Atlas Copco GA90 User manual

Atlas Copco Stationary Air Compressors
Important
1. For GA/GA W 90 up to 160, this book applies to compressors from serial number AIF-078 300 onwards.
. For GA/GA W 00 up to 315, this book applies to compressors from serial number AIF-078 302 onwards.
3. This book must be used together with the "User manual for Elektronikon
®
regulator for GA-GR-ZA-ZE-
ZR-ZT compressors".
No. 2920 1475 00
Registration code: APC G³90/'99 / 38 / 963
00 -10
GA90 - GA110 - GA132 - GA160 - GA200 - GA250 - GA315
GA90 W - GA110 W - GA132 W - GA160 W - GA200 W -
GA250 W - GA315 W
· Copyright 00 , Atlas Copco Airpower n.v., Antwerp, Belgium.
Any unauthorized use or copying of the contents or any part thereof is prohibited. This applies in
particular to trademarks, model denominations, part numbers and drawings.
· This instruction book meets the requirements for instructions specified by the machinery
directive 98/37/EC and is valid for CE as well as non-CE labelled machines.
Instruction book
www.atlascopco.com

2920 1475 00
Instruction book
This instruction book describes how to handle the machines to ensure safe operation, optimum efficiency and long service life.
Read this book before putting the machine into operation to ensure correct handling, operation and proper maintenance from the
beginning. The maintenance schedule comprises measures for keeping the machine in good condition.
Keep the book available for the operator and make sure that the machine is operated and that maintenance is carried out according
to the instructions. Record all operating data, maintenance performed, etc. in an operator's logbook available from Atlas Copco.
Follow all relevant safety precautions, including those mentioned on the cover of this book.
Repairs must be carried out by trained personnel from Atlas Copco who can be contacted for any further information.
In all correspondence mention the type and the serial number, shown on the data plate.
For all data not mentioned in the text, see sections "Preventive maintenance schedule" and "Principal data".
he company reserves the right to make changes without prior notice.
Page
4.1.1 Regular service operations . . . . . . . . . . . . . . . . 37
4.1.2 Service kits . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
4.1.3 Service agreements . . . . . . . . . . . . . . . . . . . . . . 37
4.1.4 Service plan . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
4.2 Motor greasing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
4.2.1 Fan motors on GA . . . . . . . . . . . . . . . . . . . . . . 37
4.2.2 Drive motor . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
4.3 il specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
4.4 il change . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
4.5 il filter change . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
4.6 Storage after installation . . . . . . . . . . . . . . . . . . . . . . . . 38
4.7 Service kits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
5 Adjustments and servicing procedures . . . . . . . . . . . . . . . 39
5.1 Air filters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
5.2 Coolers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
5.3 Safety valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
5.4 il/water separators . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
6 Problem solving . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
7 Principal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
7.1 Readings on display . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
7.2 Programmable settings . . . . . . . . . . . . . . . . . . . . . . . . . 41
7.3 Settings of safety valve . . . . . . . . . . . . . . . . . . . . . . . . . 41
7.4 Settings of overload relay, circuit breakers and fuses . 42
7.4.1 Motor overload relay and fuses for 50 Hz
compressors . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
7.4.2 Motor overload relay and fuses for 60 Hz IEC
compressors . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
7.4.3 Motor overload relay and fuses for 60 Hz CSA/
UL compressors . . . . . . . . . . . . . . . . . . . . . . . . 43
7.4.4 Fan motor circuit breakers . . . . . . . . . . . . . . . . 44
7.4.5 Circuit breakers for dryer motor
(GA Full-feature) . . . . . . . . . . . . . . . . . . . . . . . 44
7.4.6 Circuit breakers for dryer cooling fan motor
(GA Full-feature) . . . . . . . . . . . . . . . . . . . . . . . 45
7.4.7 Circuit breaker for control circuit . . . . . . . . . . 45
7.5 Compressor specifications . . . . . . . . . . . . . . . . . . . . . . 46
7.5.1 Reference conditions . . . . . . . . . . . . . . . . . . . . 46
7.5.2 Limitations . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
7.5.3 Specific data of 7.5 bar - 50 Hz compressors . 46
7.5.4 Specific data of 8.5 bar - 50 Hz compressors . 47
7.5.5 Specific data of 10 bar - 50 Hz compressors . . 47
7.5.6 Specific data of 13 bar - 50 Hz compressors . . 48
7.5.7 Specific data of 100 psi - 60 Hz compressors . 48
7.5.8 Specific data of 125 psi - 60 Hz compressors . 49
7.5.9 Specific data of 150 psi - 60 Hz compressors . 49
7.5.10 Specific data of 200 psi - 60 Hz compressors . 50
7.6 Conversion list of SI units into British/American units 50
Contents
Page
1 Leading particulars . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.1 General description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.1.1 Main options . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.2 Air flow / regulating system . . . . . . . . . . . . . . . . . . . . . . 7
1.2.1 Air flow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1.2.2 Condensate drain system . . . . . . . . . . . . . . . . . . 7
1.2.3 il system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1.2.4 Cooling system . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1.2.5 Regulating system . . . . . . . . . . . . . . . . . . . . . . . 7
1.3 Elektronikon® control system . . . . . . . . . . . . . . . . . . . . 10
1.3.1 Automatic control of the compressor . . . . . . . 10
1.3.2 Protecting the compressor . . . . . . . . . . . . . . . . 10
1.3.3 Service warning . . . . . . . . . . . . . . . . . . . . . . . . 10
1.3.4 Automatic restart after voltage failure . . . . . . . 11
1.3.5 Permissive start . . . . . . . . . . . . . . . . . . . . . . . . 11
1.4 Control panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
1.4.1 LEDs/buttons/keys . . . . . . . . . . . . . . . . . . . . . . 11
1.4.2 Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
1.4.3 Function keys . . . . . . . . . . . . . . . . . . . . . . . . . . 12
1.4.4 Emergency stop button . . . . . . . . . . . . . . . . . . . 12
1.5 Menu-driven control programs . . . . . . . . . . . . . . . . . . . 12
1.5.1 Function of control programs . . . . . . . . . . . . . 12
1.5.2 Main screen . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
1.5.3 External compressor status indication . . . . . . . 14
2 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
2.1 Dimension drawings . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
2.2 Installation proposals . . . . . . . . . . . . . . . . . . . . . . . . . . 21
2.3 Electric cable size . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
2.4 Pictographs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
2.5 Cooling water requirements . . . . . . . . . . . . . . . . . . . . . 28
2.5.1 Type of the system . . . . . . . . . . . . . . . . . . . . . . 28
2.5.2 Cooling water parameters . . . . . . . . . . . . . . . . 29
3 Operating instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
3.1 Initial start-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
3.1.1 Safety precautions . . . . . . . . . . . . . . . . . . . . . . 31
3.1.2 User manual . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
3.1.3 utdoor/altitude operation . . . . . . . . . . . . . . . . 31
3.1.4 Moving/lifting . . . . . . . . . . . . . . . . . . . . . . . . . 31
3.1.5 Initial start-up . . . . . . . . . . . . . . . . . . . . . . . . . . 31
3.2 Before starting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
3.3 Starting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
3.4 During operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
3.5 Checking the display . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
3.6 Manual unloading/loading . . . . . . . . . . . . . . . . . . . . . . 34
3.7 Stopping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
3.8 Taking out of operation . . . . . . . . . . . . . . . . . . . . . . . . . 36
4 aintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
4.1 Preventive maintenance schedule for the compressor . 37

