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Operating Instructions BG-250G11/G13
Maintenance November 2004
© Copyright Blastrac 47 Revision (A) 12-23-04
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 bearings and cause losses of the total efficiency. Too low belt tension
will cause slipping with the result of a very high temperature of the V-belt a
premature 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 damages the V-belt. Collection of dirt due to oil, grease or
chemicals has to be avoided.
In order to get perfect power transmission the V-belt drive has to be checked
regularly.
Fig. 7.4 (electric unit shown)