KERCOMET 170
and
210, MULTIMIG 150
Troubleshooting
25
Fault
Possible cause
Rectification
Inert gas missing
Gas cylinder empty
Replace
Torch faulty
Check and replace if necessary
Pressure reducer dirty or faulty
Check and replace if necessary
Gas cylinder valve faulty
Replace gas cylinder
Inert gas does not switch off
Gas valve dirty or sticking
Remove torch and pressure
reducer, blow out the gas valve in
the opposite flow direction with
compressed air
Inert gas feed insufficient
Inert gas quantity set incorrectly at the
pressure reducer
Set the inert gas quantity as
described in the operating
instructions
Pressure reducer dirty
Check the pressure reducing
nozzle
Torch or gas hose blocked or leaking
Check and replace if necessary
Inert gas blown away by draughts
Eliminate the draughts
Welding power is reduced
Phase missing
Check the equipment using a
different power socket; check the
supply cable and the mains fuses
Insufficient ground contact at work piece
Create a good clear ground
connection
Ground cable not correctly inserted at the
equipment
Lock the ground connector at the
equipment by turning clockwise
Torch faulty
Repair or replacement
Ground cable connector
becomes hot
The connector was not locked by turning
clockwise
check
Wire feed unit has increased
wire abrasion
The wire feed rollers do not match the wire
diameter
Fit the correct feed rollers
Incorrect contact pressure on wire feed
unit
Set as described in the operating
instructions
Tab. 4:
Troubleshooting