Delta 11-985 Instruction Manual download pdf (Page 11)

CHANGING SPEEDS AND

ADJUSTING BELT TENSION

Fig. 23

Fig. 24

1. Disconnect the drill press from the power

source.

2. Lift up the belt and pulley guard (A) Fig. 23.

3. Release belt tension by loosening tension lock knob

(B) Fig. 23, and pivoting the motor toward the front of the

drill press, as shown.

4. While holding the motor toward the front of the drill

press head, position the belt (C) on the desired steps of

the motor and spindle pulleys, as shown in Fig. 23. A

belt positioning and drill speed chart (D) is provided on

the inside top cover of the drill press for your

convenience.

5. After the belt is positioned on the desired steps of

the motor and spindle pulleys, pivot motor away from

the drill press head until the belt is properly tensioned

and tighten tension lock knob (B) Fig. 24. The belt

should be just tight enough to prevent slipping.

Excessive tension will reduce the life of the belt, pulleys

and bearings. Correct tension is obtained when the belt

between the pulleys using light finger pressure.

Fig. 25

Fig. 26

SWITCH

The switch (A) Fig. 25, is located on the front of the drill

press head. To turn the drill press "ON" move the switch

to the up position. To turn the drill press "OFF" move the

switch to the down position.

LOCKING SWITCH IN

THE "OFF" POSITION

When the tool is not in use, the switch should be locked

in the “OFF” position. This can be done by grasping the

switch toggle (B) and pulling it out of the switch, as

shown in Fig. 26. With the switch toggle (B) removed,

the switch will not operate. However, should the switch

toggle be removed while the drill press is operating, the

switch can be turned "OFF" once, but cannot be

restarted without inserting the switch toggle (B).

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Delta 11-985 Instruction Manual Page 11