Malfunctions - Soyer BMH-22i Operating Instructions Manual

BMH-22i
9.1

Malfunctions

Error
Stud welder cannot be
switched on.
There is no arc even
though system is ready for
operation.
System does not weld, no
or only poor sparking.
Stud thread scorched.
No shielding gas flow
during welding process.
Stud does not lift, neither
preweld current nor main
current arc is generated,
Cause
 Elimination
One or several phases have failed.
Check mains supply fuses.
Stud is too loose in stud holder.
 Press stud holder together or tighten it.
System is not switched on or not connected to mains supply.
 Connect system to mains supply and switch on. When switching the
system on, the LEDs shortly light up.
Operating mode is set to PRE, LIFT, GAS
Set operating mode to "OP".
Welding cable, control cable or gas hose are not connected properly or
are damaged.
 Connect cables properly or check for damage. Replace if necessary.
Connecting plug or socket of stud welder is burnt down.
 Have plug or socket replaced by SOYER customer service.
Both earth cables are not properly connected or not connected at all, or
earth clamps are not attached to the workpiece.
 Connect earth cables; attach earth clamps to the workpiece.
Welding points and/or earth connection points at the workpiece are not
blank.
 Prepare workpiece and studs accordingly.
Height of lift and/or depth of immersion are not adjusted correctly.
Refer to the operating instructions of the welding gun to set the height
of lift and depth of immersion correctly.
Gas flow rate is set too high, i.e. higher than 5 l/min (arc is
extinguished).
Set gas flow rate to the maximum value of 4-5 l/min.
Stud is tilted in ceramic ferrule and does not lift.
 Ensure gun is vertically positioned on workpiece. Centre ceramic
ferrule and stud holder.
Control of stud welder or welding gun is defective.
 Contact SOYER customer service.
Stud holder worn
 Replace stud holder.
Gas cylinder is not or not properly connected to the system and/or valve
or shut-off valve are not open.
 Connect gas cylinder and/or open valve or shut-off valve.
Time for gas flow duration is set to "0"
 Set gas flow duration to the desired preflow time.
Gas flow rate is set too low.
 Set gas flow rate to 4-5 l/min by means of the control cock.
Solenoid valve in stud welder is soiled or defective.
 Deaerate solenoid valve, clean it and/or have it replaced by SOYER
customer service.
Height of lift is not correctly set.
 Set height of lift in accordance with the operating instructions of your
stud welding gun.
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