Description
The Atlas Copco GA 22 is the 22 kW / 30 hp screw compressor of the oil-injected range, sized for plants that run a steady three-shift demand on a single machine. The model exists in two branches: the GA 22 of the compact GA 11-26 series with five pressure versions from 7.5 to 16 bar(e), and the GA 22+ of the upgraded GA 11+-30 series with up to 73.5 l/s on the same motor rating. The compact GA 22 weighs 440 kg as a Standard WorkPlace build and posts 67 dB(A), which is the lowest noise figure of the whole small machine class. Both branches carry a 5-year factory warranty or 24,000 hours of operation, whichever comes first, after registration.
The two branches share the motor rating but differ in frame, flow and control generation, and the sections below keep them side by side. A plant that needs the widest pressure ladder picks the compact branch; a plant that wants more flow per kilowatt and the touchscreen generation picks the plus branch.
Where the GA 22 Fits in the Oil-Injected Range
The GA 22 sits one step below the GA 26 in the compact GA 11-26 series, and the GA 22+ holds the matching position in the upgraded GA 11+-30 series below the GA 30. Plants choose it when the demand has outgrown the 15 kW and 18.5 kW models but does not yet justify the 26 kW class, or when a high-pressure line up to 16 bar needs its own dedicated supply. The compact branch maximizes economy and footprint, while the plus branch adds flow, the touchscreen controller and the 3 degrees Celsius dryer of the upgraded series.
What Standard and FF Mean
The GA 22 comes as a Standard build with the element, gear drive, cooling system and controller inside the sound-proofed WorkPlace canopy, and as an FF build that adds the refrigerant dryer and the loss-free condensate drain inside the same enclosure. The FF build delivers dry air at a pressure dew point of 5 degrees Celsius and leaves the machine as a plug-and-play station that avoids the installation work of an external treatment chain.
The GA 22+ FF holds a pressure dew point of 3 degrees Celsius, and both FF builds accept built-in filter stages that polish the residual oil content down to 0.01 ppm.
Technical Specifications of the GA 22
The table below condenses the two branches into their headline figures:
| Parameter | Value |
|---|---|
| Installed motor power | 22 kW / 30 hp |
| Branches | GA 22 (GA 11-26 series); GA 22+ (GA 11+-30 series) |
| Working pressure versions | Compact branch: 7.5 / 8.5 / 10.5 / 13 / 16 bar(e); GA 22+: 7.5 / 8.5 / 10.5 / 13 bar(e) |
| Free air delivery | up to 65.2 l/s (compact branch); up to 73.5 l/s (GA 22+) |
| Noise level | 67 dB(A) on both branches |
| Weight | 440 / 495 kg (Standard / FF); 539 / 597 kg (GA 22+ Standard / FF) |
| Dimensions | Compact branch: 1225 x 695 x 1475 mm; GA 22+: 1267 x 790 x 1590 mm |
| Outlet connection | G1″ |
GA 22 50 Hz Pressure Versions
Unit performance of the compact branch is specified per pressure version, with the maximum working pressure of the Standard build quoted next to the reduced value of the FF build, whose dryer takes a small share of the pressure. The reference conditions are an absolute inlet pressure of 1 bar and an intake air temperature of 20 degrees Celsius:
| Max. working pressure, Standard / FF | FAD (l/s) | FAD (m³/min) | FAD (cfm) | Motor power |
|---|---|---|---|---|
| 7.5 bar(e) / 109 psig — FF 7.3 bar(e) / 105 psig | 65.2 | 3.91 | 138.1 | 22 kW / 30 hp |
| 8.5 bar(e) / 123 psig — FF 8.3 bar(e) / 120 psig | 63.5 | 3.81 | 134.5 | 22 kW / 30 hp |
| 10.5 bar(e) / 152 psig — FF 10.3 bar(e) / 149 psig | 53.3 | 3.20 | 113.0 | 22 kW / 30 hp |
| 13 bar(e) / 189 psig — FF 12.8 bar(e) / 185 psig | 49.0 | 2.94 | 103.8 | 22 kW / 30 hp |
| 16 bar(e) / 232 psig — FF 15.8 bar(e) / 229 psig | 41.2 | 2.47 | 87.2 | 22 kW / 30 hp |
GA 22+ 50 Hz Pressure Versions
