7.4 Safety valve
Testing
Danger: No adjustments are allowed. Never run the compressor without safety valve.
Warning: The safety valve (SV) test can only be performed by authorized personnel and is
protected by a security code.
1. Stop the compressor, close the air outlet valve and switch off the voltage.
2. Depressurize the compressor.
3. Remove the safety valve. See section Introduction for the location of the safety valve (SV).
4. Test the safety valve on a separate compressed air circuit by gradually increasing the pressure.
If the safety valve does not open at the specified pressure, it must be replaced. See section
Temperature protection and safety valve settings for the opening pressure of the safety valve.
7.5 Belt replacement
Procedure
Note: The belts must be replaced as a set, even if only one of the belts is worn. Only use
genuine belts.
1. Remove the service panel (S).
2. Loosen the screw (A).
Instruction book
66 2920 7219 10
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