10.4.8.2 Checking belt tension
Check belt tension when they are warm, not hot, to avoid length variations through temperature.
The belt tension can be checked by hand: To check the tension, press the belt inwards with the
thumb at the mid-point between pulleys.
Fig. 55 Manually checking the belt tension
I
Drive belt I
(Testing position A)
* pressure load approximately: 10 lb
Play approximately: 10 – 12 in.
II
Drive belt I
(Testing position B)
* pressure load approximately: 10 lb
Play approximately: 6 – 8 in.
1. Check belt tension by hand (see Fig. 55).
Drive belt tension insufficient: Tension the drive belt.
2. Replace the belt guard.
3. Turn on the «battery isolating switch».
4. Close the doors.
10 Maintenance
10.4 Engine maintenance
No.: 901765 05 USE
Operator Manual Screw Compressor
M114 SIGMA CONTROL SMART
123
