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
Descriptions
GENERAL
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 unit.
COMPRESSION CYCLE
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 dimin-
ish in size. The moving scroll is prevent-
ed from rotating during this process so
the 180
o
phase relationship of the
scrolls is maintained. The compressor’s
inlet is at the outer boundary of the
scrolls. The compressed gas is dis-
charged through the outlet at the cen-
ter of the fixed scroll so no valves are
needed.
Scroll Tankmount/Basemount Air Compressors
TIP SEAL
The tip seal on the scroll compressor is
self-lubricated and allows the unit to
operate efficiently without oil and
expensive filtration. The tip seal should
be replaced every 10,000 hours of
operation.
BEARINGS
The bearings on the scroll compressor
are regreaseable to allow extended
compressor life. Service should be per-
formed every 10,000 hours of opera-
tion.
DRY TYPE INLET FILTER
(P/N 91348550)
Order P/N 91348550 for both the 3 HP
and 5HP units. Change every 2,500
hours or more often in dirty locations.
HOURMETER
The hourmeter on the scroll compres-
sor indicates the actual number of
hours the unit has been in operation.
The hourmeter is also used to deter-
mine maintenance and service timing.
An hourmeter must be installed
with every Scroll compressor
.
CONDENSATE DRAIN VALVE
A condensate drain valve must be
installed on any tank used to allow
removal of the liquid which will collect
during compressor operation.
Drain liquid from
tank daily.
!
NOTICE
IN258902AV 9/06
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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, you must fit
the air compressor/pump with
suitable in-line safety and alarm
equipment. This additional equip-
ment is necessary to properly filter
and purify the air to meet minimal
specifications for Grade D breath-
ing as described in Compressed
Gas Association Commodity
Specification G 7.1 - 1966, OSHA 29
CFR 1910. 134, 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, EXIST-
ING WARRANTIES ARE VOIDED,
AND POWEREX DISCLAIMS ANY
LIABILITY WHATSOEVER FOR
ANY LOSS, PERSONAL INJURY OR
DAMAGE.
!
DANGER
