Clarke METALWORKER CDP401B, Operating & Maintenance Instructions

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(inches) and metric (mm). To set a drilling depth:
1. With the power OFF, lower the drill bit so that it
contacts the work and hold in that position.
2. Slacken off the locking screw and turn the collar
so that the measurement for the depth of hole
required is in line with the pointer (C). Lock the
collar in this position using the locking screw.
The drill is now set to drill holes to your pre-deter-
mined depth, from that particular start point.
CHANGING DRILL (SPINDLE) SPEED
Before changing the speeds, ensure the machine is switched OFF, and
disconnected from the mains supply.
1 Undo the Belt Tension Locking Screws (A -Fig. 13), one either side of the
head, and turn lever B - Fig.13 clockwise to relieve any tension on the
belts. Referring to the chart inside the belt cover (which is duplicated on
page19), install the belts in the positions corresponding to the spindle
speed required.
2. Lever the motor, on its bracket,
away from the head, using the
lever B - Fig.13, so that tension
is applied to the belts.
NOTE: The idler pulley will ‘float’ so
that tension is equally applied to
both belts
Tension is correct, when the belts
deflect by approx. ½” at their
centre when using reasonable
pressure with the thumb and
forefinger.
Lock the motor in this position using the two Locking Screws (A - Fig. 13).
NOTE: If the belt should slip whilst drilling, adjust the belt tension.
Fig 12
Fig 13