Grizzly G0866 Owner's Manual page 49

Operation (Cont.)
Symptom Possible Cause
Sanding belt 1. Sanding belt grit too fine for particular job.
clogs quickly.
2. Excessive depth of cut.
3. Wood is too moist.
4. Using amp load meter to establish material
removal amount.
Sanding 1. Low air pressure.
belt does
not tension
2. Air leaks in system.
correctly; rollers
slip under belt.
3. Air cylinder shaft worn/damaged.
Sanding belt 1. Power connections wired out of phase.
runs off to one
2. Airflow adjustment knob closed.
side, stopping
3. Belt tracking incorrect.
sander.
4. Air fork gap/air lines clogged.
5. Solenoid valve/air manifold at fault.
Poor, non- 1. Sanding belt worn/clogged.
aggressive
2. Sanding belt grit too fine for particular job.
sanding results.
Sanding belt 1. No air pressure to sander.
will not start,
2. Airflow adjustment valve closed.
but conveyor
3. Limit switches engaged.
will.
4. Sanding belt not tensioned.
Conveyor belt 1. Conveyor belt moved out of adjustment.
not tracking in
center.
Conveyor belt 1. Conveyor belt has incorrect tension.
slipping.
2. Conveyor rollers contaminated with dirt or
dust.
Emergency 1. Low air pressure.
brake stops
2. Air leaks in system.
slowly.
3. Brake rotor contaminated with oil.
4. Brake pads worn.
Grinding noise 1. Brake pads severely worn.
when braking.
Air leaking from 1. Air release sound is normal.
sander.
2. Water filter/trap drain cock left open.
3. Air line ruptured or air leaking at a connection
point.
Model G0866 (Mfd. Since 11/18)
Possible Solution
1. Replace with coarser grit sanding belt (Page 35).
2. Reduce depth of cut.
3. Allow wood to dry to below 20% moisture content.
4. Use alternate methods to establish material removal
amount (Page 34).
1. Adjust air pressure to 75 PSI at primary regulator
(Page 24).
2. Inspect all hoses and connections for leaking air; use
a water/soap mixture on suspected area to detect
bubbles.
3. Repair/replace air cylinder.
1. Correct phase polarity (Page 28).
2. Turn valve all the way out, then back in 3
3. Adjust belt tracking (Page 48).
4. Clean air fork gap/air lines.
5. Test/repair/replace.
1. Clean/replace sanding belt (Page 35 & 44).
2. Replace with coarser grit.
1. Connect sander to compressed air system (Page 63).
2. Open airflow adjustment valve.
3. Center sanding belt so it is not touching limit switches.
4. Tension sanding belt (Page 35).
1. Adjust conveyor adjustment bolts (Page 62).
1. Adjust conveyor belt tension (Page 62).
2. Clean conveyor rollers.
1. Adjust incoming air pressure to 75 PSI (Page 24).
2. Inspect all hoses and connections for leaking air; use
water on suspected area to detect bubbles.
3. Clean brake rotor with automotive brake parts cleaner.
4. Replace brake pads (Page 52).
1. Replace brake pads (Page 52), have rotor turned/
trued by a machine shop. Replace rotor.
1. Unless there is clear evidence of an air leak or perfor-
mance issue with belt oscillation or braking time, take
no action. Air release sound is normal.
2. Ensure water filter/trap drain cock is tight.
3. Locate source of sound and determine likely cause
based on visual evidence.
1 ⁄ " turns.
2
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