Testing
The valve can be tested on a separate compressed air line.
Before removing the valve, stop the compressor (see section Stopping).
On a Full-Feature unit also stop the dryer.
Close the air outlet valve, switch off the voltage, open drain valves (4) (if applicable) and unscrew filler plug
(3) one turn to permit any pressure in the system to escape.
If the valve does not open at the set pressure stamped on the valve, replace the valve.
No adjustments are allowed. Never run the compressor without a safety valve.
6.4 Belt set exchange and tensioning
Read the warning in the Preventive maintenance schedule section.
Belt tensioning procedure
Step Action
1 Stop the compressor, close the air outlet valve and switch off the voltage.
For Full-Feature versions: also stop the dryer.
2 Remove the front panel of the compressor housing.
3 Remove the side, back and top panels of the compressor housing.
4 Loosen the 4 bolts (2) by one turn.
5 Adjust the belt tension by turning tensioning nut (1).
Instruction book
2920 7105 31 55
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