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Engine
The compressor is driven by a liquid-cooled diesel
engine.
The engine's power is transmitted to the compressor
through a gear box.
Compressor element
The compressor casing houses two screw-type rotors,
mounted on ball and roller bearings. The male rotor,
driven by the engine, drives the female rotor. The
element delivers pulsation-free air.
Injected oil is used for sealing, cooling and
lubricating purposes.
Compressor oil system
The oil is boosted by air pressure. The system has no
oil pump.
The entire oil system is equipped with screwed oil
hoses to ensure higher quality and less failures.
The oil is removed from the air, in the air/oil vessel
first by centrifugal force, secondly by the oil separator
element. A Spin-on oil separator assures for quick
service.
Regulation
The compressor is provided with a continuous
pneumatic regulating system and a blow-down valve
which is integrated in the unloader assembly. The
valve is closed during operation by outlet pressure of
the compressor element and opens by air receiver
pressure when the compressor is stopped.
When the air consumption increases, the air receiver
pressure will decrease and vice versa.
This receiver pressure variation is sensed by the
regulating valve which, by means of control air to the
unloader and engine speed regulator, matches the air
output to the air consumption. The air receiver
pressure is maintained between the pre-selected
working pressure and the corresponding unloading
pressure.
Cooling system
The engine is provided with a liquid cooler and the
compressor is provided with an oil cooler.
The top tank of the engine cooler is integrated in the
cooler to reduce the amount of connections. This
results in higher general robustness and less engine
failures.
The cooling air is generated by a fan, driven by the
engine.
Fuel system
The fuel feed lines and fuel filtration are designed in
such a way that after running the fuel tank dry, air
pockets can't reach the engine and smooth starting is
ensured.
Safety devices
A thermal shut-down switch protects the compressor
against overheating. The air receiver is provided with
a safety valve.
The engine is equipped with low oil pressure and high
coolant temperature shut-down switches.
Frame and axles
The machine is equipped with a spillage-free frame.
The base frame which is made out of a single metal
sheet, can contain up to 110% of all the liquids in the
compressor. A drain plug is installed to drain the
frame and safely capture all the spilled liquids.
The bumper is designed in such a way that it protects
the rear bottom of the frame if the machine would be
tilted on its rear.
The compressor/engine unit is supported by rubber
buffers in the frame.
The unit can be delivered with or without wheels. If
equipped with wheels it has an adjustable or fixed tow
bar with or without brakes. The tow bar can be
equipped with a ball coupling or various towing eyes.
The tow bar can be equipped with a jockey wheel or
support leg.
Box_2-2.book Page 16 Friday, October 27, 2017 3:48 PM
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