Manual

15
PPi Dual Drive
9 Troubleshooting
9 Troubleshooting
Note
• Ifthemeasuresdescribedbelowarenotsuccessful,pleaseconsultyour
dealer or the manufacturer.
• Pleasealsoconsulttheoperatinginstructionsforthewelding
components, such as power supply.
Fault Cause Solution
Torch neck or handle gets
too hot
•Contacttip/tipadapternottighten •Checkandtighten
•Powerconnectionslooseonthe
torch or the work-piece
•Checkandtighten
•Coolantowtoolow
•Pulseweldingderatesthetorchby
35%
•Duty-cycleoramperageexceeded
•Checkcoolingsystem,
increase coolant flow
•Changeparametersreduce
duty-cycle and/or switch to
water-cooled
•Changeparametersreduce
duty-cycle and/or switch to
water-cooled
No trigger function •Controlleadinterrupted/defective •Check/repair
•Flowcontrolvalveinthere-circulat-
ing cooling unit was triggered
•Checkcoolantlevelandtop
off, if necessary
Wire burn-back in the
contact tip
•Wrongparametersset •Checkorcorrectsetting
•Contacttipwornout •Replace
•Wireburn-backfunctionsetincor-
rectly
•Correct
•Trimsettingincorrect •Correct
Irregular wire feed •Linerclogged •Cleanbothdirectionswith
compressed air or replace it, if
necessary
•Driverollsupsidedown •Checkandcorrect,ifneces-
sary
•Contacttipandwirediameternot
matched
•Replacecontacttip
•Wrongcontactpressuresetonthe
wire feed unit
•Increaseorreducecontact
pressure
Arc between gas nozzle
and work-piece
•Spatterbridgebetweencontacttip
and gas nozzle
•Cleanandspraygasnozzle
interior
Erratic arc •Contacttipnotmatchedtothe
wire diameter or contact diameter
enlarged
•Checkthecontacttipand
replace it, if necessary
•Wrongweldingparametersset •Correctweldingparameters
•Linerscloggedorwornout •Replaceliners
Porosity formation •Spatterbuild-upinthegasnozzle •Cleangasnozzle
•Insufcientorlackofgascoverage •Checkgascylindercontents
and pressure setting
•Aircurrentsblowingshieldinggas
away
•Shieldweldingareawith
partitions
•Contaminatedbasemetal •Prepare/cleanmetalprop-
erly prior to welding
Tab. 7 Troubleshooting