Scroll Medical & Laboratory Compressed Air Systems
Powerex
•
150 Production Drive
•
Harrison, OH 45030
•
USA
P 1.888.769.7979
•
F 513.367.3125
•
www.powerexinc.com
IN907800AV
•
08/2018
Page 2 of 40
Specifications (Continued)
HP
Air End
Discharge Pressure (PSIG)
Air Delivery
(SCFM)
3
SLAE03EB
95-115 (125-145 optional)
8.8 @ 100 PSIG
7.5 @ 145 PSIG
5
SLAE05E
95-115 (125-145 optional)
15.2 @ 100 PSIG
5
SLAE05EHP
95-115 (125-145 optional)
12.5 @ 100 PSIG
NOTE:
For system electrical information, see wiring diagram
shipped with unit.
Compressor Performance (per basemount)
Breathable Air Warning
This unit 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 inline 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 ARE VOID, AND POWEREX DISCLAIMS
ANY LIABILITY WHATSOEVER FOR ANY LOSS, PERSONAL INJURY
OR DAMAGE.
For Laboratory Systems
Components
Powerex open scroll systems are designed to supply continuous oil-
free air by using the most advanced scroll technology.
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. Each compressor
shall be belt driven oil-less rotary scroll single stage, air-cooled
construction with absolutely no oil needed for operation. Direct drive
compressors shall not be used. The rotary design shall not require any
inlet or exhaust valves and shall be rated for 100% continuous duty.
Systems consist of multiple compressor pumps that are automatically
controlled and alternated to equalize usage and wear. Medical
systems have one or more pumps designated as the reserve and their
output is not utilized for normal system capacity ratings.
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 that the 180° phase relationship of the scrolls
is maintained. The compressor’s inlet is at the outer boundary of the
scrolls. The entering gas is trapped in two completely opposite gas
pockets and compressed as the pockets move toward the center. The
compressed gas is discharged through the outlet at the center of the
fixed scroll so no valves are needed.
Compressor systems are fitted with single point connection intake
manifolds. For medical systems the manifold must be connected to
air intake piping located as specified in NFPA99. Lab systems may
utilize room air for the intake. Particle filtration is provided by the
intake filter assemblies in each branch of the compressor system.
When remote intake systems take in humid warm air from outdoors,
and route it through air-conditioned buildings, water will condense in
the intake piping. NOTICE: Water will destroy the compressor pump
if it is ingested. The air filters will not stop water. Water trapping drip
legs must be designed, installed and maintained by the responsible
parties. The intake system is also equipped with isolation valves
allowing the line to be closed if a branch is opened for service. The
ball valve handles have been removed and shipped separately to help
avoid accidental closure of the valves when the system is running.
NOTICE Running the pumps with the intake valve closed will damage
the pumps. Powerex recommends that the system be locked out if
the valve is closed.
Each compressor pump is fitted with flexible connections on the
intake and exhaust side. The compressed air from each pump is
monitored by a temperature switch that will work with the controls
to shut down the system if the air temperature exceeds design limits.