2920 1475 00 3
Instruction book
1 LEADING PARTICULARS
1.1 General description
GA90 up to GA315 and GA90 W up to GA315 W are single-
stage, oil-injected screw compressors, driven by an electric
motor and enclosed in a sound-insulated bodywork.
GA90 up to GA315 are air-cooled, abbreviated as "GA". GA90
W up to GA315 W are water-cooled, abbreviated as "GA W".
GA Full-feature (FF) compressors are provided with an air
dryer integrated in the bodywork. The system includes dryer
by-pass valves.
The compressors are available for a maximum working pressure
of:
- 7.5, 8.5, 10 or 13 bar(e) for 50 Hz versions
- 107, 13 , 157 or 00 psig for 60 Hz versions
The compressors include mainly:
- Air filter(s)
- Compressor element 1)
- Air receiver/oil separator
- Air cooler
- Oil cooler(s)
- Drive motor
- Gear casing
- Unloader 1)
- Elektronikon® control system
- Safety devices
- Air dryer with by-pass valves (Full-feature compressors
only)
1 Oil coolers
Control panel
3 Electric cabinet
4 Power supply inlet
5 Vibration damper
6 Vibration damper
7 Gear casing
8 Compressor element
9 Oil stop valve
10 Check valve
11 Unloader
1 Air receiver
13 Minimum pressure valve
14 Cooling fan
M1 Drive motor
M 5 Fan motor
Fig. 1.1 Front view, GA110 FF

