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Problem:

• % going up to 100% after some seconds of welding
• A current is dropping down after some seconds of welding
• There is a low current of only a few amp’s
• Current is dropping significantly down after some seconds of welding

Possible cause(s):

• the welding roll might be defect
  • change welding roll

• in case you use a mercury based welding roll
  • add some mercury

• the pendulum roll might be defect
  • change the pendulum roll

• in case you use a mercury based pendulum roll
  • add some mercury

• the transformer step switch might be defect
  • change transformer step switch

NOTE: The reason for the low current is due to an open circuit. The wire might be also hot in this case. If you have in general a high power percentage you might reduce the frequency.

Cause:

Problem:
The display shows the set current value, but the duty cycle is very low or 0%!

Possible cause:

• Short circuit in the welding transformer!

DO NOT ATTEMPT TO SWITCH “ON” THE CURRENT ANYMORE!
Further attempts to switch on the current, can destroy or damage the semiconductors (IGBT) in the Pacemaker!