Trouble Shooting - CEMONT PRECISA 200MP Bedienungs- Und Wartungsanleitung

EN

8 - TROUBLE SHOOTING

This chart will assist you in resolving common problems you may
encounter.
PROBLEM
No "life" from welder.
Fan operates normally, but when gun trigger
pulled, there is no wire feed, weld output or
gas flow.
Feed motor operates but wire will not feed.
Lack of penetration.
Wire is birdnesting at the drive roller.
Wire burns back to contact tip.
Workpiece clamp and/or cable gets hot.
Gun nozzle arcs to work surface.
Wire pushes torch back from the workpiece.
Poor quality welds.
Weld deposit "stringy" and incomplete.
Weld deposit too thick.
Display not clear.
When welder is turned on, the display shows
ERR1 and / or ERR2.
TROUBLE SHOOTING
POSSIBLE CAUSE
Input cable or plug malfunction.
Wrong size fuse.
Faulty trigger on gun.
Thermostat intervention.
Faulty wire feeding motor (rare).
Insufficient feed roller pressure.
Burr on end of wire.
Liner blocked or damaged.
Voltage or wire feed speed too low.
Loose connection inside the machine (rare).
Worn or wrong size contact tip.
Loose gun connection or faulty gun assembly.
Wrong size wire.
Torch moved too fast.
Eccessive pressure on drive roller.
Gun liner worn or damaged.
Contact tip clogged or damaged.
Liner stretched or too long.
Contact tip clogged or damaged.
Wire feed speed to slow.
Wrong size contact tip.
Bad connection from cable to clamp.
Slag buildup inside nozzle or nozzle is shorted.
Wire feed speed too fast.
Nozzle clogged.
Torch held too far from the workpiece.
Bad connection between earth clamp and
workpiece.
The workpiece is excessively oxidized or painted.
Insufficient gas at weld area.
Rusty, painted, damp, oil or greasy workpiece.
Rusty or dirty wire.
Poor ground contact.
Incorrect gas / wire combination.
Torch moved over workpiece too quickly.
Gas mixture incorrect.
Torch moved over workpiece too slowly.
Welding voltage too low.
Failure of system memory.
16 - EN
POSSIBLE SOLUTION
Check for proper input cable connection.
Check fuse and replace as necessary.
Replace torch trigger.
Allow welder to cool. The extinguishing of the pilot lamp / switch on
the front panel indicates the thermostat has closed.
Replace wire feeding motor.
Increase roller pressure.
Re-cut wire square with no burr.
Clear with compressed air or replace liner.
Re-adjust the welding parameters.
Clear with compressed air and tighten all connections.
Replace the contact tip.
Tighten or replace torch.
Use correct size welding wire.
Move the gun smoothly and not too fast.
Adjust pressure on drive roller.
Replace wire liner.
Replace contact tip.
Cut wire liner at the right lenght.
Replace the contact tip.
Increase wire speed.
Use correct size contact tip.
Tighten connection or replace cable.
Clean or replace nozzle.
Decrease wire feed speed.
Clean or replace nozzle.
Hold the torch at the right distance.
Clean and deoxidate the contact area of the earth clamp.
Brush carefully the point to be welded.
Check that the gas is not being blown away by drafts and if so move
to more sheltered weld area. If not check gas cylinder contents
gauge, regulator setting and operation of gas valve.
Ensure workpiece is clean and dry.
Ensure wire is clean and dry.
Check ground clamp/workpiece connection.
Check on the manual for the correct combination.
Move the torch slower.
See shielding gas table.
Move the torch faster.
Increase welding voltage.
Set display contrast.
Contact the service center.