Model G0819 (Mfd. Since 09/16)
-41-
Symptom
Possible Cause
Possible Solution
Machine slows
when operating.
1. Feed rate too high.
2. Excessive depth of cut.
1. Reduce feed rate (
Page 31
).
2. Reduce depth of cut (
Page 30
).
Loud,
repetitious
noise coming
from machine.
1. Pulley set screws or keys are missing or
loose.
2. Motor fan rubbing on fan cover.
3. V-belt(s) is defective.
1. Inspect pulley keys and set screws. Replace or tighten
if necessary.
2. Fix/replace fan cover; replace loose/damaged fan.
3. Replace V-belt(s) (
Page 54
).
Machine is
loud, overheats
or bogs
down during
operation.
1. Excessive depth of cut.
2. Sanding belt worn/clogged.
1. Decrease depth of cut (
Page 30
).
2. Clean/replace sanding belt (
Pages
26 & 39
).
Rounded
workpiece
edges.
1. Excessive depth of cut.
1. Reduce depth of cut (
Page 30
).
Uneven
thickness from
left to right of
board.
1. Feed table not parallel to upper frame.
2. Conveyor belt worn.
3. Sanding belt worn unevenly.
1. Adjust feed table (
Page 50
).
2. Replace conveyor belt (
Page 58
).
3. Feed workpieces across sanding belt, not just on one
side.
Workpiece slips
on conveyor
belt.
1. Pressure rollers set too high.
2. Dirty conveyor belt.
3. Conveyor belt worn.
1. Lower pressure rollers (
Page 51).
2. Clean conveyor belt (
Page 58).
3. Replace conveyor belt (
Page 58).
Grooves down
length of
workpiece.
1. Pressure rollers dirty/damaged.
2. Platen set too low.
1. Clean/repair/replace pressure rollers.
2. Raise platen to reduce pressure (
Page 27
).
Snake-shaped
marks on
workpiece.
1. Sanding belt dirty/damaged.
2. Pressure rollers dirty/damaged.
1. Clean/replace sanding belt (
Pages 39
&
26
).
2. Clean/repair pressure rollers.
Lines across
width of
workpiece.
1. Sanding belt seam open/damaged.
2. Platen set too low.
1. Replace sanding belt (
Page 26
).
2. Raise platen to reduce pressure (
Page 27
).
Glossy spots
or streaks on
workpiece.
1. Worn sanding belt.
2. Rear pressure roller too low.
3. Graphite pad or felt pad worn/damaged.
4. Platen set too low.
5. Using amp load meter to establish material
removal amount.
1. Replace sanding belt (
Page 26).
2. Raise rear pressure roller (
Page 51
and heed warning
in
Pressure Roller section
Page 51
).
3. Replace graphite pad or felt pad (
Page 44
).
4. Raise platen to reduce pressure (
Page 27
).
5. Use other methods to establish material removal
amount.
Sanding belt
clogs quickly.
1. Sanding belt grit too small for particular job.
2. Excessive depth of cut.
3. Wood is too moist.
4. Using amp load meter to establish material
removal amount.
1. Replace with coarser grit sanding belt (
Page
25).
2. Reduce depth of cut (
Page 30
).
3. Allow wood to dry to below 20% moisture content.
4. Use other methods to establish material removal
amount.
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
(
Page 20).
2. Inspect all hoses and connections for leaking air; use
a water/soap mixture on suspected area to detect
bubbles.
Sanding belt
runs off to one
side, stopping
the sander.
1. Airflow adjustment knob closed.
2. Belt tracking incorrect.
3. Electronic eye or mirror dirty; pulse jets
incorrectly positioned.
1. Turn valve all the way out, then back in 3
1
⁄
2
" turns.
2. Adjust belt tracking (
Page 56
).
3. Clean electronic eye, mirror; adjust pulse jet
positions (
Page 55
).
Poor, non-
aggressive
sanding results.
1. Sanding belt worn/clogged.
2. Sanding belt grit too fine for particular job.
1. Clean/replace sanding belt (
Pages 26 & 39).
2. Replace with coarser grit.
Operation
Summary of Contents for G0819
Page 84: ......
