12
Instruction Manual
2. LEADING PARTICULARS
2.1 DESCRIPTION OF SAFETY PICTOGRAMS USED IN THIS MANUAL
Fig. 2.1.a General view metal canopy
2.2 GENERAL DESCRIPTION
The compressors type XAS 67 DD - XAS 130 DD7,
XATS 67 DD - XATS 125 DD7, XAS 77 DD - XAS 150 DD7 and
XAS 97 DD - XAS 185 DD7 are silenced, single-stage, oil-injected
screw compressors, built for a nominal effective working pressure,
ranging from 7 bar up to 10.3 bar (see chapter 8, technical
specifications).
The compressor is available with metal or PE canopy (HardHat).
–Engine
The compressor is driven by an oil-cooled diesel engine.
The engine’s power is transmitted to the compressor through a
heavy-duty drive belt (XAS 67 DD - XAS 130 DD7,
XATS 67 DD - XATS 125 DD7) or a heavy-duty coupling
(XAS 77 DD - XAS 150 DD7, XAS 97 DD - XAS 185 DD7).
– 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 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.
Fig. 2.1.b General view HardHat
This symbol draws your attention to dangerous
situations. The operation concerned may endanger
persons and cause injuries.
This symbol is followed by supplementary information.
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