2920 1475 00
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Instruction book
1 Oil coolers
Control panel
3 Electric cabinet
4 Power supply inlet
5 Vibration damper
6 Vibration damper
7 Gear casing
8 Oil stop valve
9 Check valve
10 Compressor element
11 Unloader
1 Air receiver
13 Safety valve
14 Minimum pressure
valve
15 Arrow, motor
rotation direction
16 Cooling fans
17 Air filters
M1 Drive motor
M 5/ 6 Fan motors
Fig. 1. Front view, GA 50 FF
1 By-pass valve
By-pass valve
3 By-pass valve
4 Oil coolers
5 Vent plugs
6 Air cooler
7 Cooling fan
8 Unloader
9 Oil drain plug, air
receiver
10 Air receiver
11 Oil cooler by-pass
valve
1 Oil filters
13 Condensate trap
14 Oil drain plug
15 Oil drain plug
16 Air dryer
17 Condensate outlets
18 DD filter (option)
19 Compressed air
outlet
0 Air filter
M 5 Fan motor
Fig. 1.3 Rear view,
GA110 FF
1234
567 M25
9
10
11
1213141516
17
18
19
20
51329F
8

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 .4. .
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. 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 µm 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 ( 00 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
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)
1 Oil drain plug, air receiver
Fig. 1.4 Rear view, GA 50 FF
50837F
765
8
9
11
10
123
4
12

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Instruction book
1 Pipe coupling
Air cooler
3 Oil coolers
4 Cooling fan
5 Air inlet hoses
6 Filler plugs (only to be used at initial
start-up)
7 Check valves
8 Compressor elements
9 Arrow, rotation direction of drive motor
10 Unloaders
11 Air receiver
1 Oil filters
13 Oil separator element
14 Receiver cover
15 Bolt
16 Minimum pressure valve
17 Safety valve
18 Pipe, air receiver to air cooler
19 Oil drain plug, air receiver
0 Bolts
M 5/ 6 Fan motors
Y1 Loading solenoid valve
Fig. 1.6 Side view, GA 50 FF
1 Pipe coupling
Oil coolers
3 Arrow, motor rotation direction
4 Air cooler
5 Bolts
6 Filler plug (only to be used at initial
start-up)
7 Air inlet hose
8 Unloader
9 Arrow, rotation direction of drive motor
10 Compressor element
11 Check valve
1 Oil drain plug, air receiver
13 Air receiver
14 Oil separator element
15 Oil filters
16 Receiver cover
17 Bolt
18 Minimum pressure valve
19 Cooling fan
0 Pipe, air receiver to air cooler
1 Safety valve
M 5 Fan motor
Y1 Loading solenoid valve
Fig. 1.5 Side view, GA110 FF
123
5
7
8
10
11
12
13
14
15
16
17
18
M25
19
20
50852F
6
Y1
4
9
21
4M25 23
20 M26 4
6
6
Y1
10
5
5
7
88 7919
50835F
15
14
10
13
12
11
18
17
16
1

