Atlas Copco GR110, Инструкция

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Instruction book
Integrated OSD
The OSD (Oil Separating Device) separates the oil-residues
from the condensate water. The clean water can be drained in
the sewer without any further treatment. The separated oil is
gathered in a container and can be disposed of according to
prevailing regulations.
Electronic drain (only on GR (W) 13 bar/200 psi)
The EWD (Electronic Water Drain) assures proper draining of
condensate and prevents water from entering the compressed
air net. At any malfunction of the draining process, the EWD
generates a warning message on the display of the Elektronikon
regulator.
Energy recovery
The compressors can be provided with the Atlas Copco energy
recovery systems to recover the major part of the compression
heat in the form of hot water without any influence on the
compressor performance.
Oil containing frame
This frame is to be installed under the standard machine and
will collect oil from occasional leakage and avoid oil to spread
over the floor.
Modulating control
The modulating control system is designed to maintain a narrow
pressure band (0.2 bar) by throttling the air inlet, thus reducing
the airflow (50% - 100%).
Heavy-duty air intake filter
A two stage heavy-duty air intake filter kit is available allowing
the compressor to operate in heavily contaminated surroundings
(e.g. cement or mining industry). The larger dust particles are
collected in the first stage of the filter. The filter efficiency
(SAE fine) is 99% at 1µm, 99.8% at 2µm and 99.9% at 3 µm.
The pressure drop of the heavy-duty air intake filter is equal to
the standard air intake filter.
Rain protection
The rain protection prevents rain from entering the machine.
At the same time it protects the display of the Elektronikon
regulator against sun and rain.
Phase Sequence Relay
The phase sequence relay prevents the drive motor from rotating
in the wrong direction.
PT 1000 Thermal protection
The PT 1000 Thermal protection provides protection of the
drive motor. Five sensors are installed in the motor, two to
measure the temperature of the bearings and three to measure
the temperature of the windings. The readings can be called
up on the display of the Elektronikon regulator. A message
will appear on the display and the general alarm LED will light
up if one of the temperatures exceeds the shut-down warning
setting.
BSP or NPT connections
For GR110 up to -200 a BSP or NPT connection can be chosen.
Communication module
COM1/COM2 module allows remote communication and
monitoring with the Elektronikon regulator.
Communication with Atlas Copco ES400 remote monitoring
system or with the customer’s PC by means of:
-
RS 232 C, for short distance (15m) point to point
communication
- Current loop, for long distance (1.2 km) general
communication
Cooling air outlet ducting
Divert the cooling air in such way that the hot air is not led to
the cooling air inlet. This option is only available for air-cooled
compressors.
Lifting device
The lifting device is a steel beam construction bolted to the
compressor. It allows the customer to lift the compressor by
means of e.g. a crane. It is AIB and CE approved and complies
to all safety standards applicable.
1.2 Air flow / regulating system
(Figs. 1.4 and 1.5)
1.2.1 Air flow
Air drawn through filter (1) and unloader (2) is compressed in
low-pressure compressor element (14) and blown to high-
pressure compressor element (53) where it is further
compressed. Compressed air and oil are discharged through
check valve (16) to air receiver/oil separator (17) in which oil
is separated from the compressed air. The air is blown through
minimum pressure valve (19) to air cooler (4). The cooled air
is discharged through condensate trap (28) and outlet valve
(27) towards the air net.
Check valve (16) prevents blow-back of compressed air.
Minimum pressure valve (19) prevents the receiver pressure
from dropping below a minimum pressure. The valve has a
built-in check valve.
1.2.2 Condensate drain system
A condensate trap (28) is installed downstream of the air cooler
to prevent condensate from entering the air outlet pipe. The
trap is provided with a float valve for automatically draining
condensate and with a manual drain valve.
Full-feature compressors, which are provided with an air dryer,
have a second condensate trap (32) downstream of the dryer.
This trap is also provided with a float valve for automatically
draining condensate and with a manual drain valve.