12
4
Troubleshooting
If this guide doesn’t fix your problem please contact the company where you purchased the sander. If
you are unable to contact them or you need additional help, please contact Elston Manufacturing at:
1-800-845-1385.
What is wrong with the sander?
A.
Unit fails to drop grit when switch is pushed
B.
Fuse supplying power to the unit is repeatedly blown
Problem A: Unit fails to drop grit when switch is pushed
Cause: Grit is Low
If the hole in the bottom of the grit tank is visible than the grit level is too low and the sander needs to be
refilled. If the grit level is not low, check that the sander is receiving power.
Cause: No Power to Unit
Make sure that the ignition is in the correct position(s) for the sander to receive power.
When the switch in the dash is pressed, the solenoid in the sander will open with a distinct click that
should be audible when the vehicle is not running. If neither side clicks, check that the fuse or circuit
breaker supplying power to the sander is not blown. If the fuse blows again the next time you press the
switch see problem B below. If the fuse is not blown check the wiring supplying power to the sander for
bad connections and the solenoid for continuity.
Cause: Operating Unit Not Working Correctly
If a click is not heard and the unit is receiving power (typically only one side will not click), remove the
boots on the sanders and check if the bellows and valve are moving when the dash switch is pressed. If
they do not move freely, remove the cap on the operating unit and inspect the parts inside to ensure they
move freely.
Cause: Grit Not Flowing Correctly
If the sander is opening with a click, check that the grit in the tanks moves freely when disturbed with a
rod. If it does not, the grit will need to be removed from the sander. Grit can be removed most easily by
removing the six bolts attaching the operating unit to the bottom of the sander and prodding the
remaining grit. Note that frozen grit will need to be thawed before removal. As you remove the grit,
inspection of the grit will show why it failed to flow correctly. If the grit flows out fine once the
operating unit is removed this usually indicates that the grit contains some material that is too large to
flow easily through the sanders. Moisture limited to around the outlet to the grit tank typically indicates
a poor seal of the gasket between the tank and the guard on the bottom on the tank. More widespread
moisture in the grit indicates the grit was too moist when placed in the sander or an extended loss of the
sander cap let moisture in. Grit that is compacted will be dry and flow fine when removed from the
sander but be resistant to disturbance while inside the tank.
Once the grit has been removed from the sander, take care when reinstalling the operating unit to make
sure the gasket between the guard and the tank seals well. Replace any damaged gaskets. It appears there
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