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10.2 Coolant level
Maintain coolant level. Low coolant level can cause
foaming and high blade temperatures. Replace dirty
coolant; dirty or weak coolant can clog the pump,
cause crooked cuts, a low cutting rate and/or
permanent blade damage. To fill tank, pour coolant
into hole through strainer cup to about 80% of full
capacity. Full capacity is 9 liters (2.5 gal). Follow
coolant manufacturer’s instructions for proper use
and disposal.
10.3 Additional servicing
Any additional servicing on the band saw should be
performed by an authorized service representative.
11.0 Troubleshooting HVBS-712/712D 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.
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