22- ENG
SERVICE AND ADjUSTMENTS
ALL MAINTENANCE AND REPAIR OPERATIONS NOT LISTED MUST BE
PERFORMED BY TRAINED SERVICE TECHNICIAN.
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.
TO REPLACE OR CLEAN CHECk VALVE
1. Release all air pressure from air tank. See
To
Outlet
Tube
Nut
Nuts
Check
Valve
Pressure
Relief Tube
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. 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
In closed position
disc is visible.
In open
position
nothing is
visible.
Screwdriver
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 nut.
10. Replace the outlet tube and tighten nuts.
11. Perform the Break-in Procedure. See
Break-in Procedure in the
Operation
section.
TO REPLACE REGULATOR
1. Release all air pressure from air tank.
Gauges
quick
Connect
Regulator
See
To Drain Tank in the
Maintenance
section.
2. Set the Auto/Off lever to "Off" and
unplug unit.
3. Using an adjustable wrench remove
the gauges and quick connect from
the regulator.
