4 Support Entries

Find here the status LED’s of the Beckhoff PC
and how to access the PC in case of a trouble shooting.


  • Are you sure that mercury is still in the rollers?
  • Do you see a mercury leakage? (mercury has a silver colour)
  • Do you have copper wire breaks frequently?
  • What diameter has the copper wire?
  • Are you sure you are using pure copper wire? (It happen ones, that steel-wire with a copper shield has been used by a customer)
  • What transformer step is in function at the moment? (see the big black manual switch)
  • Did you recently increase to a higher step on the transformer switch?

Pictures to be send:

  • Send us some clear pictures from the welder
  • Front side with the copper wire in view
  • Control panel
  • Manometer the air regulator on main air inlet (to see the adjusted air pressure > responsible for welding pressure)
  • Send us pictures of the pre-rounded working pieces (view from the top)

To do:

  • Check the isolation of the lower welding arm:
    • Disconnect the copper plate underneath the welding tranformer, and measure the isolation of the lower arm to the frame of the machine (only if z-bar is already insulated by brown insulating plates left and right!)
  • Regroove both welding rollers with the delivered regrooving tool
  • Send pictures of the new grooves (to avoid misunderstanding)
  • If you believe new grooves are not needed, send pictures of existing grooves
  • If you have spare welding rollers, change them. Normally the lower (smaller one) has to be changed more often than the upper one.

If the welding phases are wrong, then the welding current is probably loaded only by one phase!

Phase L1 and L2 (yellow & orange > see Elec Scheme L1 must be used to supply:

  • 18/0/18 VAC transformer and electronic print type WEC
  • Thyristor and welding transformer

We may have delivered some L1 and/or L2, with a wrong adjustment:

The center of the welding wheel/rollerhead with the welding ring diameter 140 mm, shouldbeX=4-6mmbeforethecenterof the fixed welding roller. It can create difficulties to keep the overlap, especially on long pieces.


L1 & L2

Undo this screw.


Turn the nut softly with screwdriver and plastic hammer.


Turn the nut softly with screwdriver and plastic hammer.


Shift the unit with welding wheel, according to the sketch, to achieve the offset of 4 – 6 mm.


Shift the unit welding wheel, according to the sketch to achieve the offset of X = 4 – 6 mm


NOTE: This offset will help to keep the welding piece in the Z-bar grooves during the welding process.
Don’t forget to tighten the nut and screw, after the successful procedure.


We like to apologize for the inconvenience caused and thank you for your support.