2920 1475 00 7
Instruction book
P 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. If
the temperature rises above the shut-down setting, the
compressor will shut down and the general alarm LED starts
blinking.
DIN/BSP or ANSI/NP connections
For GA90 up to 160 a BSP or NPT connection can be chosen.
For GA 00 up to 315 a DIN or ANSI connection can be chosen.
HD Roto-fluid
Special oil for Atlas Copco GA oil-injected screw compressors.
It provides better cooling and extends the oil change interval
to 8000 hours.
Cooling air outlet ducting
Diverts the cooling air in such a 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 solid 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 with all applicable
safety standards.
1.2 Air flow / regulating system (Figs. 1.7
and 1.8)
1.2.1 Air flow 1)
Air drawn through filter (1) and unloader ( ) is compressed in
compressor element (14). Compressed air and oil are
discharged through check valve (16) to air receiver/oil separator
(17) in which the 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 ( 8)
and outlet valve ( 7) 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 ( 8) 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 downstream of the dryer. This
trap is also provided with a float valve for automatically draining
condensate and with a manual drain valve.
1.2.3 Oil system 1)
Air pressure forces the oil from receiver (17) through oil coolers
(6), filters (7) and oil stop valve (15) to compressor element
(14) and the lubrication points.
Oil stop valve (15) prevents the compressor element from
flooding with oil when the compressor is stopped.
Valve ( 6) by-passes oil coolers (6) when starting the
compressor from cold condition, to ensure rapid warming of
the oil to normal working temperature.
In air receiver (17) most of the oil is removed from the air
centrifugally. Almost all of the remaining oil is removed by
separator element (18).
1.2.4 Cooling system
On GA, the system includes air cooler (4) and oil coolers (6),
cooled by one or two fans (5) 2).
GA W are provided with a cooling water system, including a
combined oil and air cooler.
1.2.5 Regulating system
The system keeps the net pressure within programmable
pressure limits by automatically loading and unloading the
compressor depending on the air consumption. It is controlled
by Elektronikon® regulator (E1) which also protects the
compressor and monitors components subject to service. See
section 1.3.
1.2.5.1 GA GA W 90 160
Unloading
If the air consumption is less than the air delivery of the
compressor, the net pressure increases. When the net pressure
reaches the upper limit of the working pressure (unloading

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Instruction book
Fig. 1.7 GA90/160 Full-feature
during unloading
1 Air filter
2 Unloader
3 Unloading valve
4 Air cooler
5 Cooling fan
6 il coolers
7 il filters
8 Chamber, control pressure
9 By-pass opening
10 Blow-off channel
11 Chamber, receiver pressure
12 Valve
13 Shield
14 Compressor element
15 il stop valve
16 Check valve
17 Air receiver
18 il separator element
19 Minimum pressure valve
20 Check valve
21 il scavenging line
22 Safety valve
23 il filler plug
24 il level indicator

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Instruction book
Fig. 1.8 GA 00/315 during loading
25 il drain plug
26 By-pass valve
27 Air outlet valve (customers
installation)
28 Condensate trap
29 Channel
30 Flexible, receiver pressure
31 Insulating block
32 Condensate trap
33 Liquid  gas mixer
34 Thermostatic expansion valve
35 Sight-glass
36 Filter/dryer
37 Capillary tube
38 Fan control switch
39 High pressure switch
40 Fan
41 Fan motor
42 Condenser
43 Hot gas by-pass valve
44 Refrigerant compressor
45 Liquid separator
46 Low pressure switch
47 Air/refrigerant heat exchanger
48 Air/air heat exchanger
49 By-pass valves
50 By-pass valve
E1 Elektronikon regulator
M1 Drive motor
Y1 Loading solenoid valve
Figs. 1.7 and 1.8 Regulating system

2920 1475 00
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Instruction book
pressure), solenoid valve (Y1) is de-energized. The plunger of
the valve moves downwards by spring force:
1. The plunger of solenoid valve (Y1) shuts off the supply of
receiver pressure towards chamber (8).
. Control pressure present in chamber (8) is vented to
atmosphere through loading solenoid valve (Y1). Unloading
valve (3) closes by spring force.
3. Valve (1 ) is pushed downwards releasing receiver pressure
through flexible (30) and channels (10 and 9) towards the
air inlet.
4. A small flow of air remains drawn in through hole (9) and
channel (10), and is blown from receiver (17) via flexible
(30) to the air inlet.
5. Air delivery is stopped (0 %), the compressor runs unloaded.
Loading
When the net pressure decreases to the lower limit of the
working pressure (loading pressure), solenoid valve (Y1) is
energized. The plunger of solenoid valve (Y1) moves upwards
against spring force:
1. The plunger of solenoid valve (Y1) opens the supply of
receiver pressure towards chamber (8). Unloading valve
(3) opens against spring force.
. Receiver pressure also pushes valve (1 ) upwards, shutting
off blow-off channels (10 and 9).
3. Air delivery is resumed (100 %), the compressor runs
loaded.
1.2.5.2 GA GA W 200 315
The operation of the system is similar to that of GA90/160,
except that GA/GA W 00/315 are equipped with two
compressor elements, each provided with an unloader, check
valve and oil stop valve.
1. Elektronikon® control system
In general, the Elektronikon regulator has following functions:
- automatic control of the compressor
- protecting the compressor
- monitoring components - service warning
- automatic restart after voltage failure
1.3.1 Automatic control of the compressor
The regulator maintains the net pressure between programmable
limits by automatically loading and unloading the compressor.
A number of programmable settings, e.g. the unloading and
loading pressures, the minimum stop time and the maximum
number of motor starts are taken into account.
The regulator stops the compressor whenever possible to reduce
the power consumption and restarts it automatically when the
net pressure decreases. In case the expected unloading period
is too short, the compressor is kept running to prevent too-
short standstill periods.
Warning A number of time-based automatic start/stop
commands may be programmed. Take into
account that a start command will be executed (if
programmed and activated) even after manually
stopping the compressor.
1.3.2 Protecting the compressor
Shut-down and motor overload
If the temperature at the outlet of the compressor or at the outlet
of the compressor element exceeds the programmed shut-down
level, the compressor will be stopped. This will be indicated
on the control display.
The compressor will also be stopped in case of overload of the
drive motor or in case of overload of the fan motor(s).
Consult the safety precautions as mentioned in section 4 and
remedy the trouble. See also the User manual for Elektronikon
regulator, section Status data menu.
Shut-down warning
If the regulator detects a temperature just below the programmed
shut-down level, this will be indicated on the control panel to
warn the operator before the shut-down level is reached.
The message disappears as soon as the warning condition
disappears.
1.3.3 Service warning
A number of service operations are grouped (called Level A,
B, C, ...). Each level has a programmed time interval. If a time
interval is exceeded, a message will appear on display ( -Fig.
1.9) to warn the operator to carry out the service actions
belonging to that level. See section 4.

