EN - 14
BAL.0253.0 • 2017-04-07
12 Disassembly
EWR
11.1 Deactivating the functions of the EWR (bypass)
1
Use the ON/OFF button to switch off the EWR gas monitoring system.
2
The EWR gas monitoring system must remain connected to the power
supply and gas supply.
3
Only the red control diode is lit.
12 Disassembly
Green control
diode
Red control
diode
Cause
Troubleshooting
Lit
Lit
• Inlet pressure too low
(< 2.0 bar)
• Increase inlet pressure
• Check gas supply
Lit (during the
welding process)
Lit (during the
welding process)
• Cable assembly counter
pressure is too high
• Check the cable assembly for
contamination and resistance
• Inlet pressure too low
(< 2.0 bar)
• Increase inlet pressure
• Check gas supply
• If both diodes are still lit
• Verification by qualified
personnel
Lit
Dark
• EWR functions ready
• /
Dark
Lit
• EWR is off
• Switch on the EWR
Dark
Dark
• No power supply
• Check the power supply and
connect/replace if necessary
Tab. 9
Check the control diodes
DANGER
Risk of injury due to unexpected start-up
The following instructions must be adhered to throughout all maintenance,
servicing, assembly, disassembly and repair work:
• Close off the gas supply.
• Disconnect all electrical connections.
• Switch off the entire welding system.