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2.6. ADjuSTmENT OF PRESSuRE
Adjust the pressure of feed rolls with the control screw (20) so that the wire is fed into the wire
guide tube evenly and allows a little braking when coming out from the contact tip without slipping
at the feed rolls.
Excessive pressure causes flattening of the filler wire and damage to the coating. It also
causes undue wear of the feed rolls as well as friction.
2.7. ADjuSTmENT OF TIghTNESS OF REEL bRAkE
Adjust brake force as so big that the wire is not allowed to become too loose on the reel so that
it would spill from the reel when the rotation of the reel stops. Need for brake force is increased
with increase of wire feed speed.
Since the brake loads for its part the motor, you shouldn't keep it unnecessarily tight.
2.8. buRN bACk TImE
Electronics of feed unit controls stopping of welding automatically so that the wire end doesn't melt
fastened to the contact tip or the work piece. Automatics work regardless of the wire feed speed.
2.9. gROuND CAbLE
Fasten earthing press of ground cable carefully, preferably direct to welding piece. Contact surface
of press always should be as large as possible.
Clean the fastening surface from paint and rust!
Use in your MIG equipment at least 70 mm2. Thinner cross-sectional areas might cause overheating
of connectors and insulations.
Make sure that the welding gun in your use is designed for max. welding current needed by you!
Never use a damaged welding gun!
1 – Promig 530 / 061
Brake force is adjusted through hole in locking device of reel
hub by screwing the control screw (41) with screwdriver.
41
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