Handling
quantum
MASCHINEN - GERMANY
© 2007
GB
Page 26 Drilling machine B 13 / B14 / B16 / B20 / B25 / B32 Version 1.2.5 18 / 01 / 2008
4.3 Speed alternation
WARNING!
Only open the cover hood when the drilling machine is disconnected from the electrical
power supply.
Close and screw the covering hood after each modification of the number of revolutions.
Disconnect the machine from the electrical
power supply.
Detach the screws on the protective
cover.
Open the protective cover of the belt
drive.
Illustr.4-6: Clamping screw V-belt
tension
Untighten the clamping screw of the V-belt tension and push the motor in direction of the drill
chuck.
Type Vario:
Adjust the required speed with the potentiometer. Depending on the position of the V-belts on
the V-belt pulleys you will get a certain speed range.
„Speed table“ on page 27
INFORMATION
The drilling machine B 20 , B 25 and B 32 are equipped with a handle by which you may push
the motor in direction of the drill chuck.
Thus the pre-tension of the V-belts is loosened.
Put the V-belt/-s onto the required V-belt pulley/-s.
Retighten the V-belt/-s
Close and rescrew the cover.
ATTENTION!
Make sure that the tension of the V-belts is correct.
If the tension of the V-belts is too high or too low, it may lead to damages. The V-belts are
well tightened if the they could be squeezed approximately 1 cm.
V-belt pulleys
clamping screw
V-belt tension
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