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Instruction book
1.3.4 Automatic restart after voltage failure
The regulator has a built-in function to automatically restart
the compressor if the voltage is restored after voltage failure.
For compressors leaving the factory, this function is made
inactive. If desired, the function can be activated. Consult
Atlas Copco.
Warning If activated and provided the module was in the
automatic operation mode the compressor will
automatically restart if the supply voltage to the
module is restored within a programmed time
period.
The power recovery time (the period within which
the voltage must be restored to have an automatic
restart) can be set between 1 and 255 seconds or
to Infinite. If the power recovery time is set to
Infinite the compressor will always restart after
a voltage failure no matter how long it takes to
restore the voltage. A restart delay can also be
programmed allowing e.g. two compressors to be
restarted one after the other.
1.3.5 Permissive start
After a start command (either automatic start by the electronic
regulator or manual start), the permissive start function is
operative: if the oil injection pressure at the compressor
elements exceeds the programmed level, the compressor will
not start (indicated as <<Start failure>>).
Fig. 1.9 Control panel
1.4 Control panel
1.4.1 LEDs buttons keys
Ref. Designation Function
1 Start button Push button to start the
compressor. LED (8) lights up
indicating that the Elektronikon
regulator is operative.
Display Indicates messages concerning the
compressor operating condition, a
service need or a fault.
3 Scroll keys Keys to scroll upwards or
downwards through the display.
4 Tabulator key Key to select the parameter
indicated by a horizontal arrow.
Only the parameters followed by
an arrow pointing to the right are
accessible for modifying.
5 Function keys Keys to control and program the
compressor. See section 1.4.3.
6 Voltage on LED Indicates that the voltage is
switched on.
7 General alarm Is alight if a shut-down warning
LED condition exists. See section 1.3.
7 General alarm Blinks if a shut-down condition
LED exists, if an important sensor is out
of order or after an emergency
stop. See section 1.3.
8 Automatic Indicates that the regulator is
operation LED automatically controlling the
compressor.
9 Stop button Push button to stop the
compressor. LED (8) goes out.
S Emergency Push button to stop the compressor
immediately in case of emergency.
After remedying the trouble,
unlock the button by pulling it out.

