Use and Care Manual

19
11.0 Troubleshooting HVBS-712V/712DV Band Saw
11.1 Mechanical and electrical problems
Symptom Possible Cause Correction *
Motor will not start. No incoming power. Check plug connection. If satisfactory,
check breaker or fuse.
Low voltage. Check power line for proper voltage.
Open circuit in motor or loose
connection.
Inspect all lead connections on motor for
loose or open connections.
Motor will not start, or
motor stalls, resulting
in blown fuse or tripped
breaker.
Too many tools running on one
circuit.
Reduce number of tools connected to
circuit.
Short circuit in line cord or plug. Inspect cord or plug for damaged insulation
and shorted wires.
Short circuit in motor or loose
connections.
Inspect all connections on motor for loose
or shorted terminals or worn insulation.
Incorrect fuses or circuit breakers in
power line.
Install correct fuses or circuit breakers.
Motor overheats. Motor overloaded. Reduce load on motor: increase speed or
decrease feed pressure.
Air circulation through motor is
restricted.
Clean motor fan with compressed air to
restore normal air circulation.
Machine slows when
operating.
Excessive feed pressure. Adjust spring tension to reduce feed
pressure, or increase speed using belt
adjustment.
Belt loose. Tighten belt.
Loud, repetitive noise
coming from machine.
Pulley setscrews are missing or
loose.
Inspect setscrews. Replace or tighten if
necessary.
Motor fan is hitting the cover. Tighten fan or shim cover.
V-belt is defective. Replace V-belt.
Excessive vibrations. Base on uneven surface. Move to level surface.
Saw blade has cracks. Replace blade immediately.
Too heavy a cut. Reduce feed rate and blade speed.
No coolant flow. Coolant level low. Add coolant to tank.
Filter screen clogged. Clean filter screen.
Pump motor faulty. Replace pump.
* WARNING: Some corrections may require a qualified electrician.
11.2 Operational problems
Symptom Possible Cause Correction
Cuts not square. Blade not square to vise/material. Adjust vise square to blade.
Blade surface not perpendicular to
table.
Adjust blade guides until perpendicular.
Workpiece shifting in vise. Properly secure workpiece by tightening
vise handles. If irregular-shaped workpiece,
use appropriate clamping technique or jig.
Low blade tension. Increase tension.
Blade guides out of adjustment. Adjust blade guides.