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AH maintenance
and repair
operations
not misted must be
performed
by Trained Service
Technician,
Risk of Unsafe
Operation,
Unit
cycles automatically
when power
is on, When serv{cing,
you may
be exposed
to vomtage sources,
compressed
air, or moving parts,
Before servicing
unit unplug or
d}sconnect
e_ectrica_ supply to
the a}r compressor,
bmeed tank
of pressure,
and allow the a}r
compressor
to cool
To Replace
or Clean
Check
Valve
1,
Release alI air pressure from air
tank. See "To Drain Tank" in the
"Maintenance"
section.
2.
Set the On/Auto/Off
lever to "Off"
and unptug unit.
3.
Using an adjustable wrench,
loosen outlet tube nut at air tank
and pump. Carefully move outlet
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.
Screwdriver
position
nothing is
visibBe,
In cBosed position
disc is vieibie.
7.
Clean or replace the check
valve. A solvent, such as paint or
varnish remover can be used to
clean the check valve.
8.
Appty 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.
Using an adiustable wrench,
loosen pressure relief tube nut
at air tank and pressure switch.
Carefully move pressure relief
tube away from check valve.
17- ENG
A09711
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