Atlas Copco XAHS 37 DD, Инструкция по эксплуатации

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13
Instruction Manual
– Regulation
The compressor is provided with a continuous 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
Engine and compressor are provided with an oil cooler.
The cooling air is generated by a fan, driven by the engine.
– 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 oil
temperature shut-down switches.
– Frame and axle
The compressor/engine unit is supported by rubber buffers in a
spillage-free frame. The standard unit has a none adjustable towbar
with support leg and one of the following towing eyes AC, DIN, ball,
ITA, GB or NATO.
As an option the unit can be equipped with an adjustable towbar, a
jockey wheel and/or overrun parking brake (for options see chapter
7 ).
The braking system consists of an integrated parking brake and
overrunbrake. When driving backwards the overrunbrake is not
engaged automatically.
– Bodywork
The bodywork has openings at the shaped front and rear end for the
intake and outlet of cooling air and a hood for maintenance and
service operations. The bodywork is internally lined with sound-
absorbing material.
– Lifting eye
A lifting eye is accessible when the small door at the top of the unit
is unlocked.
– Control panel
The control panel grouping the air pressure gauge, control switch
etc., is placed in the center at the rear end.
– Data plate
The compressor is furnished with a data plate showing the product
code, the unit number and the working pressure (see chapter
9 ).
– Serial number
The serial number is located on the right-hand front side of the
frame.
– Generator (option for XAS 47 DD - XAS 90 DD7)
The built-in generator is driven by a multi V-belt drive. The generated
current can be drawn via 3 sockets (see chapter
8 , Technical
Specifications).
The compressor and the generator of the XAS 47 DDG -
XAS 90 DD7G / DDG IT may be used simultaneously.
As an option the generator can be equipped with an automatic control
system to save fuel when no electric power is used.