The plus branch runs the upgraded flow path of the GA 11+-30 series and delivers its FAD across four pressure versions:
| Max. working pressure, Standard / FF | FAD (l/s) | FAD (m³/min) | FAD (cfm) | Motor power |
|---|---|---|---|---|
| 7.5 bar(e) / 109 psig — FF 7.3 bar(e) / 105 psig | 73.5 | 4.41 | 155.7 | 22 kW / 30 hp |
| 8.5 bar(e) / 123 psig — FF 8.3 bar(e) / 120 psig | 69.3 | 4.16 | 146.9 | 22 kW / 30 hp |
| 10.5 bar(e) / 152 psig — FF 10.3 bar(e) / 149 psig | 61.5 | 3.69 | 130.3 | 22 kW / 30 hp |
| 13 bar(e) / 189 psig — FF 12.8 bar(e) / 185 psig | 54.2 | 3.25 | 114.8 | 22 kW / 30 hp |
The noise level of 67 dB(A) applies to every pressure version of both branches, determined as the A-weighted emission sound pressure level at the work station according to ISO 2151. It is the lowest figure in this machine class, and it lets the GA 22 stand directly beside inspection benches, laboratories and packaging cells without a separate compressor room.
Dimensions and Weight
The compact branch measures 1225 mm deep, 695 mm wide and 1475 mm high, and weighs 440 kg as a Standard build, with the FF build between 491 and 495 kg depending on the pressure version. The GA 22+ measures 1267 mm deep, 790 mm wide and 1590 mm high and weighs 539 kg as a Standard build and 597 kg as an FF build. Both branches leave the factory on a G1″ outlet connection, and the 695 mm width of the compact branch fits through standard doors and onto mezzanine floors that exclude conventional industrial compressors.
Drive System and Rotors
New Rotors and IE2/IE3 Motors
The GA 22 works with new compression rotors paired with IE2 and IE3 high-efficiency motors, a combination built for robust continuous duty. The drive is gear-driven, which transfers the motor power to the element with higher efficiency and easier serviceability than a belt-driven design, and the gear-driven system gives the machine its high reliability across the service life. The whole drive train sits totally enclosed inside the canopy, protected against dirt and dust.
The GA 22+ Motor and Cabinet
The GA 22+ carries the upgraded drive chain of the GA 11+-30 series with IE3 and IE4 efficiency motors, and its motor bearings are grease-lubricated for life, which removes them from the maintenance schedule entirely. The upgraded flow path of this series lifted the free air delivery noticeably against the previous generation, and the machine meets Grade 1 of the GB19153-2019 energy efficiency standard. The electrical cabinet is force-cooled to hold the component temperature down and extend the lifetime of the electronics, and the innovative fan design cuts the fan power draw while controlling the noise emission of the machine.
Control and Monitoring
Elektronikon Slide-Key Controller
The compact branch is operated from the Elektronikon Slide-Key controller, whose built-in intelligent algorithms optimize the system pressure and reduce the overall energy consumption of the installation. Remote start and stop, fault alarms and maintenance reminders are included, and the built-in SMARTLINK remote monitoring keeps the machine status visible in real time. The controller holds the header pressure inside a narrow band, which stabilizes the network and trims the energy bill at the same time.
Elektronikon Touch and Multi-Unit Control
The GA 22+ runs the Elektronikon touchscreen generation with smart algorithms, remote start and stop, alarm output, maintenance scheduling and network diagnostics, and SMARTLINK remote monitoring on board. The controller holds two pressure bands that can be switched manually or automatically, and the Delayed Second Stop function keeps the motor off until the pressure really calls for it, which removes unnecessary unloaded running from low-load hours. An optional integrated compressor controller coordinates installations of two, four or six machines, so a GA 22+ can anchor a small compressor room without an external sequencer.
