REHM INVERTIG.PRO 240 DC Betriebsanleitung Seite 112

Unit has different parameters on start
than on switch off
Cause:
Values are only saved after
Welding procedure saved.
Inert gas is not flowing
Cause:
Bottle is empty or the gas hose has been bent.
Pressure reducer is defective.
Gas valve in the machine is defective.
Flat connect on the gas valve is loose.
Welding process "Electrode"
Fans cannot be heard to be turning
Cause:
The fan level is adjusted to suit requirements, at low Check to see whether the fan switches
temperatures the fan will turn at lower revolutions
or switches off.
Fan is defective.
No high voltage impulse
Cause:
HF ignition is set to off
No inert gas available
Earth cable connected badly
Electrode is dirty
No suitable electrode
Gas pre-flow time too long
High frequency surge at torch
Connectors for torch and earth cable swapped
Welding current does not reach the specified value
or arc does not burn
Cause:
Earth cable connected badly.
Foot remote control attached and not
pressed.
Hand remote control attached
No inert gas or incorrect gas
48
Solution:
Carry out welding
Solution:
Check
Check
Contact service
Check
Gas valve remains closed
Solution:
to higher revolutions when put under more
load.
Contact service
Solution:
Switch on HF ignition
Check
Check
Sharpen
Change electrode
Shorten gas pre-flow time, or wait
Change torch
Connect the correct way round
Solution:
Check
Check
Set current on remote
Check
Faults