OIL-INJECTED ROTARY SCREW COMPRESSORS GA 5- / GA + - + / GA VSD + 5-3 (-3 kw/-50 hp)
MEETING YOUR EVERY NEED FOR COMPRESSED AIR Atlas Copco's GA oil-injected screw compressors provide you with industry-leading performance and reliability and allow you to benefit from a low cost of ownership. Atlas Copco offers a trinity line-up of compressors that matches your precise requirements. The GA 5- stands for a high quality, reliable air compressor with the lowest initial investment. The GA + - delivers top performance in the fixed speed compressor market. Our premium product, the GA 5-3 VSD +, is a unique state-of-theart air compressor with unparalleled performance and energy savings.
GA 5- COMPACT ECONOMICAL COMPRESSORS Premium GA quality and optimal serviceability at the lowest initial investment. Good-quality, dry air thanks to the integrated dryer. Total control and assured efficiency with the Elektronikon controller. GA + - STATE-OF-THE-ART PERFORMERS Exceptional Free Air Delivery. Best-in-class power consumption and noise emission. Thanks to the integrated dryer, high quality dry air is guaranteed. Easy monitoring and maintenance thanks to the Elektronikon graphic controller with high-definition color display. GA 5-3 VSD + ULTIMATE ENERGY SAVERS On average 50% energy savings compared to traditional fixed speed compressors via advanced Variable Speed Drive + technology. Flexible pressure selection: -3 bar. Excellent-quality, dry air at the lowest energy cost thanks to the new, integrated dryer range. Easy monitoring and maintenance thanks to the Elektronikon graphic controller with high-definition color display. Innovative vertical design minimizes the required floor space while improving serviceability.
GA 5-: COMPACT ECONOMICAL COMPRESSORS Set to tackle your daily challenges, Atlas Copco s high-performance tank-mounted GA compressors beat any workshop solution. Ready to supply high-quality air, they keep your air network clean and your production up and running. Robust element & motor The GA 5- s compression element, the most used in its size, is combined with an IE3/NEMA Class efficiency motor. A 2-3% higher efficiency with the gear-driven drive train compared to belt-driven systems. Gear-driven drive train for best-in-class reliability and limited maintenance. 2 Advanced monitoring State-of-the-art monitoring using a simple Ethernet connection, thanks to the Elektronikon with a built-in server. Service and warning indications, error detection and compressor shut-down. Optional Elektronikon graphic controller for further enhanced remote monitoring features and service time indications.
3 High tech oil vessel Protection from oil contamination: extremely low oil carryover thanks to the vertical design of the oil vessel. Extremely low losses of compressed air during load/unload cycle thanks to minimized oil vessel size. 2 3 5 Integrated quality air solutions The integrated dryer avoids condensation and corrosion in the network. Optional filters for air quality up to ISO Class level (<0.0 ppm). Standard included water-separator. Additional energy savings with the dryer s no-loss electronic drain. 5 Easy installation A true plug-and-play solution, ideal machine for installation companies and OEMs. Optional integrated dryer, air filters and factory-mounted L receiver. Easy transportation by forklift. Remarkably compact footprint.
GA + -: INDUSTRY-LEADING PERFORMERS Re-engineered to break records, the industrial GA + - compressors have the best air delivery capacity in the industry. These all-in-one solutions provide high-quality air at the lowest possible operating costs and offer extended monitoring possibilities. Reliable motor & drive train The gearbox s maintenance-free transmission maximizes durability. The motor and drive train are greased for life to avoid improper re-lubrication. 2 3 Free Air Delivery is increased by 6-% and power consumption is reduced by 3-2% thanks to packaging and new compressor element. 2 Electrical cubicle Reduced cubicle temperature doubles the lifetime of the electrical components. Avoid damage with the electrical cubicle s standard phase sequence relay.
3 Advanced control High-tech Elektronikon graphic controller with warning indications, compressor shut-down and maintenance scheduling. Optional centralized control over up to 6 compressors via Elektronikon. Quality air solutions Integrated dryer range with counterflow heat exchanger, integrated water separator and optional Dryer Saver Cycle. 5 Energy-saving features Optional energy recovery system. Optional fan Saver Cycle, reducing energy consumption. The integrated dryer can be outfitted with optional UD+ filter, resulting in oil carry-over as low as 0.0 ppm. Water separation of nearly 00% in all conditions with the standard electronic no-loss drain and integrated water separator in the aftercooler.
