Craftsman ZJ4113 Manual De Usuario

16

1. Correct the overload condition

2. Increase supply wire size or eliminate

using an extension cord

3. Adjust belt tension

4. Have voltage checked by an electrician

and corrected, if necessary

5. Test motor to fix or replace

1. Power line is overloaded

2. Undersize wires in supply system

3. Drive belt tension is too high

4. Low line voltage

5. Motor malfunctioning

  Motor fails to develop full

  power.

  Motor will not start

1. Machine is not plugged in

2. Low line voltage

3. Loose connection

4. Defective switch

5. Defective motor

1. Plug in machine

2. Check fuses or reset circuit breaker, if

using extension cord, discontinue and

plug machine directly into wall outlet

3. Check plug and all connections

4. Replace switch

5. Replace motor

1. Slower feed rate of the bit into material

2. Sharpen or replace drill bit

3. Check motor capacitor and line voltage

1. Overfeeding of drill bit into material

2. Dull drill bit

3. Motor malfunction, not reaching speed

  Motor stalls

1. Reduce load, slow down feed rate

2. Clean motor to increase air flow

1. Motor is overloaded

2. Air flow restricted on the motor

  Motor overheats

  Noisy operation

1. Excessive machine vibration

2. Dry spindle

3. Loose pulleys

4. Noisy motor

1. Tighten any loose parts. Secure drill

press to the floor or plywood base

2. Lubricate spindle, quill, etc.

3. Make needed corrections

4. Check motor bearings and fan

  Drill bit binds in the work

  piece

1. Work piece is pinching the drill bit

2. Excessive feed rate

3. Chuck jaws are not holding bit tight

1. Support or clamp down the work piece

2. Slow down the feed rate

3. Tighten the chuck jaws on the bit

  Drill bit or material smokes   

  or burns

1. Drilling speed is too fast

2. Chips are not clearing out of hole

3. Dull drill bit

4. Feeding bit is too slow

5. Bit is not lubricated

1. Reduce drilling speed

2. Retract drill bit frequently to clear chips

3. Change or sharpen drill bit

4. Increase feed speed

5. Lubricate bit. Make sure bit and flutes

are clean of rust, resin build-up, etc.

1. Spindle return spring has improper

tension

1. Adjust spindle return spring tension

  Wood splinters on the 

  underside of work piece

1. No supporting ‘back up material’ under

the work piece

1. Use scrap board or plywood under the

work piece for support when the drill bit

bores through the work

  Drill bit slips 

1. Bit not installed securely in the chuck

1. Re-install the bit tightly in the chuck

  Drill bit wanders or 

  wobbles

1. Bit not installed correctly in the chuck

2. Bit sharpened incorrectly

3. Bit is bent or shank is damaged

1. Re-install bit in chuck jaws correctly

2. Sharpen bit correctly or replace bit

3. Replace bit

  Quill returns too slow or    

  too fast