7.4 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. (See section Stopping)
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).
6 The tension is correct when a force of 50 N (11.25 lbf) applied at the midpoint of the belt
causes a deflection of 6 mm (0.23 in).
7 Retighten bolts (2).
8 Refit the bodywork panels.
Belt replacement 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.
Instruction book
2920 7199 10 75
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