Vmac G300003, Инструкция по установке, эксплуатации и обслуживанию

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VMAC
– Vehicle Mounted Air Compressors
VMAC Technical Support: 1-888-241-2289
VMAC Knowledge Base: www.kb.vmacair.com
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Operating Principles
Air Compression
The Gas Engine Driven 30 CFM Air Compressor uses a VMAC designed and
manufactured flooded lobe, rotary screw compressor. The oil filled
compressor housing contains 2 rotors. Compression occurs when air (at
normal atmospheric pressure) enters a chamber where it is trapped between
meshing rotor lobes. Cooled oil is injected into the rotors during compression
to lubricate the rotors and bearings, absorb the heat of compression, and seal
the rotor lobes to allow for efficient compression. As the rotors rotate, the
meshing lobes compress the volume of the trapped air/oil mixture before
sending it down the discharge line to be cooled and separated by the Waste
Heat Air Separation Package (WHASP) Tank.
Oil Separation and Cooling
The WHASP Tank is a 2 stage air/oil separator and oil cooler. The hot air/oil
mixture from the compressor enters the cooler at the top of the WHASP Tank
where the mixture is cooled and the majority of the oil separates from the air
and settles into the reservoir tank below the cooler (first stage separation).
The cooled oil then passes through a high pressure oil filter before being
returned to the compressor via the oil return line. The air stream then passes
through a coalescing filter where the remaining oil is removed (second stage
separation). The oil collected by the coalescing filter is returned to the
compressor via the 1/4 in PTFE scavenge tube.
A liquid to air cooler with electric fan maintains the operating temperature
which reduces the temperature of the compressed air and increases the
system
’s durability.
Minimum Pressure Check Valve
The WHASP Tank has a built-in minimum pressure check valve (MPCV) to
maintain a minimum pressure of approximately 60 psi (414 kPa) in the
WHASP Tank, this ensures there is adequate compressor lubrication, cooling,
and oil separation in the coalescing filter. Air will not flow out of the WHASP
Tank until approximately 60 psi is reached. The MPCV is factory set and
requires no adjustment or servicing.
The VMAC WHASP Tank has a built-in check valve. Use of
an additional check valve is not required and may cause
erratic performance.