Troubleshooting - KOBE SBD370 Operator's Manual

KBE-271-4140K_Instructions.qxd 01/02/2011
KOBE

TROUBLESHOOTING

I N D U S T R I A L
POWER TOOLS
Repairs must be performed in a dirt-free environment by a qualified person who is familiar with this type
of equipment.
FAULT
POSSIBLE CAUSE
Sanding grains easily rub off
1. Incorrect storage.
belt/disc. 2. Belt/disc has been
damaged or folded.
Deep sanding grooves or 1. Sanding Belt grit is too
scars in the workpiece. coarse.
2. Workpiece has been sanded
across the grain.
3. Too much force applied to
the workpiece.
4. Workpiece held against the
belt/disc for too long.
Sanding surface clogs 1. Too much pressure against
quickly. the belt/disc.
2. Sanding softwood.
Burns on workpiece 1. Using a sanding grit that is
too fine.
2. Using too much pressure
3. Work held still for too long.
Motor will not start. 1. Low voltage.
2. Open circuit in motor or
loose connections.
3. Blown fuse or breaker.
Motor will not start – fuses 1. Short circuit in line, cord or
or circuit breaker tripping or
plug.
blowing. 2. Short circuit in motor or
loose connections.
3. Incorrect fuses or circuit
breakers in power line.
Motor overheats
1. Motor overloaded.
2. Extension cord too long and
or insufficient gauge (weight)
Motor stalls (resulting in 1. Short circuit in motor or
blown fuses or tripped loose connections.
circuit breaker)
2. Low voltage.
3. Incorrect fuses or circuit
breakers in power line.
4. Motor overloaded
Machine slows when 1. Feed rate too great.
operating.
2. Undersized circuit or use of
undersized extension cord.
Machine vibrates 1. Incorrect motor mounting.
excessively.
2. Incorrect sanding belt tension.
3. Weak or broken tension spring.
4. Idler roller is too loose.
5. Broken/defective sanding
accessories.
Workpiece frequently gets 1. Not supporting the workpiece
pulled out of operator's against the stop.
hands. 2. Attempting to sand (unaided)
a workpiece that is too small
Workpiece lifts up from the
1. Sanding on the "up" side of
sanding disc/table. the wheel.
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SOLUTION
1. Store away from extreme heat/dry temperature.
2. Store flat – do not bend or fold.
1. Use a finer grit sanding accessory.
2. Sand with the grain of the wood.
3. Reduce pressure on workpiece.
4. Keep workpiece moving while sanding on the sanding
accessory.
1. Reduce pressure on workpiece while sanding.
2. Use different stock, different sanding accessories, or
accept that this will happen and plan on cleaning and
replacing belts/discs frequently.
1. Use a coarser grit sanding accessory
2. Reduce pressure on workpiece while sanding.
3. Do not keep workpiece in one place for too long.
1. Check power source for proper voltage.
2. Inspect all lead connections on motor for loose or
open connections.
3. Improper match between tool and circuit, fuse or
breaker.
1. Inspect cord or plug for damaged insulation and
shorted wires.
2. Inspect all connections on motor for loose or shorted
terminals and/or worn insulation.
3. Install correct fuses or circuit breakers or switch tool
to an appropriately sized circuit.
1. Reduce load on motor (pressure on object being sanded)
2. Use an extension of the appropriate gauge and
length or plug tool directly into socket outlet.
1. Inspect connections on motor for loose or shorted
terminals or worn insulations.
2. Correct low voltage conditions for example improper
extension cord length or gauge.
3. Install correct fuses or circuit breakers or plug into an
appropriate circuit, matched to an appropriate circuit
breaker.
4. Reduce the load on the motor.
1. Reduce the rate at which the workpiece is fed into
the working area of the tool.
2. Ensure circuit wires or extension cords are proper
gauge, or eliminate use of extension cords.
1. Have motor mountings inspected by a service
technician.
2. Adjust tension adjustment knob. Follow belt
tensioning/tracking instructions in this manual.
3. Have tension spring replaced by service technician.
4. Have service technician adjust idler drum.
5. Replace sanding belt/disc.
1. Use the platen (back stop) or mitre gauge to support
the workpiece.
2. Use another hand tool or jig to grasp or hold the
workpiece.
1. Sand on right side of sanding disc (as operator faces
the disc).
SAFETY INSTRUCTIONS
GENERAL OPERATING HAZARDS
Always ensure that the work area is clear of any flammable materials, liquids or gasses, because the
use of this tool may create sparks.
Keep guards in place and working properly.
Keep hands clear of sanding areas.
Ensure sanding belt runs in the proper direction. Sanding belt must travel down at the front of the
machine.
Ensure sanding belt is tracking properly so that it does not come off the pulleys.
Unplug from power supply before adjusting or servicing.
Always use only accessories that are recommended by the manufacturer for your model.
Ensure sanding belt or disc is not torn or loose.
Hold workpiece firmly while sanding.
Firmly support workpiece with mitre gauge, backstop, jig or worktable when sanding with the belt.
AVOID kickback by sanding in accordance with directional arrows. Sand on downward side of disc only!
DO NOT attempt to hold pieces of material that are too small to be safely supported by hand.
Use special jigs or hand tools.
Remove scrap pieces and other loose objects from the belt and disc tables before turning the
machine on.
When sanding metal, move the metal across the belt or disc and cool it when it becomes hot.
WARNING! Do not operate your belt & disc sander until it is completely assembled and installed
according to the instructions.
Service on these tools should only be performed by an authorized, qualified technician.
SAVE THESE INSTRUCTIONS.
WORKPLACE HAZARDS
Always comply with Health & Safety regulations.
Always be aware of power leads. Slip/Trip/Fall is a major cause of serious injury or death.
PLUG FITTING
A moulded UK 3 pin plug with ASTA/BS approval is already fitted for
your safety. If it becomes damaged, and needs replacing, cut off the
plug and prepare the wires. Use the following instructions:
a) Connect the GREEN/YELLOW earth wire to the earth terminal
marked either ' E' or with the earth symbol' '.
b) Connect the BROWN live wire to the live terminal marked ' L' or
coloured black or blue.
c) Connect the BLUE neutral wire to the neutral terminal marked ' N'
or coloured red or brown.
d) After wiring, check there are no bare wires, that all wires have been
correctly connected, that the cable external insulation extends
beyond the cable restraint and that the restraint is tight.
d) The power cord and/or the plug should only be replaced by a
qualified electrician or professional technician
Continued
UK
ONLY
Cable restraint
Yellow & Green = Earth wire
Brown = Live wire
Blue = Neutral wire
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