Cloos GLC 353 MC3, Operating Instructions Manual

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B-37
Service and Maintenance
GLC 353/503/553 MC3
S2 System fault Overtemperature
The following components are provided with a temperature switch:
- Water cooling pump (motor winding)
- Fan (motor winding)
- Main transformer T1
- Rectifier
- Heat sink in cascade 1 1
- Heat sink in cascade 2 (GLC 503/553 MC3 only)
In the case of overload, the corresponding temperature switch opens.
The arc is switched off and the light diode
Temp on the operation panel
of the power source signals the fault.
Cause:
- Pump is overloaded by contaminated cooling agent or blocked
hoses.
- Motor is faulty.
- Permissible duty cycle has been exceeded.
- The cooling air inlet and outlet are covered or contaminated.
- The welding machine interior is severely contaminated.
- The ambient temperature is more than 40° Celsius.
When a flow switch for water cooling (optional) is installed, the LED Temp flashes in the case
of no or unsufficient cooling water flow.
S3 Error messages
CS Test number error
When the message 'CS' appears on display panel 3, this indicates an error in the data memory
of the machine. The PC Software MC3 is required for correction of same. You will find more
details in the PC Software Manual under Diagnosis/Memory administration and Backup.
S2 System fault Overtemperature