Metabo Electra Beckum MIG/MAG 170/30 TL - Manual (Page 11)

8 Trouble Shooting
Irregular wire feed Incorrect tension of tension roller
Pilot groove of feed roller and intake nozzle not
aligned
Liner clogged or not correct size for wire
Wire spooled irregularly, rusty or of inferior quality
Wire spool carrier to tight
Feed rollers dirty of worn, groove not matching
wire size Adjust tension
Align
Check and/or change
Clean or change liner
Change spool
Loosen
Clean or replace
Cause Remedy Fault
Brittle or porous welding
seam Gas line fittings not tight
Gas cylinder empty
Gas cylinder valve closed
Pressure regulator not working
Solenoid valve not working
Gas shroud or line in lead ass'y clooged
Air draft at weld seam
Workpiece not clean
Wire of inferior quality or unsuitable gas Check fittings
Replace cylinder
Open valve
Check
Check power at solenoid
Clean shroud and spray, blow out gas line
Protect from draft or increase gas flow
Remove rust, grease, paint
Change wire, use suitable gas
Constant gas flow Solenoid valve defective or dirty Check, clean or replace
No wire feed Trigger switch or leads in lead ass'y defective
PCB defective
Fine wire fuse on PCB defective Check, replace if necessary
Replace
Replace (2 amp time-lag)
Wire feed speed not
adjustable PCB defective Replace
Not welding current with
normal working wire feed Contactor faulty
Step with faulty
Earth cable not conducting Replace
Replace
Correct
Arcing when gas shroud
touches workpiece Short-circuit between contact tip and gas shroud Clean shroud, treat with anti-clogging spray or
nozzle dip (see footnote below).
Torch becomes exces-
sively hot Contact tip loose or too large for wire diameter Tighten tip; replace with correct size tip
No function of machine Mains fuse/circuit breaker tripped Reset or replace
Torch under current when
machine is switched OFF Contactor sticky or contacts burned Check and replace
3-phase machine:
excessive spattering with
all welding step setting One phase missing Check contactor for proper function
Check mains fuses, check power at contactor
terminals (all 3 phases)
3-phase machine:
excessive spattering at a
particular welding step Step switch defective
Cables between step switch and transformer
loose or broken Check and replace
Check and replace
Important! The capacitors of the 1-phase machines need 40 seconds to discharge completely after the machine
is switched off. If the electrode wire makes contact with the workpiece during this period, a short
discharge spark is generated.