Operation Manual

22
Possible faults
Before each fault clearance
− Switch off device
− Wait for stop of saw
− Pull out power plug
 After each fault clearance, put into operation and recheck all security installations.
Fault Possible cause Removal
Machine fails to start after
switching on or switches off
during idle running
• Power failure
• Extension cable defect
• Motor or switch defect
•
Check safety fuse
• Check cable, no longer use defect cable
• Have motor or switch checked by an ap-
proved electrician or replaced by original
spare parts
Motor hums, but does not initiate
• Condenser defect
•
Condenser should be replaced by customer
service
Machine stops while cutting
• Saw band edgeless
• Feed too large
•
Replace saw band
• Allow the motor to cool off and then continue
work using less pressure
Work piece jams when pushing
forward or pulling backward
• Saw band edgeless
• The parallel stopper is not parallel to the saw
band
•
Hold the work piece firmly and switch off the
motor immediately. Then renew the saw
band.
• Readjust the parallel stopper.
Burn marks at the cut edges
• Saw band is not suitable for the work step or
edgeless
•
Replace saw band
Saw band breaks
• Wrong saw stressing
• To high load
• Wrong saw band
•
Adjust saw band stress
• Reduce pressure against the saw band.
• Wrong saw band
° thin work piece = small saw band
° thick work piece = broad saw band
Saw band contorted
• To high lateral load
•
Avoid lateral pressure on the saw band.
Saw band runs out of cutting line
or passes of
• Saw band does not run centrally on the upper
band saw roll
•
Adjust incline of the upper band saw roll
Saw vibrates
• Insufficient fixation
• Saw table loose
• Fixation screws of motor lose
•
Fix saw on suitable ground
• Adjust and fix saw table
• Fasten fixation screws
Sawdust exit blocked
• No extraction system connected
• Extraction power to weak
•
Switch off saw, remove sawdust and connect
extraction system
• Switch off saw, remove sawdust and in-
crease extraction power (air speeds ≥ 20
m/sec on suction socket of sawdust.
Saw band does not move alt-
hough motor is running
• Drive belt lose
• Drive belt defect
•
Clamp drive belt
•
Replace drive belt