Model G9983 (Mfg. Since 8/09)
-29-
symptom
possible cause
possible solution
lines across width
of workpiece.
1. sanding belt seam is open or damaged.
1. repair or replace sanding belt.
More material is
removed from the
end of workpiece
than the length
(snipe).
1. Workpiece is not supported as it comes out
of sander.
2. pressure rollers not set correctly.
1. hold workpiece up with your hands as it comes out,
or set up an outfeed table for your workpiece after it
comes out.
2. adjust the pressure rollers.
glossy spots
or streaks on
workpiece.
1. Worn sanding belt.
2. rear pressure roller too low.
1. replace sanding belt.
2. raise rear pressure roller.
sanding belt clogs
quickly.
1. sanding belt grit too small for particular job.
2. excessive depth of cut.
3. Wood is too moist.
1. replace with a coarser grit sanding belt.
2. reduce depth of cut.
3. allow wood to dry out.
sanding belt
does not tension
correctly; rollers slip
under belt.
1. low air pressure.
2. air leaks in system.
1. adjust air pressure to 75 psi at primary regulator.
2. inspect all hoses and connections for leaking air;
use water on suspected area to detect bubbles.
sanding belt runs
off to one side,
stopping the sander.
1. air eye fork clogged.
2. oscillation return valve closed.
3. oscillation timing incorrect.
1. Clean the intake hole on the air eye fork.
2. open valve.
3. adjust oscillation timing.
sanding belt will not
start.
1. sanding belt is not tensioned.
2. limit switches engaged.
3. emergency stop plate engaged.
1. tension sanding belt.
2. Center sanding belt so it is not touching the limit
switches.
3. Make sure emergency stop switch is released.
poor, non-
aggressive sanding
results.
1. platen adjusted incorrectly, above bottom
surface level of lower sanding rollers.
2. sanding belt loaded with sawdust.
3. sanding belt worn out.
1. adjust platen on the same plane as, or lower than,
bottom surface level of lower rollers.
2. Clean sanding belt to unload sawdust.
3. replace sanding belt with a new one.
Conveyor belt not
tracking in center.
1. Conveyor rollers moved out of adjustment.
1. re-adjust conveyor rollers.
Conveyor belt
slipping.
1. Conveyor rollers have incorrect tension.
2. Conveyor rollers contaminated with dirt or
dust.
1. adjust conveyor rollers to increase tension.
2. Clean conveyor rollers.
emergency brake
stops slow.
1. air pressure incorrect.
2. air leak in system.
3. brake rotor contaminated with oil.
4. brake pads worn out.
1. adjust air pressure to 75 psi.
2. Find and fix air leaks.
3. Clean brake rotor with automotive brake parts
cleaner.
4. replace brake pads.
grinding noise when
braking.
1. brakes severely worn out.
1. replace brake pads, have rotor turned (possibly
replaced).
Содержание G9983
Страница 60: ......
