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.
Set the On/Auto/Off
lever to
"OFF" and unplug unit.
3.
Using an adjustable wrench,
loosen outlet tube nut at air tank
and pump. Carefully move outlet
4,
tube away from check valve.
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.
6,
Unscrew the check valve (turn
counterclockwise) using a 7/8"
open end wrench. Note the
orientation
for reassembly.
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.
)pen
position
nothing is
visible.
In 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.
D29761
18- ENG