Oil Separation and Air Quality
The vertical oil-air separator of the compact branch reduces the oil carryover and keeps the compressed air clean, and its optimized size minimizes the air loss during load and unload cycles. The independent cooling fan and the high-efficiency cooler hold the oil temperature in the right window across the duty cycle. The FF builds integrate the refrigerant dryer with a loss-free electronic drain valve, so the condensate leaves the machine without wasting compressed air, and the dryer uses the environmentally friendly R134a refrigerant. With the built-in Class 1 internal filter the delivered air reaches a residual oil content of 0.01 ppm, and optional filters complete the treatment chain for quality-critical applications.
Energy Recovery and the 5-Year Warranty
During compression up to 90 percent of the electrical input turns into heat, and the integrated energy recovery system returns up to 75 percent of that input power as hot water without any impact on the compressor operation. The recovered heat feeds auxiliary heating, industrial processes and sanitation facilities, which shortens the payback of the installation. On top of the energy side, the machine carries a 5-year factory warranty or 24,000 hours of actual operation, whichever comes first, once the machine is registered after installation and commissioning.
Applications of the GA 22
The GA 22 covers the daily duties of production plants that run compressed air across one or more shifts: automotive service centers, plastics and injection auxiliaries, food packaging lines and general manufacturing cells. The 10.5 and 13 bar versions serve high-pressure users such as pressure testing benches and die cutting, and the 16 bar version of the compact branch covers dedicated high-pressure networks that no other model of this class reaches. Plants that currently run two small piston compressors consolidate onto this machine for the rotary screw efficiency, the 67 dB(A) noise level and the sealed gear drive. Plants that outgrow the flow of the GA 22 stay in the same series logic and step into the GA 26, which tops the compact range with up to 72.9 l/s.
Service and Support Around the GA 22
The gear-driven transmission of the GA 22 makes the routine services a short planned stop, and the controller reports the maintenance reminders before a consumable reaches its limit, with SMARTLINK keeping the service organization informed remotely. Options such as the high-temperature model for 55 degrees Celsius as a Pack, food-grade oil, synthetic oil, a dryer bypass, a condensate separator with automatic drain and on-site witness testing adapt the machine to special environments and quality demands. Seadweer supports the GA 22 and both of its branches with original spare parts, service kits and technical documentation for every pressure version.
FAQ
Which pressure versions does the GA 22 offer?
The compact branch is available in 7.5, 8.5, 10.5, 13 and 16 bar(e) versions, and the GA 22+ in 7.5, 8.5, 10.5 and 13 bar(e) versions. The FF builds trade a small amount of maximum working pressure for the integrated dryer.
How much air does the GA 22 deliver?
The GA 22 delivers up to 65.2 l/s (138.1 cfm) at 7.5 bar and 41.2 l/s at 16 bar. The GA 22+ delivers up to 73.5 l/s (155.7 cfm) at 7.5 bar on the same 22 kW motor rating.
What is the difference between the GA 22 and the GA 22+?
Both branches share the 22 kW / 30 hp motor rating and the 67 dB(A) noise level. The GA 22 offers the five-version pressure ladder up to 16 bar(e) on the compact frame, while the GA 22+ adds the upgraded flow path with up to 73.5 l/s, the Elektronikon touchscreen generation and the 3 degrees Celsius dryer.
What is the difference between Standard and FF?
Standard is the complete compressor without integrated air treatment, while FF integrates the refrigerant dryer and the loss-free condensate drain inside the same canopy. The FF build delivers a pressure dew point of 5 degrees Celsius on the GA 22 and 3 degrees Celsius on the GA 22+.
How loud is the GA 22?
The sound pressure level at the work station is 67 dB(A) for every pressure version of both branches, determined according to ISO 2151. That is the lowest figure in the class and allows the machine to sit close to production and inspection areas.
How heavy is the GA 22?
The GA 22 weighs 440 kg as a Standard build and between 491 and 495 kg as an FF build. The GA 22+ weighs 539 kg as a Standard build and 597 kg as an FF build.
Paulo Mendes –
Our measuring room shares a wall with the compressor corner, and the old piston unit made the gauges drift twice a day. The GA 22 in the 10.5 bar FF version replaced it last spring, and the 67 dB(A) rating turned out to be exactly what the datasheet promised. The dryer keeps the dew point stable, the controller sends the service reminders on time, and nobody in the inspection room hears it running. Seadweer matched our flow profile to the right pressure version before we ordered.