Atlas Copco XATS 800 CD7 User Manual

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Leading particulars
GENERAL DESCRIPTION
The XAMS 407 CD - XAMS 850 CD7 is a silenced,
single-stage, oil-injected screw compressor, built for
a nominal effective working pressure of 8.6 bar
(125 psi).
The XATS 377 CD - XATS 800 CD7 is a silenced,
single-stage, oil-injected screw compressor, built for
a nominal effective working pressure of 10.3 bar
(150 psi).
The XAHS 347 CD - XAHS 710 CD7 is a silenced,
single-stage, oil-injected screw compressor, built for
a nominal effective working pressure of 12 bar
(175 psi).
The XAVS 307 CD - XAVS 650 CD7 is a silenced,
single-stage, oil-injected screw compressor, built for
a nominal effective working pressure of 14 bar
(200 psi).
Engine
The compressors XAMS 407 CD - XAMS 850 CD7,
XATS 377 CD - XATS 800 CD7, XAHS 347 CD -
XAHS 710 CD7 and XAVS 307 CD - XAVS 650
CD7 are driven by 6 cylinder in-line liquid-cooled
diesel engines.
The engine’s power is transmitted to the compressor
element through a heavy-duty coupling.
Compressor
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
compressor 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 oil is removed from the air, in the air/oil vessel at
first by centrifugal force, secondly through the oil
separator element.
The vessel is provided with an oil level indicator.
Regulation
The compressor is provided with a continuous
regulating system and a blow-off valve which is
integrated in the unloader assembly. The valve is
closed during operation by air receiver pressure and
opens by air receiver pressure via the compressor
element 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 an electronic 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
intercooler and the compressor is provided with an oil
cooler. For available options see chapter Available
options.
The cooling air is generated by a fan, driven by the
engine.
Safety devices
A thermal shut-down sensor 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 sensors.
The electric system is equipped with a 24V main
switch.

Atlas Copco XATS 800 CD7 Specifications

General

Brand	Atlas Copco
Model	XATS 800 CD7
Category	Air Compressor
Language	English