Troubleshooting - LORCH M-Pro BasicPlus Manuel D'utilisation

15

Troubleshooting

Fault
Torch becomes too hot
Torch switch has no
function when actua-
ted
Wire sticking or burnt
onto contact tip
Wire feed irregular or
failed completely
Equipment switches
off
Arc or short circuit
between contact tip
and gas nozzle
Unstable arc
- 48 -
Possible cause
Contact tip not tightened properly
Union nut from torch hose pack
to central socket is not correctly
tightened
Open circuit in control cable in the
torch hose pack
Thermal protection has triggered
Wire electrode jammed on the reel Check and replace if necessary
Burr at start of wire
Incorrect contact pressure on wire
feed unit
Torch faulty
Guide tube in the central socket is
missing or dirty
Welding wire reel badly wound
Surface rust on wire electrode
Torch internal coil clogged with
abrasion dust
Torch internal coil flexed
Wire brake setting too hard
Duty cycle exceeded
Insufficient cooling of components Check air inlet and outlet on
A spatter bridge has formed bet-
ween the contact tip and the gas
nozzle
Contact tip does not match the
wire diameter or contact tip is
worn
Troubleshooting
Rectification
check
Tighten the union nut
Check and replace if necessary
Allow the equipment to cool
down at no-load
Trim the end of the wire
Set as described in the opera-
ting instructions
Check and replace if necessary
Insert the guide tube or clean it
Check and replace if necessary
Check and replace if necessary
Unscrew the torch from the
equipment, remove contact tip
from torch and blow out the coil
with compressed air
Check and replace if necessary
Set as described in the opera-
ting instructions
Allow the equipment to cool
down at no-load
the equipment
Remove using suitable special
pliers
Check and replace if necessary
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