Operating Instructions
BG-250G13-S
Maintenance May
2005
7.7 V-Belt
Drive
Prior to any repair work on the machine and its drives, secure
the machine against unintentional starting. Put the machine
to its “Maintenance Mode.” Chapter 2.5
The V-belt drive is designed specifically for this machine. To force a higher
output through an excessive high tension of the V-belt will break the belt,
damage the bearing unit. Low belt tension will cause slippage and will result in
very high V-belt temperatures. This will cause premature V-Belt wear.
Temperatures over 160° F (70° C) for a long period will decrease the working life
and the efficiency of the V-belt. The grooves of the V-belt pulleys must be free of
rust and dirt and must not show any damage. The use of belt wax or similar
substances in order to increase the friction coefficient is not necessary and will
damage the V-belt. Collection of dirt due to oil, grease or chemicals must be
avoided.
In order to get perfect power transmission the V-belt drive has to be checked
regularly.
Fig. 7.4 (electric unit shown)
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Revision (A) 5-4-05
46
