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21- ENG
A10260
SERVICE AND ADJUSTMENTS
To Replace or Clean Check Valve
1. Release all air pressure from air tank. See "To Drain Tank" in the
"Maintenance" section.
2. Unplug air compressor.
3. Using an adjustable wrench loosen
outlet tube nut at air tank and pump.
Carefully move outlet tube up away
from check valve.
4. Using an adjustable wrench loosen
pressure relief tube nut at air tank
and pressure switch. Carefully move
pressure relief tube away from check
valve.
5. Unscrew the check valve (turn
counterclockwise) using a 7/8" open
end wrench.
Note the orientation for
reassembly.
6. Using a screwdriver, carefully push the
valve disc up and down.
NOTE: The
valve disc should move freely up
and down on a spring which holds
the valve disc in the closed position,
if not the check valve needs to be
cleaned or replaced.
7. Clean or replace the check valve.
A solvent, such as paint or varnish
remover can be used to clean the
check valve.
8. Apply sealant to the check valve
threads. Reinstall the check valve (turn clockwise).
9. Replace the pressure release tube. Tighten nuts.
10. Replace the outlet tube and tighten nuts.
11. Perform the Break-in Procedure. See "Break-in Procedure" in the
"Operation" section.
In closed position
disc is visible.
In open
position
nothing is
visible.
Screwdriver
Risk of Unsafe Operation. Unit cycles automatically when
power is on. When servicing, you may be exposed to
voltage sources, compressed air, or moving parts. Before servicing unit
unplug or disconnect electrical supply to the air compressor, bleed tank of
pressure, and allow the air compressor to cool.
ALL MAINTENANCE AND REPAIR OPERATIONS NOT LISTED MUST BE
PERFORMED BY TRAINED SERVICE TECHNICIAN.
Outlet Tube
Nuts
Nuts
Pressure
Relief Tube
Check
Valve