Page 114 - Med Plaza and Cancer Center

"Oil-Less” Medical Air Medical Systems

1.0 General Information (continued)

1.2 SPC (Single Point Connection) Basemount Standard Components

System Design
®
The SPC (Single Point Connection) LifeLine Medical Air system consists of compressor modules (duplexed
or multiplexed), and a dryer/control module with an air receiver. Each module has a maximum base width of
34.5" (88 cm), and is fully compliant with NFPA 99. The modules are attached as one unit with single point
connections for the intake, discharge, and electrical.

Compressor Module
The compressor is a continuous duty rated "oil-less" type with permanently lubricated, sealed bearings. The
design is single stage, air-cooled, reciprocating type with corrosion resistant reed type valves with stainless
steel reeds. Both the compression rings and rider rings are made from a long life, fluororesin material designed
for continuous duty operation. The crankshaft is constructed of a durable nodular graphite cast iron and is fully
supported on both ends by heavy duty ball bearings permanently lubricated and sealed. The crankcase is
constructed of gray cast iron, not aluminum. Maximum heat dissipation is achieved through cast aluminum
alloy cylinders treated for optimum corrosion and wear resistance. Cylinder sleeves are not required.
Additionally, an insulated "heat cut" piston pin minimizes heat transmission from the piston wall to the piston
pin needle bearing. The connecting rod is of a one-piece design for maximum reliability.

Compressor Drive and Motor
The compressor is v-belt driven through a combination flywheel/sheave and steel motor sheave with tapered
bushing and protected by an OSHA approved, totally enclosed beltguard. A sliding motor mounting base that
is fully adjustable through twin adjusting screws achieves belt tensioning. The motor is a NEMA high
efficiency type, open dripproof, 1800 RPM, with 1.15 service factor suitable for 208 or 230/460V electrical
service.

Intake Piping
Each compressor has a piped intake manifold with one "hospital type" inlet air filter with threaded opening for
remote intake connection. The inlet filter housing is isolated from the intake manifold by a braided 304
stainless steel flex connector. The inlet filter removes dust from the incoming air through cyclonic action and
through an element.

Discharge Piping
Each compressor module is equipped with an integral air-cooled aftercooler, designed for a maximum
o
approach temperature of 15 F, complete with moisture separator and timed automatic solenoid drain valve. A
manual drain valve bypass is included. Each cylinder head is equipped with a wired high discharge air
temperature shutdown switch. The compressor discharge line includes a flex connector, safety relief valve, and
check valve. The discharge air piping is made of ASTM B-819 copper tubing, brass, and stainless steel. The
discharge flex connector is braided 304 stainless steel.

Isolation System
The compressor and motor are fully isolated from the main compressor module base by means of a four point,
heavy duty, spring isolation system for a minimum of 95% isolation efficiency.

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