Draper HD25/12CF 사용 설명서 - 페이지 13

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SPINDLE SPEEDS

Twelve spindle speeds of: 170, 255, 291, 436,

446, 562, 1087, 1368, 1427, 2073, 2251 and

3280rpm 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. Lift up the belt and pulley guard ✪✌ (Fig. 14).

3. Release the belt tension by loosening

locking knob ✫✌ (Fig. 15) and moving tension

lever ✬✌.

4. With the belts slack, position the two belts

✭✌ on the desired steps of the motor, centre

and spindle pulleys for the correct speed as

shown in Fig. 15.

5. After the belt is positioned on the desired

steps of the pulleys, move the tension lever

until motor is under tension and the belt is

properly tensioned. Tighten tension lock knob

✮✌ (Fig. 16). The belt should be just tight

enough to prevent slipping. Excessive tension

will reduce the life of the belts, pulleys and

bearings. Correct tension is obtained when

the belts ✯✌ can be flexed about 25mm out of

line midway between the pulleys using light

finger pressure.

OPERATION AND USE

Fig.13.

Spindle

Fig.14.

Fig.15.

Fig.16.

- 12 -

Motor

✭✌

✫✌

✬✌

✯✌

✮✌

✪✌