W1751 25" Wide-Belt Sander

Troubleshooting

This section is provided for your convenience—it is not a substitute for the Woodstock Service Department. If you need help troubleshooting, you need replacement parts, or you are unsure of how to perform the procedures in this section, then feel free to call our Technical Support at (360) 734-3482.

OFF

Motor & Electrical

SYMPTOM

 

POSSIBLE CAUSE

 

CORRECTIVE ACTION

 

Machine does not

1.

Emergency stop push-button is engaged/

1.

Rotate clockwise slightly until it pops

 

start or a breaker

 

faulty.

 

out/replace it.

 

trips.

2.

Power supply is at fault/switched OFF.

2.

Ensure hot lines have correct voltage

 

 

 

 

 

on all legs and main power supply is

 

 

 

 

 

switched ON.

 

 

3.

Wall fuse/circuit breaker is blown/

3.

Ensure power supply circuit is correct

 

 

 

tripped.

 

size for machine startup load; replace

 

 

 

 

 

weak breaker.

 

 

4.

Fuse in machine electrical box has blown.

4.

Correct short/replace fuse in machine

 

 

 

 

 

electrical box.

 

 

5.

Sanding belt position limit switch is

5.

Adjust belt tracking to correct working

 

 

 

depressed/at fault.

 

range; replace faulty limit switch.

 

 

6.

Plug/receptacle is at fault or wired

6.

Test for good contacts; correct the

 

 

 

incorrectly.

 

wiring.

 

 

7.

Thermal overload relay has tripped.

7.

Turn cut-out dial to increase working

 

 

 

 

 

amps and push the reset pin. Replace if

 

 

 

 

 

tripped multiple times (weak relay).

 

 

8.

Start capacitor is at fault.

8.

Test/replace if faulty.

 

 

9.

Motor ON button or ON/OFF switch is at

9.

Replace faulty ON button or ON/OFF

 

 

 

fault.

 

switch.

 

 

10.

Contactor not getting energized/has

10.

Test for power on all legs and contactor

 

 

 

burnt contacts.

 

operation. Replace unit if faulty.

 

 

11.

Wiring is open/has high resistance.

11.

Check for broken wires or disconnected/

 

 

 

 

 

corroded connections, and repair/replace

 

 

 

 

 

as necessary.

 

 

12.

Emergency stop push-panel is stuck/

12.

Free push-panel from binding; replace

 

 

 

switch is at fault.

 

faulty switch.

 

 

13.

Centrifugal switch is at fault.

13.

Adjust/replace the centrifugal switch in

 

 

 

 

 

the motor.

 

 

14.

Motor is at fault.

14.

Test/repair/replace.

 

 

15.

Motor connection wired incorrectly.

15.

Correct motor wiring connections.

 

Motor stalls

1.

Feed rate too high.

1.

Feed workpiece slower.

 

(resulting in

2.

Depth of cut too great.

2.

Reduce depth of cut.

SERVICE

blown fuses or

 

loose.

 

tighten if necessary.

noise coming from

 

 

tripped circuit).

 

 

 

 

 

Loud, repetitious

1.

Pulley set screws or keys are missing or

1.

Inspect keys and set screws. Replace or

 

machine

2.

Motor fan is hitting the cover.

2.

Replace motor fan.

 

 

3.

V-belt is at fault.

3.

Replace V-belt.

 

Machine is loud,

1.

Excessive depth of cut.

1.

Decrease depth of cut.

 

overheats or bogs

2.

Dull sanding belt.

2.

Replace sanding belt.

 

down in the cut.

 

 

 

 

 

 

 

 

 

 

 

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Woodstock W1751 owner manual Troubleshooting, Motor & Electrical