maxiMIG 250/300
Operating manual Page 25
19. Trouble-shooting
Any remedial action to defective electrical equipment must be carried out
by a qualified electrician!
Malfunction/error Cause Remedy
mains connected and master loss of supply voltage check mains fuse,
switch in pos.´ON´/ check mains cable
mains control is not lit
F1 fuse at aux. transformer exchange F1 fuse
defective (T 0,5 A / 250 V)
mains control lamp check/exchange
defective main switch
master switch in pos.´ON´/ fan runs only in case of see chapter 14
fan out of service excessive current source brief description
temperature
no function after pressing torch key-button check torch key-button
torch key-button (no defective
tripping of contactor)
torch control line check torch control line
interrupted
control board defective check/exchange control
board
temperature fault indi- see chapter 14
cator is lit control elements
wire feed motor out of control board defective check/exchange
service control board
wire buckling between excessive contact see chapter 15
wire feed rollers and pressure of wire feed wire feed
guide tube rollers
distance from wire feed check distance /
rollers to guide tube too realign wire guide
far tube.
Irregular wire feed bad uncoiling of wire check / refit wire coil
wire-holding arbor check wire-
runs heavily holding arbor
wrong wire feed roller see chapter 15
wire feed
dirty / defective see chapter 15
wire guide tube or spiral wire feed
clogged / defective clean / exchange
current contact tip current contact tip
dirty/ rusty exchange
welding wire welding wire
wire guide tube misaligned see chapter 15
with wire feed roller groove wire feed
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