OPTIMUM
M A S C H I N E N - G E R M A N Y
Operation
Version 1.3.2 dated 2015-01-22
Page 21
Original operating instructions
DG20
US
4.5.4 Adjustment of limit stop and infeed of drill
Do not turn on the drill bit grinder.
Adjust the position of the drill using the
infeed screw and the limit stop screw.
Screw or unscrew the infeed screw
so that the cutting edge of the drill
does not touch the cup wheel.
Fig.4-8:
Adjusting screws
Adjust the limit stop screw so that if
you move the top slide by means of
the motion lever, the bit holder
won’t contact the cup wheel, but the
drill inserts into the cup wheel as
much as possible.
Fig.4-9:
Adjustment
4.6
Turning on the drill bit grinder
Turn the drill bit grinder on.
Actuate the green on-button
beneath the EMERGENCY-STOP
cover.
Close the EMERGENCY-STOP
cover a little - but not completely -
in order to guarantee the EMER-
GENCY-STOP function.
Turn the potentiometer to 225% in
order to attain full speed.
Fig.4-10:
ON / OFF button
Motion lever
Limit stop screw
Infeed screw
Bit holder
EMERGENCY-
STOP
button "OFF"
button "ON"
rpm
rpm