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1.4.2 Display
The following is a typical example of the main screen, showing
in short the status of the compressor:
Compressor Outlet 7.0 bar
Automatically loaded ¯
Menu Unload
F1 F F3
Fig. 1.10 Example of the main screen
1.4.3 Function keys (5-Fig. 1.9)
The keys are used:
- to call up or program settings
- to reset an active motor overload, shut-down or service
message, or an emergency stop
- to have access to all data collected by the regulator
The functions of the keys vary depending on the displayed menu.
The actual function is indicated on the bottom line of the display
just above the relevant key.
The most common functions are listed below:
Designation Function
Add To add compressor start/stop commands (day/
hour)
Back To return to a previously shown option or
menu
Cancel To cancel a programmed setting when
programming parameters
Delete To delete compressor start/stop commands
Help To find the Atlas Copco internet address
Limits To show limits for a programmable setting
MainScreen To return from a menu to the main screen (Fig.
1.1 )
Menu Starting from the main screen (Fig. 1.1 ), to
have access to submenus
Menu Starting from a submenu, to return to a
previous menu
Modify To modify programmable settings
Program To program modified settings
Reset To reset a timer or message
Designation Function
Return To return to a previously shown option or
menu
Extra To find information regarding the installed
modules
1.4.4 Emergency stop button (S2-Fig. 1.9)
In case of emergency, press the button to stop the compressor
immediately.
Pressing the button breaks the circuit to the drive motor. he
circuit to the control circuit and other electrical components
is not broken.
Warning - Before starting any maintenance or repairs
wait until the compressor has stopped and open
the isolating switch (customer's installation) to
switch off the voltage to the compressor.
- Close the air outlet valve and open condensate
drain valves (1 and 2-Fig. 3.7)
Apply all relevant safety precautions including
those mentioned in this book.
1.5 Menu-driven control programs
To facilitate programming and controlling the compressor,
menu-driven programs are implemented in the electronic
module.
A simplified menu flow is shown in Fig. 1.11.
1.5.1 Function of control programs
Program/ Description
Function
Main screen Shows in short the operation status of the
compressor. It is the gateway to all functions.
See Fig. 1.1 .
Status data Calling up the status of the compressor
protection functions:
- shut-down
- shut-down warning
- service warning
- warning
Resetting of a shut-down, motor overload and
service condition.
Measured data Calling up:
- actually measured data
- the status of a number of inputs

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Fig. 1.11 Menu flow
Compressor Outlet 6.4 bar
Automatically Loaded
↓
Menu Unload
Automatic Operation
Local Control
Week Timer Active ↓
Mainscreen Help Extra
Maximum Pressure 8.3 bar ↑
Running Hours 1016 hrs
Loaded Hours 980 hrs ↓
Mainscreen Help Extra
Status Data →
Measured Data
Counters ↓
Mainscreen
All Conditions Are OK
Menu Help
Status Data ↑
Measured Data →
Counters ↓
Mainscreen
Compressor Outlet 5.4 bar
Dp Oil Separator 1.1 bar
Dp Air Filter 0.02 bar ↓
Menu
Measured Data ↑
Counters →
Test ↓
Mainscreen
Counters ↑
Test →
Modify Parameters ↓
Mainscreen
Test ↑
Modify Parameters →
Service ↓
Mainscreen
Modify Parameters ↑
Service →
Saved Data ↓
Mainscreen
Running Hours 1016 hrs
Loaded Hours 980 hrs
Motor Starts 945 number ↓
Menu
Loading Pressure 6.4 bar
Unloading Pressure 7.0 bar
Loading Pressure 2 6.0 bar ↓
Menu Modify
Compressor Outlet 5.4 bar
Dp Oil Separator 1.1 bar
Dp Air Filter - 0.011 bar ↓
Menu
Parameters ↑
Protections →
Service Plan ↓
Menu
Service Timer
Running Hours →
130 hrs ↓
Menu
Service Timer
Running hours →
130 hrs ↓
Menu
Modify Parameters ↑
Service
Saved Data →
Mainscreen
Last Shutdown 1 →
Last Shutdown 2
Last Shutdown 3 ↓
Menu
52407PEN
Service Plan ↑
Clock Function →
Configuration ↓
Menu
Clock Function
Not Activated →
Menu Modify Delete
Time 10:54
Date 03/05/01
Date Format DD/MM/YY ↓
Menu Modify
-Motor Starts
-Module Hours
-Load Relay
-Compressor Outlet
-Dp oilseparator
-Dp Air Filter
-Oil injection element
-Compressor Outlet
-Element 1 Outlet
-Element 2 Outlet
-Cooling medium
-Oil Injection Element
-Compressor Outlet
-Element 1 Outlet
-Element 2 Outlet
-Cooling Medium
-Oil Separator
-Dryer LAT
-Emergency Stop
-Remote Start/Stop
-Remote LoadUnload
-Remote pressure sensing
-Overload Motor
-Overload Fanmotor
-Starter Feedback Contact
-PB1 open/ PB2 closed
-Overload Dryer/Dryer Fan
-Module Hours
-Load Relay
-Unloading Pressure 2
-Y-Time
-Load Delay
-Nr Of Starts/ Day
-Minimum Stop Time
-Programmed Stop Time
-Permisive Start Time
-Communication Time-out
Display Test →
Safety Valve Test
↓
Menu
-Oil Injection Element
-Compressor Outlet
-Element 1 Outlet
-Element 2 Outlet
-Cooling Medium
-Oil Separator
-Dryer LAT
-Emergency Stop
-Remote Start/Stop
-Remote Load/Unload
-Remote Pressure Sensing
-Overload Motor
-Overload Fanmotor
-Starter Feedback Contact
-PB1 open/ PB2 closed
-Overload Dryer/Dryer Fan
-Language In Use
-Pressure Unit
-Temperature Unit
-Vibration Unit
-Level Unit
-Pressure Band Used
-Start Mode
-CCM (control mode)
-Automatic Restart
-Password
-Node ID
-Digital Presband Selec.
Service Plan ↑
Clock Function
Configuration →
Menu
Parameters →
Protections
Service Plan ↓
Menu
-Oil separator
-Dryer LAT
-Emergency Stop
-Remote Start/Stop
-Remote Load/Unload
-Remote pressure sensing
-Overload Motor
-Overload Fanmotor
-Starter Feedback Contact
-PB 1 open/ PB2 closed
-Overload dryerdryer fan
Protections ↑
Service Plan →
Clock Function ↓
Menu

