Wen 3970 Manual

14
PROBLEM CAUSE SOLUTION
The motor does not work. Defective motor, power cable or
plug.
1. Specialized personnel should
check the machine.
2. Close the safety cover.
Machine stalls or is underpow-
ered.
1. Wrong blade for the workpiece
material (metal).
2. Feed rate too fast for task.
3. V-belt is slipping.
1. Use a blade with correct prop-
erties for your type of cutting.
2. Decrease the feed rate.
3. Replace bad v-belt and re-
tension.
Machine has vibration or noisy
operation.
1. V-belt is slapping the belt cover.
2. V-belt is worn or loose.
3. Pulley is loose.
1. Inspect belt cover for proper
installation.
2. Inspect/replace belt with a new
one.
3. Realign/replace shaft, pulley,
setscrew and key as required.
Teeth are ripping from the blade. 1. The feed pressure is too heavy
and the blade speed is too slow;
or the blade TPI is too coarse for
the workpiece.
2. The workpiece is vibrating in
the vise.
3. The blade gullets are loading
up with chips.
1. Decrease the feed pressure or
choose the proper blade.
2. Re-clamp the workpiece in the
vise and use a jig if required.
3. Use a coarser-tooth blade.
Inaccurate cut squaring 1. Excessive cutting pressure.
2. Incorrect blade tooth in rela-
tion to the workpiece.
3. Incorrect adjustment of the
sliding blade guide.
4. Incorrect cutting speed in rela-
tion to work piece.
5. The workpiece is wrongly posi-
tioned in the vise.
6. Poor blade tension.
1. Decrease the cutting pressure.
2. Choose the proper blade for
the given workpiece.
3. Check the blade guide adjust-
ment.
4. Adjust to the correct cutting
speed.
5. Check workpiece positioning
and clamping in the vise.
6. Check the blade tension.
The blade tends to protrude from
the guide.
1. Excessive blade tension.
2. Incorrect eccentric blade guide
adjustment.
3. The blade slips on the pulleys,
due to the oil or grease required
for cutting operations.
1. Check blade tension.
2. Check eccentric blade guide
adjustment.
3. Never use any type of lubri-
cant or coolant for the cutting
operations; specialized personnel
should check and replace the pul-
leys if necessary.
TROUBLESHOOTING

Wen 3970 Specifications

General

Brand	Wen
Model	3970
Category	Saw
Language	English