Powerex PMAC Instructions Manual

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
property damage! Retain instructions for future reference.
Description
General
The Powerex Oil-less Rotary Scroll Air Compressor has advanced
scroll compressor technology through the development of a
completely oil-less unit. The Powerex Scroll Compressor offers a
dynamically balanced air end which insures vibration free operation.
No oil separation, oil filtration, or inlet valves are required on the
Powerex scroll unit.
Compression Cycle
The Powerex oil-less 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 element 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° 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 rotating
during this process so the 180° phase relationship of the scrolls is
maintained. The compressor's inlet is at the outer boundary of the
scrolls. The compressed gas is discharged through the outlet at the
center of the fixed scroll so no valves are needed.
Tip Seal
The tip seal on the scroll compressor is self-lubricated and allows
the unit to operate efficiently without oil and expensive filtration.
Bearings
The bearings on the scroll compressor are regreaseable to allow
extended compressor life.
Intended Usage
This Powerex Oil-less Scroll set is intended for use as part of a system.
The compressor set provides compressed air from the oil-less scroll
pump when the electric motor is powered. The set includes the intake
air filter, pump, motor, coupling assembly, appropriate safety guards,
with the optional aftercooler, check valve, safety relief valve, and
inter connecting piping and tubing. Do not operate if the components
are missing and do not modify or remove any components without
approval from Powerex.
The Powerex module may be supplied with an intake filter installed
Powerex • 100 Mundy Memorial Drive • Mt. Juliet, TN 37122 • USA
P 1.888.769.7979 • F 513.367.3125 • www.powerexinc.com
PMAC Air Compressor shown with optional aftercooler assembly
on the pump or the set may be intended for piping to a remote filter.
Always make sure that an inlet filter is in place and has a maximum
filtration of 2 micron and that the inlet air system is not restricted.
Operating the scroll pump with a restricted inlet will result in
pump damage. Do not modify or remove the Powerex check valve
or relief valve. The relief valve will open if the set is accidentally
operated with an isolation valve closed.
Safety Guidelines
A SEPARATE SAFETY BOOKLET IS PROVIDED ALONG WITH THIS
MANUAL. READ AND UNDERSTAND THE SAFETY BOOKLET. This manual
contains information that is very important to know and understand.
This information is provided for SAFETY and to PREVENT EQUIPMENT
PROBLEMS. To help recognize this information, observe the following
symbols. MAKE SURE EVERYONE OPERATING OR SERVICING THE
COMPRESSOR READS AND UNDERSTANDS ALL THE INFORMATION
PROVIDED. The operator must install equipment in a safe location and
is responsible for following all related local work safety requirements
and regulations.
Danger indicates an imminently hazardous
situation which, if not avoided, WILL result in
death or serious injury.
Warning
situation which, if not avoided, COULD result in
death or serious injury.
Caution indicates a potentially hazardous situation
which, if not avoided, MAY result in minor or
moderate injury.
Notice indicates important information, that if not
followed, may cause damage to equipment.
NOTE: Note indicates information that requires special attention.
PMAC Air Compressor
indicates a potentially hazardous
IN598601AV • 01/2020
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