Atlas Copco GA55 Instruction Book
Stationary air compressor
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- User manual (31 pages) ,
- Instruction book (212 pages) ,
- User manual (45 pages)
Related Manuals for Atlas Copco GA55
Summary of Contents for Atlas Copco GA55
- Page 1 Atlas Copco Stationary Air Compressors GA55 - GA75 - GA55 W - GA75 W - GA90C - GA90C W Instruction Book...
- Page 2 Atlas Copco parts list: ........
- Page 3 Atlas Copco Stationary Air Compressors GA55 - GA75 - GA55 W - GA75 W - GA90C - GA90C W Instruction Book Important 1. This book applies exclusively to compressors from serial number AII-465 000 onwards. 2. This book must be used together with the “User manual for Elektronikon regulator for GA5 up to GA90C”.
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Page 4: Table Of Contents
6 Problem solving ......30 2.3.1 For GA55/GA55 W ....18 2.3.2 For GA75/GA75 W . -
Page 5: Leading Particulars
GA are stationary, single-stage, oil-injected screw compressors start, stop and emergency stop buttons. An electric cabinet driven by an electric motor. GA55, GA75 and GA90C are air- comprising the motor starter is located behind this panel. The cooled, whereas GA55 W, GA75 W and GA90C W are water- compressors are provided with an automatic condensate drain cooled. -
Page 6: Air Flow
Instruction book 1.1.1 Air flow (Fig. 1.6) Air drawn through filter (AF) and open inlet valve (IV) into Check valve (CV) prevents blow-back of compressed air when compressor element (E) is compressed. Compressed air and the compressor is stopped. Minimum pressure valve (Vp) oil flow into air receiver/oil separator (AR) via check valve prevents the receiver pressure from dropping below a minimum (CV). -
Page 7: Oil System
Instruction book 1.1.2 Oil system (Fig. 1.6) In air receiver/oil separator (AR), most of the oil is removed By-pass valve (BV) starts opening the oil supply from cooler from the air/oil mixture centrifugally. The balance is removed (Co) when the oil temperature has increased to the above- by oil separator element (OS). - Page 8 Instruction book 50346F Air filter Oil filler plug Oil separator element Air receiver Minimum pressure valve Oil cooler by-pass valve Oil level gauge Dryer Air cooler Fan motor Air inlet pipe Oil drain plug, air receiver Fig. 1.4 Rear view of GA75 Full-feature Automatic condensate drain outlet Manual condensate drain valve Pictograph, automatic condensate drain outlet...
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Page 9: Cooling And Condensate Drain Systems
Instruction book 1.1.3 Cooling and condensate drain systems (Fig. 1.6) 1.3 Elektronikon regulator The cooling system comprises air cooler (Ca) and oil cooler The control system consists of an electronic regulator and a (Co). On air-cooled compressors, the cooling air is generated control panel. - Page 10 Instruction book 2920 1381 02...
- Page 11 Instruction book Air filter Condensate trap On Full-feature also: Drive motor Fan, condenser Air receiver/oil separator Fan motor Refrigerant compressor Air outlet valve Oil filters Motor, condenser fan Oil cooler by-pass valve Oil separator element PSHH90 High pressure shut-down Air cooler PDT1 Pressure sensor, oil separator switch Control module...
- Page 12 Instruction book 2920 1381 02...
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Page 13: Control Panel
Instruction book SENSORS/LOADING SOLENOID CONTROL MODULE (E1) MOTORS VALVE Start button Drive motor PDT1 Pressure sensor, pressure Blocking relay Fan motor 3) difference over oil separator Auxiliary relay, star Fan motor, electric cabinet 5) PT20 Pressure sensor, air outlet contactor TT11 Temperature sensor, Auxiliary relay, delta... -
Page 14: Function Keys
Instruction book Ref. Desig- Function nation Stop button Push button to stop the compressor. LED (1) goes out. The compressor will stop after running in unloaded condition for 30 seconds. Emergency Push button to stop the compressor stop button immediately in case of emergency. After remedying the trouble, unlock the button by pulling it out (on earlier production units by turning it to the left). -
Page 15: Menu-Driven Control Programs
Instruction book Abbre- Desig- Function Program/Function Description viation nation Test Allows a display test. Modify To modify programmable settings More More To have a quick look at the compressor status Modify settings Modifying the settings for regulation Prog Program To program modified settings (e.g. -
Page 16: Air Dryer On Ga Full-Feature
1) The valve starts opening at 60 degrees celsius and is fully open at 75 degrees celsius for 13 bar and 175 psi compressors. 2) See User manual for Elektronikon regulator, section “Timer submenu”. 3) Air-cooled compressors only. 4) Water-cooled compressors only. 5) For high-temperature versions only (consult Atlas Copco). 2920 1381 02... -
Page 17: Installation
Instruction book 2 Installation 2.1 Dimension drawings (Figs. 2.1 and 2.2) Fig. 2.1 Dimension drawing, GA55/75 Fig. 2.2 Dimension drawing, GA90C 2920 1381 02... -
Page 18: Installation Proposal
Instruction book 2.2 Installation proposal (Fig. 2.3) Fig. 2.3 Installation proposal (typical example of GA55/75) 2920 1381 02... - Page 19 The drain pipes to the drain collector must not dip into the water of the drain collector. Atlas Copco has oil/ water separators (type OSD) to separate the major part...
