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ALL SERVICE AND REPAIR
OPERATIONS NOT DESCRIBED
IN
THIS MANUAL MUST BE
PERFORMED
BY A 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 Air tank" in
the Maintenance
section.
2.
Disconnect
electrical supply to
the air compressor
3.
Using an adjustable wrench,
loosen outlet tube nut at air tank
and pump. Carefully move outlet
tube 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 it in the
closed position; if valve disc is
not moving freely the check valve
needs to be cleaned or replaced.
open
position
nothing is
visible.
tn closed position
disc is visible.
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.
D30091
20_ ENG
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