GA 5-3 VSD+: ULTIMATE ENERGY SAVERS With its innovative vertical design, Atlas Copco's GA 5-3 VSD+ brings a game-changing revolution in the compressor industry. It offers Variable Speed Drive as standard, a compact motor and small footprint thanks to its in-house design and ipm (permanent magnet) technology. The GA VSD+ reduces energy consumption by on average 50%, with uptimes assured even in the harshest conditions. Interior Permanent Magnet (IPM) motor Very high efficiency: exceeds IE3. Compact, customized design for optimal cooling by oil. Designed in-house in Belgium. IP66 vs. IP55. No cooling air flow required. Oil-lubricated motor bearing: no (re)grease(ing), increased uptime. 2 Element Made by Atlas Copco. Robust and silent. 3 3 Direct drive 2 Vertical design, fewer parts. Oil-cooled, pressure-tight. No gears or belts, no shaft seal. Compact: footprint down 60%. Innovative fan Based on the newest technologies. In compliance with ERP5 efficiency. Low noise levels.
5 Robust oil filter/separator Integrated bypass valve with the oil filter. Easy maintenance. 6 Electronic no-loss water drain Included as standard. Efficient removal of condensate without loss of compressed air. Manual integrated bypass for effective condensate removal in case of power failure. 6 5 Elektronikon controller 9 Integrated smart algorithms reduce system pressure and energy consumption. Warning indications, maintenance scheduling and online status visualization. Graphic display of key parameters (day, week, month) and 32 language settings. Sentinel inlet valve No inlet arrestor. No blow off losses. Maintenance free. 9 VSD+ cubicle VSD+ superior to idling machines. Electrical components remain cool, enhancing lifetime of components. Dedicated drive for ipm technology motors. 5% DC choke as standard. Heat dissipation of inverter in separate compartment.
VSD + FOR 50% AVERAGE ENERGY SAVINGS* Atlas Copco s GA Variable Speed Drive + (VSD + ) technology closely matches the air demand by automatically adjusting the motor speed. Combined with the innovative design of the ipm (Permanent Magnet) motor, this results in average energy savings of 50% and an average cut of 3% in the lifecycle cost of a compressor. VSD + works with permanent, in-house designed permanent magnet motors. Why Atlas Copco Variable Speed Drive + technology? On average 50% energy savings with an extensive flow range (-00%). Integrated Elektronikon Graphic controller controls the motor speed and high efficiency frequency inverter. No wasted idling times or blow-off losses during operation. Compressor can start/stop under full system pressure without the need to unload with special VSD + motor. Eliminates peak current penalty during start-up. Minimizes system leakage due to a lower system pressure. EMC Compliance to directives (0/0/EG).
In almost every production environment, air demand fluctuates depending on different factors such as the time of the day, week or even month. Extensive measurements and studies of compressed air demand profiles show that many compressors have substantial variations in air demand. Air demand Air demand Energy consumption Air demand Air demand Time Energy consumption Fixed speed load/unload Energy consumption Time GA VSD+ energy consumption 50% SAVINGS GA Fixed Speed Energy GA VSD+ Investment Maintenance * Compared to fixed speed compressors, based on measurement performed by an independent energy audit agency.
A STEP AHEAD IN MONITORING AND CONTROLS The next-generation Elektronikon operating system offers a great variety of control and monitoring features that allow you to increase your compressor s efficiency and reliability. To maximize energy efficiency, the Elektronikon controls the main drive motor and regulates system pressure within a predefined and narrow pressure band. GA 5-: Elektronikon controller Improved ease of use: intuitive navigation system with clear pictograms and extra th LED indicator for service. Visualization through web browser using a simple Ethernet connection. Easy to upgrade. Increased reliability: more durable keyboard. Key features: Automatic restart after voltage failure. Delayed Second Stop function. Option to upgrade to the advanced Elektronikon graphic controller. GA + - & GA 5-3 VSD + : Advanced Elektronikon graphic controller Improved user-friendliness: 3.5-inch high-definition color display with clear pictograms and extra th LED indicator for service. Internet-based compressor visualization using a simple Ethernet connection. Increased reliability: new, user-friendly, multilingual user interface and durable keyboard. Key features: Automatic restart after voltage failure. Dual pressure set point. More flexibility: four different week-schedules that can be programmed for a period of 0 consecutive weeks. On-screen Delayed Second Stop function and VSD savings indication. Graphical indication Serviceplan. Remote control and connectivity functions. Software upgrade available to control up to 6 compressors by installing the optional integrated compressor controller.
