Clarke METALWORKER CDP201B, Operating And Maintenance Instructions Manual

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Fig. 11
1
2
3
4
1
2
3
4
A
B
SPINDLE PULLEY MOTOR PULLEY
Spindle Motor Drill Speed Spindle Motor Drill Speed
Pulley Pulley RPM Pulley Pulley RPM
A B A B
1 4 1 180 7 1 2 970
2 4 2 250 8 2 3 1280
3 3 1 300 9 3 4 1410
4 3 2 400 10 1 3 1540
5 2 1 480 11 2 4 2270
6 4 3 580 12 1 4 2740
2. 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. 11), one either side of the head, and
turn lever B - Fig.5 clockwise to relieve any
tension on the belts. Referring to the chart
inside the belt cover (which is duplicated
below), fit the belts in the positions
corresponding to the spindle speed
required.
2. Lever the motor, on its bracket, away from the head, by turning lever B - Fig.11,
anticlockwise 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. 11).
NOTE: If the belt should slip whilst drilling, adjust the belt tension.
DRILL SPEED TABLE
T
he table below gives the belt arrangements for given drill speeds. The diagram shows the
belts fitted to A1 and B3, giving a drill speed of 1540 RPM.
A full chart is also located on the inside of the pulley cover.
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