Trouble - Shooting - Jackle conMIG 300 Betriebsanleitung

34. Trouble - shooting

Any remedial action to defective electrical equipment must be carried out
by a qualified electrician!
Malfunction/error
Display
T° C – 01/02/03 – hot
Display
T° C – int – z.B +56
(See Point 20)
Main switch ON
Control box MC without function
No function after pressing torch
trigger key
Fire feed motor out of service
Wire buckling between wire feed
rollers and guide tube
Irregular wire feed
Porous weld seam
Wire burns back into current
contact tip at start of process
Operating manual
Cause
Engine overheated
(See Point 33)
Thermal sensor line interrupted
Wrong type of machine in the
control box set
Ambient temperature below -10 ° C
or above +40 ° C
Thermocouple defect in the control
box
Failed one or more system phases
Primary fuse on auxiliary
transformer defective
Fuse in control box MC defective
Torch trigger defective
Torch control line interrupted
Control box MC defective
Control box MC defective
Fire feed motor defective
Wiring between control box and
Motor interrupted
Pressure of the wire feed rolls to
big
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
Cogged / defective current contact
tip
Dirty/ rusty welding wire
Wire guide tube misaligned with
wire feed roller groove
Workpiece surface polluted(paint,
rust, oil, grease)
No shieldig gas(solenoid valve not
opening)
Insufficient shielding gas
Gas nozzle polluted
Deficient wire feed, feed rollers
idling
Remedy
Machine to cool down with a
running fan
Look for and eliminate interruption
Contact service partner
Bring Machine into normal
temperature range
Change control box
Sensor repaired
Check main supply and fuses
Change fuse 2A slow
Change fuse 6,3A slow
Change torch trigger
Check torch control line
Change control box
Change control box
Change wire feed motor
Check wiring
See chapter 29
Ceck distance / realign wire guide
tube
Ceck / refit wire coil
Ceck wire- holding arbor
Use the right wire feed roller
See chapter 29
See chapter 29
Clean / exchange current contact
tip
Exchange welding wire
See chapter 29
Clean surface
Check / exchange solenoid valve
or gas tube
Check shielding gas at pressure
reducer
Check gas line for leakage
Clean gas nozzle
See chapter 29
conMIG 300
Page 35