Centrovac; Fault- -Tracing - ESAB PSF 250 Instruction Manual

GB
7.2

Centrovac

Cleaning welding torches with integrated smoke evacuation
In order to maintain a constant level of suction, the inside of the welding torch handle
should be cleaned on a regular basis. The appropriate length of time between cleans
is dependant on how often the equipment is used and the amount of dust and oil
contained in the welding smoke.
8

FAULT- -TRACING

Please also read the operating instructions for the welding components, e.g. power
source and wire feed unit.
If the measures described below are not successful, please consult your dealer or
the manufacturer.
Problem
Welding torch becomes
too hot
No trigger function
Wire burnt back onto
the contact tip at stop
Irregular wire feed
Short arc between the
gas nozzle and
workpiece
Variable arc
Porous welds
bg15d1e
Cause
Contact tip is not tight enough.
S
Electrical connections to the
S
welding torch and to the
workpiece are loose.
Control cable interrupted/faulty.
S
Wrong burn back time set.
S
Worn contact tip.
S
Liner blocked.
S
Contact tip and wire diameter do
S
not match.
Wrong tension set on the wire
S
feed unit.
Spatter bridge between the
S
contact tip and gas nozzle.
Contact tip is worn or does not
S
match the wire diameter.
Incorrect welding parameters
S
set.
Liner worn.
S
Large amount of spatter in the
S
gas nozzle.
Insufficient or total lack of
S
shielding gas.
Draught is disturbing the
S
shielding gas.
- - 19 - -
Solution
Check and tighten.
S
Check and tighten.
S
Check/repair.
S
Decrease the burn back time.
S
Replace.
S
Blow through in both directions.
S
Replace contact tip.
S
Correct according to
S
manufacturer's instructions.
Clean and spray the inside of the
S
gas nozzle.
Check/replace the contact tip
S
Correct the welding parameters.
S
Replace the wire liner.
S
Clean the gas nozzle.
S
Check contents of the gas
S
bottle/hoses and the pressure
setting.
Shield welding area with
S
protective screens.