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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 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.
Outlet Tube
Pressure
Relief Tube
Nuts
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.
A15256
6.
Nuts
7.
Check
Valve
8.
9.
10. Replace the outlet tube and
11. Perform the Break-in Procedure.
22- ENG
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.
Screwdriver
In open
position
nothing is
visible.
In closed position
disc is visible.
Clean or replace the check
valve. A solvent, such as paint or
varnish remover can be used to
clean the check valve.
Apply sealant to the check valve
threads. Reinstall the check valve
(turn clockwise).
Replace the pressure release
tube. Tighten nuts.
tighten nuts.
See "Break-in Procedure" in the
Operation section.
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