Praxair Compact 200H 2R Guide De L'utilisateur page 11

DAMAGE
Porosity in welding pool.
Failure on the welding quality.
The wire feeding motor do not run. Failure of the wire feed motor electrical
IMPORTANT!
DO NOT INSTALL, OPERATE OR MANTAIN THIS APPLIANCE BEFORE READ THIS USER'S GUIDE.
THE EQUIPMENT MUST BE INSTALLED, OPERATED OR MAINTAINED ONLY BY QUALIFIED PERSONS.
CAUSE
Gas failure
Solenoid valve blocked
Too much wind blowing through the welding
zone.
Torch nozzle blocked or in bad condition.
Welding piece too dirty, wet or greased.
Defective electrical contact of earth clamp or
torch.
Failure on electrical contactor.
Damaged rectifier bridge.
supply.
Failure of wire feed motor brushes.
PROCEEDING
Check the bottle pressure and control de
gas flow.
Check and, if necessary, disa semble for
cleaning.
Protect the welding zone from wind or
adjust up the gas flow.
Clean or replace the torch nozzle.
Clean the welding surfaces.
Well tighten the earth clamp and torch.
Check the earth cable.
Disassemble and clean electrical
contactor. If not possible, replace
contactor.
Check bridge and replace, if necessary.
Check and replace, if necessary the wire
feed motor fuse. Check the electrical
insulating of the wire feed motor.
Replace brushes.
200H 2R
11