Optional integrated compressor controller Install, with a simple license, the optional integrated compressor controller and get simple, central control to reduce system pressure and energy consumption in installations of up to (ESi) or 6 (ES6i) VSD compressors. Dual pressure set point & delayed second stop Most production processes create fluctuating levels of demand which, in turn, can create energy waste in low use periods. Using either the standard or graphic Elektronikon controller, you can manually or automatically create two different system pressure bands to optimize energy use and reduce costs at low use times. In addition, the sophisticated Delayed Second Stop (DSS) runs the drive motor only when needed. As the desired system pressure is maintained while the drive motor s run time is minimized, energy consumption is kept at a minimum. Without DSS With DSS Power Power Loaded Loaded Unloaded Unloaded Stopped Time Saved energy Time Recover and save energy As much as 90% of the electrical energy used by a compressed air solution is converted into heat. Using Atlas Copco s integrated energy recovery systems, it is feasible to recover up to 5% of that power input as hot air or hot water without any adverse influence on the compressor s performance. Through efficient usage of the recovered energy, you bring about important energy cost savings and obtain a high return on investment. Applications Auxiliary or main heating of warehouses, workshops Industrial process heating Water heating for laundries, industrial cleaning and sanitary facilities Canteens and large kitchens Food industry Chemical and pharmaceutical industries Drying processes
EXCELLENCE IN QUALITY AIR Untreated compressed air contains moisture, aerosols and dirt particles that can damage your air system and contaminate your end product. The resulting maintenance costs can far exceed air treatment costs. GA compressors provide the clean, dry air that improves your system s reliability, avoiding costly downtime and production delays, and safeguarding the quality of your products. Integrated purity Many Atlas Copco compressors (Full Feature option) come with an integrated dryer that efficiently removes moisture, aerosols and dirt particles to protect your investment. This quality air expands the life of equipment, increasing efficiency and ensuring quality in your final product. Main benefits of the new, integrated dryer solutions Thanks to the Saver Cycle, based on an extra ambient sensor, the dryer will shut down when a normal dew point is reached, meaning that 2/3 of the dryer s power can be recuperated (standard on GA VSD +, optional for GA + ). Available in several variants, allowing you to gain high-quality air in all ambient conditions. The heat exchanger with integrated water separator minimizes the energy required to reach a certain air quality. Pressure dew point at 3 C on GA + and GA VSD + (00% relative humidity at C, 5 C on GA). The dryer s global warming potential has been reduced by %. This not only results from the refrigerant type R3a s environmentally-friendly characteristics, but also from the smaller volume that is needed (valid for both GA + and GA VSD + ). Can be outfitted with optional UD+ filter, allowing you to obtain the exact air quality you need for your specific application (DD and PD for GA 5-; UD+ for GA + - and GA 5-3 VSD + ). ISO QUALITY CLASS* DIRT PARTICLE SIZE WATER PRESSURE DEW POINT GA ** WATER PRESSURE DEW POINT GA + ** OIL CONCENTRATION Pack unit 3.-. 3 microns - - 3 ppm Full Feature unit 3.. 3 microns +5 C, F +3ºC, 3 F 3 ppm Full Feature unit with Class 2 integrated filter 2..2 micron +5 C, F +3ºC, 3 F 0. ppm Full Feature unit with Class integrated filter.. 0.0 microns +3 C, 3 F +3ºC, 3 F 0.0 ppm * The table values are maximum limits according to the respective ISO quality class. ** Water pressure dew point based on 00% RH at C/6 F.
