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UNIT CYCLES AUTOMATICALLY WHEN POWER IS ON. WHEN DOING MAINTENANCE, YOU MAY BE
EXPOSED TO VOLTAGE SOURCES, COMPRESSED AIR OR MOVING PARTS. PERSONAL INJURIES
CAN OCCUR. BEFORE PERFORMING ANY MAINTENANCE OR REPAIR, UNPLUG THE COMPRES-
SOR AND BLEED OFF ALL AIR PRESSURE.
ALL MAINTENANCE AND REPAIR OPERATIONS NOT LISTED MUST BE DONE BY A QUALIFIED SERVICE TECHNICIAN.
Check Valve - Replacement
Before servicing:
• Unplug or disconnect electrical supply to
compressor.
• Bleed tank of pressure.
• Allow compressor to cool.
1. Release all air pressure from air tank and unplug
outfit.
2. Loosen hose clamp and remove hose from 90° elbow
hose barb fitting.
3. Unscrew 90° elbow hose barb fitting from check
valve.
4. Unscrew the check valve (turn counterclockwise)
using a socket wrench.
5. Check that the valve disc moves freely inside the
check valve and that the spring holds the disc in the
upper, closed position. The check valve may be
cleaned with a solvent, such as paint and varnish
remover.
6. Apply sealant to the check valve threads. Reinstall
the check valve (turn clockwise).
7. Replace 90° elbow hose barb fitting into check valve.
8. Attach hose to 90° elbow hose barb fitting and tighten
the clamp.
90° Elbow
Clamp
Hose Barb
Fitting
Hose
D20419
Rev. 0
2/22/00
All manuals and user guides at all-guides.com
MAINTENANCE
Safety Valve - Inspection
Storage
Before you store the air compressor, make sure you do
the following:
1. Review the "Maintenance" and "Operating Proce-
2. Protect the electrical cord and air hose from damage
Store the air compressor in a clean and dry location.
Check
Valve
10 — ENG
If the safety valve does not work properly,
over-pressurization may occur, causing air
tank rupture or an explosion. Before
starting compressor, pull the ring on the
safety valve to make sure that the safety
valve operates freely. If the valve is stuck or
does not operate smoothly, it must be
replaced with the same type of valve.
dures" sections and perform maintenance as neces-
sary. Be sure to drain water from the air tank.
(such as being stepped on or run over). Wind them
loosely around the compressor handle.
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