9.1 SPINDLE SPEED ADJUSTMENT. Draper 12 Speed Floor Standing Drill, 600W, 12 Speed Floor Standing Drill

6. TECHNICAL DESCRIPTION

6.1 IDENTIFICATION

Spindle.

Motor tension locking knob.

Motor tension lever.

Table height crank handle.

Rack.

Table locking handle.

Work table.

Guard assembly.

No-volt on/off switch.

Spindle pulley.

Geared chuck.

Work table tilt locking bolt.

- 10 -

Base.

Moulded plug & cable.

Work table height/ rotation locking handle.

Column.

Depth stop.

Motor.

Motor tension locking knob.

9. SETTING THE BENCH DRILL

NOTE: Remove the plug from the socket before carrying out adjustment, servicing or maintenance.

9.1 SPINDLE SPEED

ADJUSTMENT - FIGS. 14 - 17

This drilling machine is equipped with 12 drilling speeds.Remove the pulley cover securing screw.

Select the speed most suitable for the intended application†.

Loosen both the locking knobs and adjust the motor tension lever releasing the tautness across the drive belts. Move the belt to the corresponding sections of the motor, intermediate and spindle pulleys ensuring the belts remain horizontal.

Apply pressure to the motor tension lever to tension the drive belt. With the correct tension achieved. Tighten both locking knobs .

Gently lower the pulley cover before tightening pulley cover securing screw. Never attempt to operate the drilling machine with the pulley cover open or not fully secured.

CAUTION: Over tensioning the drive belt will accelerate belt wear, increase the loading on drive bearings and the motor possibly leading to premature failure. Under tensioning the drive belt will lead to the drive belt slipping and increased noise.

†As a general rule material with a softer composition can be drilled faster as they cut more easily. Harder materials require a slower speed as attempting to make the hole at a high speed will result in the drill bit over heating which may result in a poorly finished hole, the bit annealing or the bit breaking.

Drilling wood too slowly can cause splintering.

FIG.10

SPINDLE

PULLEY

INTERMEDIATE

PULLEY

E

D

C

B

A

3

2

1

5

4

MOTOR

PULLEY

4

3

2

1

FIG.11

Slow

1

Setting

8

9

10

5

6

7

11

12

1

2

3

4

Speed

180 min -1

250 min

-1

300 min -1

400 min -1

480 min

-1

580 min -1

970 min -1

1,280 min

-1

1,410 min -1

1,540 min -1

2,270 min

-1

2,740 min -1

Fast

12

Drive Belt Position

Spindle Motor

A - 1 4 - 4

A - 1

B - 2

B - 2

C - 3

A - 1

E - 5

3 - 3

4 - 4

3 - 3

4 - 4

2 - 2

4 - 4

D - 4

E - 5

C - 3

B - 2

D - 4

3 - 3

3 - 3

2 - 2

1 - 1

2 - 2

FIG.12

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FIG.13