Tensioning of the belts must be performed with specific dedicated tooling.
Adjusting the tension of the drive belts
Step Action
1 Stop the compressor, close the air outlet valve and switch off the voltage.
2 Remove the front door, the internal panel, the top cover and the pulley protection.
3 Loosen the 4 bolts (2) by one turn.
4 Adjust the belt tension by turning tensioning nut (1).
5 The force and deflection varies with the power of the unit, and with the total running
hours of the belt.
The values to be measured are indicated with a label (1) on the frame:
6 Retighten bolts (2).
7 Refit the bodywork panels.
Instruction book
70 2920 7201 40
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