Filter
Top Products
17
TROUBLE-SHOOTING (3520A Lathe)
PROBLEM POSSIBLE CAUSE SOLUTION
Excessive vibration. 1. Defective spindle bearings. 1. Replace bearings.
2. Worm or defective belt. 2. Replace belt.
3. Defective motor. 3. Replace motor.
4. Workpiece warped, out-of-round, 4. Correct problem by planing
has major flaw, or was improperly or sawing, or scrap workpiece.
prepared for turning.
Motor or spindle stalls. 1. Excessive cut. 1. Reduce cut depth.
2. Defective motor. 2. Replace motor.
3. Excessive belt wear. 3. Replace belt.
4. Improper belt adjustment. 4. Readjust belt.
Motor overheats. 1. Motor overloaded. 1. Correct overload condition,
such as reducing cut depth.
2. Improper cooling on motor. 2. Clean sawdust from fan and
duct areas of motor.
Motor starts slowly or 1. Low voltage. 1. Request voltage check from
fails to come up to speed. power company and correct
low voltage condition.
2. Defective motor. 2. Replace motor.
Motor fails to develop full 1. Power line overloaded. 1. Correct overload condition.
power. 2. Undersize wires in supply system. 2. Increase supply wire size.
3. Low voltage. 3. Request voltage check from
power company and correct
low voltage condition.
4. Defective motor. 4. Replace motor.
Tools tend to grab or dig in. 1. Dull tools. 1. Sharpen tools.
2. Tool support set too low. 2. Reposition tool support height.
3. Tool support set too far from workpiece. 3. Reposition tool support closer
to workpiece.
4. Improper tool being used. 4. Use correct tool for operation.
Lathe runs at one speed. 1. Electronic AC inverter defective, not 1. Replace electronic AC inverter,
programmed properly or loose wiring. reprogram, or check wiring.
Headstock moves when 1. Excessive pressure being applied by 1. Slide headstock down the left
applying pressure with tailstock (more than 500 lbs. of force) side of the lathe against the
tailstock. NOTE: The screw action of the tailstock stop then apply pressure to
is capable of applying excessive pressure workpiece with tailstock.
to workpiece and headstock. Apply only
sufficient force by tailstock to hold work-
piece securely in place. Excessive
pressure can cause damage to machine.