Draper D13/5A Anleitung Handbuch - Seite 17

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TROUBLE SHOOTING

FOR YOUR SAFETY ALWAYS TURN THE MAIN SWITCH ON THE

MACHINE"OFF" AND REMOVE THE PLUG FROM THE POWER SUPPLY

BEFORE CARRYING OUT ANY MAINTENANCE

TROUBLE

Noisy operation

Bit burns or smokes

Excessive drill

run-out or wobble

Drill binds in

workpiece

WARNING:

OR TROUBLE SHOOTING.

PROBABLE CAUSE

1. Incorrect belt tension

2. Dry spindle

3. Loose spindle pulley or

motor pulley

1. Incorrect speed

2. Swarf not coming out of hole

3. Blunt bit

4. Feeding too slow

5. Not lubricated

6. Bit running backwards

1. Bent bit

2. Worn spindle bearings

3. Bit not properly installed

in chuck

4. Chuck not properly

installed

1. Workpiece pinching bit

or excessive feed pressure

2. Improper belt tension

REMEDY

1. Adjust tension

2. Lubricate spindle with grease (ISO VG68)

3. Tighten set screws in pulleys

1. Change speed

2. Retract bit frequently to clear swarf

3. Sharpen or replace bit

4. Feed fast enough to allow drill to cut

5. Lubricate bit

6. Check motor rotation

1. Use a straight bit

2. Replace bearings

3. Install bit centrally

4. Refit chuck properly

1. Support or clamp workpiece

2. Adjust tension

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