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Program/ Description
Function
Counters Calling up the:
- running hours
- number of motor starts
- regulator (module) hours
Test Allows a display test.
Modify Modifying the settings for:
parameters - parameters: loading and unloading
pressures
- protections: compressor outlet pressure,
air filter pressure drop, .... (see Fig. 1.11)
- service plans: timers for service plans
- clock functions: automatic compressor
start/stop/pressure band commands
- configuration: time, date, display
language, 
Service Calling up service plans and resetting the
timers after carrying out the service actions
belonging to a plan. See section 4.
Saved data Calling up the saved data: last shut-down, last
emergency stop data
1.5.2 Main screen
When the voltage is switched on, the main screen is shown
automatically, showing in short the operation status of the
compressor.
Compressor Outlet 7.0 bar
Automatically loaded ¯
Menu
F1 F F3
Fig. 1.1 Main screen, typical example
If the function keys or arrow keys are not used for some minutes,
the display will automatically return to the Main screen.
Whenever displayed on a submenu screen, press the key
Mainscreen to return to the Main screen.
Footnotes chapter 1
1) GA/GA W 90 up to 160 have one compressor element and one
unloader. GA/GA W 200 up to 315 have two compressor
elements, each provided with an unloader, check valve and oil
stop valve.
2) GA90 and GA110 are provided with one fan. GA132 up to GA315
are provided with two fans.
1.5.3 External compressor status indication
Terminal strip (1X7-Fig. 1.13) is provided with auxiliary
contacts for external indication of:
Indication Relay erminals Max. load
on strip 1X7
Automatic operation K07 11-1 10 A / 30 V AC
Warning K08 13-14 10 A / 30 V AC
Shut-down K09 15-16 10 A / 30 V AC
Compressor loading K11 17-18 3 A / 30 V AC
Motor running K 1 19- 0 6 A / 30 V AC
Warning Stop the compressor and switch off the voltage
before connecting external equipment.
F0/1 Circuit breakers
F3/4/5 Circuit breakers,
control circuit
F 1 Compressor motor
overload relay
K11 Auxiliary relay,
loading
K 1 Line contactor
K Star contactor
K 3 Delta contactor
Q 5 Circuit breaker, fan
motor M 5
(GA90/315)
Q 6 Circuit breaker, fan
motor M 6
(GA13 /315)
T1/T Transformers
1X3/7 Terminal strips
Fig. 1.13 Electric cabinet, typical example

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2 INSTALLATION
2.1 Dimension drawings
Fig. .1 Dimension drawing, GA90 and GA110

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Fig. . Dimension drawing, GA90 W and GA110 W

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Fig. .3 Dimension drawing, GA13 and GA160

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Fig. .4 Dimension drawing, GA13 W and GA160 W

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Fig. .5 Dimension drawing, GA 00 up to GA315

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Fig. .6 Dimension drawing, GA 00 W up to GA315 W