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The Powerex Oilless Rotary Scroll Air
Compressor has advanced scroll com-
pressor technology through the devel-
opment of a completely oilless unit.
The Powerex Scroll Compressor offers a
dynamically balanced air end which
insures vibration-free operation. The
rotary design permits a continuous
100% duty cycle. No oil separation, oil
filtration, or inlet valves are required
on the Powerex Scroll air compressor.
The Powerex oilless rotary scroll air
compressor is based on the theory of
scroll compression. A scroll is a free
standing, intricate spiral bounded on
one side by a solid, flat plane or base. A
scroll set, the basic compression ele-
ment of a scroll compressor, is made up
of two identical spirals which form
right and left hand parts. One of these
scroll components is indexed or phased
180
o
with respect to the other so the
scrolls can mesh.
Crescent-shaped gas pockets are
formed and bounded by the spirals and
the base plate of both scrolls. As the
moving scroll is orbited around the
fixed scroll, the pockets formed by the
meshed scrolls follow the spiral toward
the center and diminish in size. The
moving scroll is prevented from rotat-
ing during this process so the 180
o
phase relationship of the scrolls is main-
tained. The compressor’s inlet is at the
outer boundary of the scrolls. The com-
pressed gas is discharged through the
outlet at the center of the fixed scroll
so no valves are needed.
Description
Please read and save these instructions. Read carefully before attempting to assemble, install, operate or maintain the product described.
Protect yourself and others by observing all safety information. Failure to comply with instructions could result in personal injury and/or prop-
erty damage! Retain instructions for future reference.
Powerex • 150 Production Drive • Harrison, OH 45030 • USA
Scroll Air Compressor Service and Maintenance
Breathable Air Warning
This compressor/pump is not equipped
and should not be used “as is” to supply
breathing quality air. For any application
of air for human consumption, the air
compressor/pump will need to be fitted
with suitable in-line safety and alarm
equipment. This additional equipment is
necessary to properly filter and purify
the air to meet minimal specifications
for Grade D breathing as described in
Compressed Gas Association Commodity
Specification for air, OSHA, ANSI and/or
Canadian Standards Associations (CSA).
DISCLAIMER OF WARRANTIES
In the event the compressor is used for
the purpose of breathing air application
and proper in-line safety and alarm
equipment is not simultaneously used,
existing warranties shall be voided, and
Powerex disclaims any liability whatso-
ever for any loss, personal injury or
damage.
!
DANGER
IN259803AV 10/05
The inlet filter on the scroll compressor
assures 99% particulate free air is
admitted to the unit. Order P/N
IP032901AV for both the 3 HP and 5HP
units. Change every 2,500 hours or
more often in dirty locations.
1. Remove filter cover by releasing
spring clamps (See Figure 1).
2. Remove wing screw.
Do not attempt to
clean filter. This
filter requires replacement and is to be
replaced when contaminated.
3. Clean inlet plate, filter cover and six
(6) silencer tubes using an air gun or
by wiping dry with a cloth.
4. Install new inlet filter (Part Number
IP032901AV) and reassemble cover.
See Service and Maintenance Video
for Visual and Audio Instructions
(Part Number IP633900AV).
!
CAUTION
GENERAL
Dry Type Inlet Filter
2500 HOURS - MAINTENANCE
Figure 1 Inlet Filter and Cover Assembly
Inlet Plate
Silencer Tubes
Filter Cover