User manual

2920 1475 00
5
Instruction book
1.1.1 Main options
Full-feature
A refrigerant dryer is fully integrated in the bodywork of the
compressor. This all-in-one feature reduces the required
space for installation and provides savings on piping installation
cost.
Integrated DD filter
Full-feature compressors can be provided with an integrated
filter of the DD type to limit carry-over of solid particles and
oil. By integrating a DD filter, the compressor delivers Quality
Air according to ISO 8573-1, Class 2.4.2.
Integrated OSD
The OSD (Oil Separating Device) separates the oil residues
from the condensate water. The clean water can be drained
into the sewer without any further treatment. The separated oil
is collected and must be disposed of according to prevailing
regulations.
Electronic drain
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 installed under the 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
net pressure band (0.2 bar) by throttling the air inlet, thus
reducing the air flow (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.
Rain protection
If a GA compressor is installed outdoors, 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.
High ambient temperature version
The GA HAT (High Ambient Temperature) version is specially
designed for continuous operation in humid and high ambient
temperature environment up to 50 degrees Celsius. This option
is available for GA air and water-cooled compressors except
for 13 bar (200 psi) and GA Full-feature compressors.
Phase Sequence Relay
The phase sequence relay prevents the drive motor from rotating
in the wrong direction.
1 By-pass valve
2 Vent plugs
3 Air cooler
4 Air receiver
5 Oil filters
6 Condensate trap
7 Oil drain plugs
8 Air dryer
9 Electronic water drain
(option)
10 By-pass valves
11 DD filter (option)
12 Oil drain plug, air receiver
Fig. 1.4 Rear view, GA250 FF
50837F
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