Delta 11-990 Instruction Manual download pdf (Page 12)

3. The table can be tilted right or left by pulling out and

removing table alignment pin (C) Fig. 25, and loosening

table locking bolt (D). NOTE: If pin (C) is difficult to

remove, turn nut (E) clockwise to pull pin out of casting.

Tilt table to the desired angle and tighten bolt (D).

4. When returning table to the level position, loosen pin

to the 0 degree mark on the tilt scale and then replace

pin (C) and tighten locking bolt (D) Fig. 25.

5. A tilt scale (E) Fig. 27, is provided on the table

bracket casting to indicate the degree of tilt. A witness

line (F) is also provided on the table to line up with scale

(E).

Fig. 25

Fig. 26

Fig. 27

SPINDLE SPEEDS

Five spindle speeds of 620, 1100, 1720, 2340 and 3100

RPM are available. 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. 28.

Fig. 28, illustrates which steps on the pulleys the belt

must be placed to obtain the five speeds available.

Fig. 28

SPINDLE

MOTOR

3100

2340

1720

1100

620

Fig. 29

CHANGING SPEEDS AND

ADJUSTING BELT TENSION

1. DISCONNECT TOOL FROM POWER SOURCE.

2. Lift up the belt and pulley guard (A) Fig. 29.

3. Release belt tension by loosening tension lock knob

(B) Fig. 29, 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. 29. A

belt positioning chart (D) is provided on the inside top

cover of the drill press for your convenience.

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Delta 11-990 Instruction Manual Page 12

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