Global Machinery Company DP21 - Manual (Page 11)

11
Note. When the table is tilted the work piece should be
clamped to the table.
Installing and removing drill bits
CAUTION. Always ensure that the drill press is switched off
and the plug is removed from the power point before making
any adjustments.
Using the chuck key loosen the chuck (11) so that the
jaws are open wide enough to allow a bit to be inserted.
The chuck is loosened by rotating the collar in an anti-
clockwise direction.
Place the bit into the open chuck as far as it will go.
Tighten the chuck by rotating it with the use of the chuck key
in a clockwise direction.
To remove the bit, loosen the chuck by rotating the collar in
an anti-clockwise direction.
Setting the drilling depth
CAUTION. Always ensure that the drill press is switched
off and the plug is removed from the power point before
making any adjustments.
To change the maximum permitted depth of travel, first
loosen the depth scale nut (20).
Rotate the feed wheel (4) to the desired depth on the depth
scale (12).
Ensuring the drill bit is tight in the chuck use the feed
wheel to lower the spindle until the drill bit just touches the
work piece.
Changing the speed
CAUTION. Always ensure that the drill press is switched off
and the plug is removed from the power point before making
any adjustments.
The speed of the drill press is
determined by the size of the
pulley steps that the belt is
attached to. Using a smaller
pulley step on the front pulley
means a faster drill speed; using
a larger pulley step on the front
pulley means a slower drill speed.
The table indicates the speed
of the drill in the various belt
positions.
Remove the plug from the mains socket.
Lift up the pulley cover (1).
Loosen belt tension lock knob (2).
Move the belt to the correct pulley step for the desired speed.
Push motor backward until moderate belt tension is
acquired. Tighten the belt tension lock knob.
2500 RPM
1900 RPM
1400 RPM
890 RPM
500 RPM