TAILORED TO YOUR NEEDS Some applications may need or may benefit from additional options and more refined control and air treatment systems. To meet these needs, Atlas Copco has developed options and easily integrated compatible equipment providing the lowest cost compressed air. GA 5- GA + - GA 5-3 VSD + Integrated filter Class Integrated filter Class 2 Dryer bypass Integrated oil/water separator OSD - Electronic Water Drains (EWD) on coolers Air receiver drain EWD - - Oil retaining frame - Motor space heater - - Motor space heater + thermistors - Phase sequence relay Tropical thermostat - Freeze protection Heavy duty air inlet filter - Fan Saver Cycle - Compressor inlet pre-filter - Rain protection - Main power isolater switch Lifting device - Nema & Nema X cubicle (under release) - Relays for ES00 sequence selector - - Central control license (ESi) or 6 (ES6i) machines (on graphic) Elektronikon graphic controller* Food-grade oil Roto-Xtend duty oil Energy recovery - Modulating control - - High ambient temperature versions (55 C for pack, 50 C for FF) - - Compressor duct power fan (under release) - - - Dryer Save Cycle - * Optional for GA. : Standard : Optional - : Not available
TECHNICAL SPECIFICATIONS GA 5- Max. working pressure Capacity FAD* COMPRESSOR TYPE Installed motor power Full Feature bar(e) psig bar(e).5.5 09.3.5 6.3 psig cfm kw hp Weight (kg) Noise level** db(a) Full Feature l/s m³/h 05 5. 6.2 96.9 5 529 3.6 5 92. 5 529 50 Hz VERSION GA 5 GA GA GA 0 0 5 9. 3.5 36.2 0.2 5 529 3 3 9 2. 5 32. 6.6 6. 5 529.5.5 09.3 05 56.5 3. 9..5 6 6 559.5 6.3 52.5 9.3.5 6 6 559 0 0 5 9. 69.2 99.6.5 6 6 559 3 3 9 2. 5 39.5 2.2 3..5 6 6 559.5.5 09.3 05 6.6 232.6 3 6 0 55.5 6.3 62..6 32.3 6 0 55 0 0 5 9. 5.2 95..9 6 0 55 3 3 9 2. 5.6. 0 6 0 55.5.5 09.3 05 2. 2. 5.3 69 90 55.5 6.3 0.5 3. 9.5 69 90 55 0 0 5 9. 66. 23 0. 69 90 55 3 3 9 2. 5 56.2 2.3 9. 69 90 55 60 Hz VERSION GA 5 GA GA GA 00. 0.2 0 5. 63. 96.2 5 529 9. 32.9 2.5 9. 5 529 50 0. 5 0.3 9 3.2 3.5 5 529 5 2.5 2.3.9.2.5 5 529 00. 0.2 0 56.5 3. 9..5 6 6 559 9. 32.9 2 5. 6.5 09..5 6 6 559 50 0. 5 0.3 9 5.6 6.2 96..5 6 6 559 5 2.5 2.3.6 6.9.5 6 6 559 00. 0.2 0 66 23.6 39.9 6 0 55 9. 32.9 2 59.2 23..5 6 0 55 50 0. 5 0.3 9 53. 93.3 3. 6 0 55 5 2.5 2.3. 2. 0.3 6 0 55 00. 0.2 0.3.5 5.5 69 90 55 9. 32.9 2 69.2 29. 6. 69 90 55 50 0. 5 0.3 9 62.5 2 32.5 69 90 55 5 2.5 2.3 5.6.. 69 90 55 Intake air Air/oil mixture Oil H Wet compressed air Condensate Dry air Gaseous coolant Liquid coolant W Compressed air without free water L Dry compressed air GA 5- (STANDARD) GA 5- (FULL FEATURE) H: 2 mm, H2: 932 mm, 3 L: 5mm, 69 L2: mm, 5 W: 33 mm, 33 H: 2 mm, L: 5 mm, 69 W: 33 mm, 33 Water Refrigerant gas/liquid mixture High pressure, hot refrigerant gas Low pressure, cool refrigerant gas High pressure refrigerant liquid Low pressure refrigerant liquid
