Draper D16/16F Instructions Manual - Page 12

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SPINDLE SPEEDS

Sixteen spindle speeds of: 240, 320, 360, 470,

540, 580, 860, 880, 1130, 1270, 1350, 1560,

1990, 2020, 2480 and 3150 are available with

your drill. The highest speed is obtained when

the belt is on the largest step of the motor

pulley and the smallest step of the spindle

pulley as shown in Fig. 13.

CHANGING SPEEDS AND ADJUSTING

BELT TENSION

1. Disconnect the drill press from the power

supply.

2. Remove the pulley cover locking screw

Fig. 14 and open the pulley cover.

3. Release the belt tension by releasing the

tension lock knobs

to release tension on the motor.

4. Position the two belts

steps of the motor, centre and spindle pulleys,

as shown in Fig.15.

5. After the belt is positioned on the desired

steps of the motor and spindle pulleys, turn

handle

to retension the motor, tighten lock

knobs

Fig.16. The belt should be

tightened just enough to prevent it from

slipping. Excessive tension will reduce the life

of the belts pulleys and bearings. Correct

tension is obtained when the belts can be

flexed approximately 25mm out of line

midway between the pulleys using light finger

pressure.

OPERATION AND USE

Fig. 15 and then turn

on the desired

Fig.13.

Spindle

Fig.14.

Fig.15.

Fig.16.

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Motor