VMAC
– Vehicle Mounted Air Compressors
Toll Free:
1-800-738-8622 Local: 1-250-740-3200
Fax: 1-250-740-3201
10
1.5
Specifications and Components
The Raptair-MF Diesel Drive consists of a Kubota D902 24hp 900cc
3-cyl diesel engine belt driving a 45CFM air compressor. To increase
functionality you can add a 10kW 3-phase generator, a 12-24-36-
48V battery booster and charger, a 300A DC CV/CC welder, a
clutched SAE A Port (PTO) capable of a maximum 20 hp hydraulic
pump or equivalent load, or a (5,8,10) GPM @ 3000psi hydraulic
pump
1.5.1
Air compressor
The VMAC air end is an oil flooded, rotary screw compressor driven
by a serpentine belt through a 12V clutch. Compression occurs when
inlet air (at normal atmospheric pressure) enters a chamber where it
is trapped between the rotating rotor lobes. A lubricated pitch line
provides sealing. As the lobes mesh, they reduce the volume of the
air, compressing it to the desired pressure.
The air end clutch is electronically controlled and is automatically
disengaged when the engine RPM drops below a set point to ensure
that the generator frequency is maintained within the acceptable
range.
PTO loads are not controlled or directly monitored.
Air pressure in the reservoir tank is maintained when compressor
switch is in the on position and is monitored to determine when the
compressor needs to engage to top up the tank.
The system comprises of two-stage air/oil separation. The first
separation stage consists of a separation tank with internal baffles
which perform mechanical separation. The second stage uses a
special separation element which delivers dry air to the outlet. The
second stage is a spin-on type coalescing filter.
Air pressure regulation is achieved with an electro-mechanical inlet
valve settable through the Display box. The system pressure is pre-
set at 150 psi but can be increased up to 175 psi. Do not
unnecessarily increase the pressure setting as the compressor load
increases with system pressure and will limit the power available to
run other loads before the system disengages the compressor.
To adjust the pressure, refer to section 7.4.6, and use a Filter
Regulator Lubricator (FRL) to set the final tool pressure.
The compressor is protected by a paper-type replaceable air filter
and a spin-on type oil filter.
Summary of Contents for RAPTAIR-MF D600007
Page 2: ......
Page 62: ...This page intentionally left blank...
Page 64: ...This page intentionally left blank...
Page 65: ...This page intentionally left blank...
Page 66: ...This page intentionally left blank...
Page 67: ......
Page 68: ......