TECHNICAL SPECIFICATIONS GA 5-3 VSD+ Maximum working pressure Capacity FAD* min-max COMPRESSOR TYPE Installed motor power Weight (kg) Noise level** bar(e) GA 5 VSD+ GA VSD+ GA VSD+ GA VSD+ GA VSD+ GA 3 VSD+ Full Feature 6 99 2 6 99 2 6 99 2 5 6 99 2 32-. 6 36 0 psig l/s m³/h cfm kw hp db(a) 5.5 0.2-2.3.9-52.3 5.2-9.6 5 02.-..6-50.5 5.0-.6 5 9.5 3 6.-.5 2.5-2..-5.2 5 2.5.3-2.9.3-00. 5.5-59. 5 5.-63.9 5.-2 02.9-62.5 53.6-2 3.6-32. 6 36 0 9.5 3.-53.6 6.6-93 36.2-3.6 6 36 0 2.5 6.-3.5 59-56.6 3.-92.2 6 36 0 5 5.3-6.9 55.-. 32.-62.9 6 363 5 02 5-5. 5-. 3.-59. 6 363 5 9.5 3.3-.2 62.3-23. 36.-3.2 6 363 5 2.5.-5. 6.6-9. 36.2-.6 6 363 5 5.9-6.3 53.6-. 3.6-2.9 6 33 90 02.5-5.5 52.2-..-.2 6 33 90 9.5 3 -. 6.2-.2 36-66. 6 33 90 2.5 6.-6.5 59-232.2 3.-36. 6 33 90 5 5.-9 5.-2. 32-. 0 6 36 02 5-9. 5-0.6 3.-6. 0 6 36 9.5 3.-5.6 6.6-.2 36.2-. 0 6 36 2.5 6.-2 60.-9.2.-52.6 0 6 36 5 5.3-6.5 55.-9. 32.-. 3 50 6 36 02.-5 53.3-3.-23. 3 50 6 36 9.5 3.-02.3 6.6-36.3 36.2-. 3 50 6 36 2.5 6.-6. 59-32. 3.-3. 3 50 6 36 * Unit performance measured according ISO 2 ed. 09, annex E, latest edition. ** Mean noise level measured at a distance of m according to ISO : 0 using ISO 96/2 (sound intensity method); tolerance 3 db(a). Reference conditions: - Absolute inlet pressure bar (.5 psi). - Intake air temperature C, 6 F. FAD is measured at the following effective working pressures: - 5.5 bar(e) - bar(e) - 9.5 bar(e) - 2.5 bar(e) Maximum working pressure: - 3 bar(e) ( psig) Wet compressed air Condensate Dry compressed air Intake air 6 Air/oil mixture Oil 3 2 H 9 5* 0 6 W 5 L GA 5 VSD+ (STANDARD/ FULL FEATURE) GA -3 VSD+ (STANDARD/ FULL FEATURE) H: mm, 56 L: 6 mm, W: 60/95 mm, 2/39 H: 590 mm, 63 L: 0 mm, 3 W: /23 mm, 32/50 2 3 Inlet filter 2 Sentinel valve 3 Screw element Interior permanent magnet motor (ipm) 5 Air/oil vessel 6 Thermostatic bypass valve Oil filter Safety valve 9 Oil separator 0 Minimum pressure valve Solenoid valve 2 After-cooler 3 Fan Oil-cooler 5 Electronic drain (* mounted on after-cooler on models without dryer) 6 Dryer (Full Feature option) Condensation prevention cycle
TECHNICAL SPECIFICATIONS GA +- (50 HZ VERSION) Max. working pressure Capacity FAD* COMPRESSOR TYPE GA + GA 5+ GA + GA + GA + GA bar(e) psig bar(e) Weight (kg) Noise level** Installed motor power Full Feature psig l/s m³/h cfm kw hp db(a) Full Feature.5.5 09.3 05, 2,9 5,9 5 63 0 55.5.5 6.3 33, 2,, 5 63 0 55 0 0 5 9.,3 09, 6,2 5 63 0 55 3 3 9 2. 5,2 90, 53, 5 63 0 55.5.5 09.3 05 6,9 6, 99, 5 6 0.5.5 6.3 3, 5, 92,9 5 6 0 0 0 5 9. 39, 3,3, 5 6 0 3 3 9 2. 5 32,, 69,5 5 6 0.5.5 09.3 05 5, 9,2 23,2.5 0.5.5 6.3 5,3 95,5 5,.5 0 0 0 5 9., 5,3 03,2.5 0 3 3 9 2. 5,,0,.5 0.5.5 09.3 05 6,2,5,6 66 55 55.5.5 6.3 6,5 232,2 36, 66 55 55 55 0 0 5 9. 5, 9,2 23,2 66 55 3 3 9 2. 