Trouble - Shooting - Jackle dualMIG 250 E Betriebsanleitung

20. Trouble - shooting

Any remedial action to defective electrical equipment must be carried out
by a qualified electrician!
Malfunction/error
mains connected and master
switch in pos.´ON´/
mains Control is not lit
master switch in pos.´ON´/
fan out of service
no function after pressing
torch key-button (no
tripping of contactor)
wire feed motor out of service
wire buckling between
wire feed rollers and guide tube
Irregular wire feed
Porous weld seam
Poor weld performance
Wire burns back into current
contact tip at start of process
Operating manual
Cause
loss of supply voltage
F1 fuse at auxiliary transformer
defective
mains Control lamp
defective
fan runs only in case of
excessive current source
temperature
torch key-button defective
torch Control line interrupted
Control board defective
temperature fault indicator is lit
Control board defective
excessive contact
pressure of wire feedrollers
distance from wire feed rollers to
guide tube too far
bad uncoiling of wire
wire-holding arbor runs heavily
wrong wire feed roller
dirty / defective wire guide tube or
spiral
clogged / defective current contact
tip
dirty/ rusty welding wire
wire guide tube misalign with wire
feed roller groove
work piece surface polluted (paint,
rust, oil, grease)
no shielding gas (solenoid valve
not opening)
insufficient shielding gas
gas nozzle polluted
1 mains phase not connected
deficient wire feed, feed rollers
idling
dualMIG 250E
Remedy
Check mains fuse,
Check mains cable
exchange F1 fuse
(T 1 A / 250 V)
Check/exchange
Control lamp
see Chapter 1
brief description
Check torch key-button
Check torch Controlline
Check/exchange
Control board
see Chapter 15
Control elements
Check/exchange
Control board
see Chapter 16 wire feed unit
Check distance /
realign wire guide tube.
Check / refit wire coil
Check wire- holding arbor
see Chapter 16 wire feed unit
see Chapter 16 wire feed unit
clean / exchange current contact
tip
exchange welding wire
see Chapter 16 wire feed unit
clean surface
Check / exchange solenoid valve
Check shielding gas at pressure
reducer
Check gas line for leakage
clean gas nozzle
Check mains fuse Check mains –
cable
see Chapter 16 wire feed unit
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