Beisler 100-68 - Manual (Page 48)

2.3 Toothed belt tension
Caution: Risk of injury!
Switch the main switch off.
Check and adjust the toothed belt tension only with the sewing unit
switched off.
Standard and checking
Over the tightening length S= 300 mm the toothed belt must bend
under the test load FV = 34 N.
Consequences of a too high toothed belt tension
–
Reduced durability
– Noisy running
Consequences of a too low toothed belt tension
–
No faultless mesh between belt teeth and disc toothing
– The teeth may skip over under load
– Non-uniform stitch lengths
– Loss of steps possible
– Unscrew the screws 1 and take off the covering cap 2.
– Place the test load in the middle of the toothed belt (e.g. with the
help of a spring balance).
The tension of the toothed belt is correct if the upper belt half just
touches the lower one.
10
1 2