging and
observe oil or moisture buildup (do not activate
torch). If there are contaminants in the gas,
additional filtering may be needed.