5 50, 2,5 0,5 66 55 55.5.5 09.3 05 9, 2,3 69,2 6 5 595.5.5 6.3 6,2 2,3 6,5 6 5 595 0 0 5 9. 69,3 29,5 6,9 6 5 595 3 3 9 2. 5 60,, 2, 6 5 595.5.5 09.3 05 90,0 32,0 90, 0 6 50 60.5.5 6.3 6, 3,0 3,2 0 6 50 60 0 0 5 9. 9, 2,3 69,2 0 6 50 60 3 3 9 2. 5 6, 2,3 5,6 0 6 50 60 Standard Full Feature version (FF) 0 6 6 2 9 9 3 2 5 9 3 5 Air flow 2 Oil flow Refrigerant flow Air intake filter Oil 6 Refrigerant compressor 2 Air intake valve 2 Oil-cooler Condenser 3 Compression element 3 Hermostatic bypass valve Liquid refrigerant dryer/filter Non return valve Oil filter 9 Thermostatic expansion valve 5 Air/oil separator vessel 5 Oil stop valve Evaporator 6 Minimum pressure valve 2 Hot gas bypass valve After-cooler Accumulator Air-air heat exchanger 9 Water separator with drain 0 DD/PD filters (optional)
TECHNICAL SPECIFICATIONS GA + - (60 HZ VERSION) COMPRESSOR TYPE Max. working pressure Full Feature Capacity FAD* Installed motor power Noise level** bar(e) psig bar(e) psig l/s m³/h cfm kw hp db(a) Weight (kg) GA + 00. 0.2 0 3,0 33,2, 5 63 0 55 Full Feature 9. 32.9 2 32,0 5,2 6, 5 63 0 55 0. 5 0.3 9 29,3 05,5 62, 5 63 0 55 5 2.5 2.3,3 9, 53,6 5 63 0 55 GA 5 + 00. 0.2 0,3 3,9 02, 5 6 0 9. 32.9 2 2,9 5, 90,9 5 6 0 50 0. 5 0.3 9 39,, 3,5 5 6 0 5 2.5 2.3 33,9,0,9 5 6 0 GA + 00. 0.2 0 59,6 2,6,.5 66 0 9. 32.9 2 53,3 9,9 3,0.5 66 0 50 0. 5 0.3 9, 2, 0,3.5 66 0 5 2.5 2.3 2,5 53,0 90,.5 66 0 GA + 00. 0.2 0 0,3 3, 9,0 6 55 55 9. 32.9 2 62,9 6, 33,3 6 55 55 50 0. 5 0.3 9 56,9,,6 6 55 55 5 2.5 2.3 52,3,3 0,9 6 55 55 GA + 00. 0.2 0,2 292,3 2, 6 5 595 9. 32.9 2, 6, 5, 6 5 595 50 0. 5 0.3 9 6,,6 2,9 6 5 595 5 2.5 2.3 60, 2,5 2, 6 5 595 GA 00. 0.2 0 90, 32, 9,0 0 6 50 60 9. 32.9 2, 2,,3 0 6 50 60 50 0. 5 0.3 9, 2,6 63,5 0 6 50 60 5 2.5 2.3 0, 2,,6 0 6 50 60 * Unit performance measured according to ISO 2, Annex C, latest edition. ** Mean noise level measured according to ISO /Pneuro/Cagi PNNTC2 test code; tolerance 2 db(a). Reference conditions: Absolute inlet pressure bar (.5 psi) Intake air temperature C, 6 F FAD is measured at the following working pressures:.5 bar versions at bar bar versions at bar 0 bar versions at 9.5 bar 3 bar versions at 2.5 bar Pressure dew point of integrated refrigerant dryer of GA + - GA 5 + - GA + - GA + - GA + - GA at reference conditions 2 C to 3 C, 36 F to 3 F. H L GA + - GA + H: 5 mm, 5 L: 5 mm, 9 W: 692 mm, 2 W GA + - GA H: 5 mm, 5 L: 5 mm, 9 W: mm, 3
COMMITTED TO SUSTAINABLE PRODUCTIVITY We stand by our responsibilities towards our customers, towards the environment and the people around us. We make performance stand the test of time. This is what we call Sustainable Productivity. www.atlascopco.com 29 09 6, Atlas Copco Airpower NV, Belgium. All rights reserved. Designs and specifications are subject to change without notice or obligation. Read all safety instructions in the manual before usage.