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Page 20: Electric Cable Size
Instruction book 2.3 Electric cable size 1) 2.3.1 For GA55/GA55 W 2) 3) Supply Frequency - LC cable MC cable LC cable MC cable voltage Approval GA Pack GA Pack GA Full-feature GA Full-feature (mm²/AWG) (mm²/AWG) (mm²/AWG) (mm²/AWG) 50 - IEC... -
Page 21: Electrical Connections
12 Stop compressor before cleaning coolers 13 Warning: voltage 14 Warning: potential risk of sudden releasing of spring underneath cover of unloader during disassembling, have possible Fig. 2.4 Pictographs (typical examples) repair carried out by Atlas Copco 2920 1381 02... -
Page 22: Cooling Water Requirements
2.6 Cooling water requirements Following requirements are given as a general rule to prevent 3.1 Initial start-up cooling water problems. If in any doubt, consult Atlas Copco. 3.1.1 Safety The operator must apply all relevant safety precautions, Recommended maxima - Recirculating Open including those mentioned in this book. -
Page 23: Moving/Lifting
Consult Atlas Copco. 3.1.6 Compressor control modes Attention Have the modifications checked by Atlas Copco. Stop the The electronic regulator has two switches (CMS1/2-Fig. 1.7) compressor and switch off the voltage before connecting to select following compressor control modes (0 = open / 1 = external equipment. -
Page 24: Before Starting
8. Check the oil level. The pointer of the level gauge (Gl-Fig. 3.5) should register in the green or orange range. The bottle with Atlas Copco Roto-injectfluid (4-Fig. 3.1) can be used for topping up. Check section 3.2 for lubrication of the compressor element. -
Page 25: Starting
3.3 Starting (Fig. 1.9) 4) must never exceed the value specified in section 7.5. Consult Atlas Copco if condensate should be formed during frequent unloading periods. Important For GA Full-feature, switch on the voltage 4 hours before starting to energize the crankcase heater of the refrigerant compressor. -
Page 26: Checking The Display
LED (3) is alight or blinks. Consult the User manual underneath cover of unloader during disassembling, for Elektronikon regulator, section “Status data submenu”. have possible repair carried out by Atlas Copco 3. The display (4-Fig. 1.9) will show a service message if one Arrow, motor rotation direction (depends on of the monitored components is to be serviced;... -
Page 27: Manual Control
1. Stop the compressor and close the air outlet valve. Water inlet 2. Switch off the voltage and disconnect the compressor from Water outlet the mains. 3. Depressurize the compressor. Fig. 3.7 View on coolers (GA55/75 W) 2920 1381 02... -
Page 28: Maintenance
1) Attention For overhauling or carrying out preventive maintenance, service kits are available. See section 4.6. Atlas Copco offers several Footnotes chapter 3 types of Service contracts, relieving you of all preventive maintenance work. For more details, consult your nearest Atlas 1) Consult User manual for Elektronikon regulator, section Copco representative. - Page 29 3. By unscrewing the cap one or two turns and retightening it or by pulling the valve lifting lever. 4. Recommended oil: Atlas Copco Roto-injectfluid. For the change interval in extreme conditions of temperature, humidity or cooling air, consult Atlas Copco.
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Page 30: Oil Specifications
Collect the oil in a collector and deliver it to the local oil collection service. It is strongly recommended to use Atlas Copco Roto-injectfluid. 7. Reinstall plugs (DP1 up to DP3) and fill the air receiver This is special oil for screw compressors which keeps the with oil until the level reaches the filler plug opening. - Page 31 1) Use only authorized parts. Any damage or malfunction by the in following quantities: use of unauthorized parts is not covered by Warranty or Product Liability. 2) Whichever interval comes first. The local Atlas Copco Sales Quantity Ordering number Company may overrule this schedule depending on the working conditions of the compressor.
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Page 32: Adjustments And Servicing Procedures
Replace valve. parts under the coolers. If it is necessary to wash the coolers b Inlet valve (IV) stuck in closed position. with a cleansing agent, consult Atlas Copco. b Have valve checked. c Leak in control air flexibles. -
Page 33: Principal Data
Reading: Below 1 bar e Dryer piping clogged because of ice formation. Shown: When using the key <<More>> (5-Fig. 1.9) 9) e Have refrigerant system checked by Atlas Copco. Sensor: PDT1-Fig. 1.6 7 Element outlet 1) or air outlet temperature above Ref. -
Page 34: Maximum Settings Of Overload Relay, Circuit Breaker And Fuses
Instruction book 7.3 Maximum settings of overload relay, circuit breaker and fuses 7.3.1 For GA55/GA55 W Supply Frequency Circuit breaker Overload Fuses Fuses Fuses voltage Q15 11) relay F21 CSA HRCII-C UL Class K5 50 Hz - IEC 50 Hz - IEC... -
Page 35: Settings Of Dryer Switches
Instruction book Supply Frequency Circuit breaker Overload Fuses Fuses Fuses voltage Q15 11) relay F21 CSA HRCII-C UL Class K5 440-460 60 Hz - IEC 440-460 60 Hz - CSA/UL 60 Hz - IEC 60 Hz - CSA/UL 7.4 Settings of dryer switches (on GA Full-feature) Fan control switch (PSR90) - Cut-out pressure . -
Page 36: Ga55/Ga55 W Pack
Instruction book 7.5.3 GA55/GA55 W Pack 1) 7) Compressor type 7.5 bar 8 bar 10 bar 13 bar 100 psi 125 psi 150 psi 175 psi Frequency ....Hz Maximum (unloading) pressure . -
Page 37: Ga75/Ga75 W Pack
Instruction book 7.5.5 GA75/GA75 W Pack 1) 7) Compressor type 7.5 bar 8 bar 10 bar 13 bar 100 psi 125 psi 150 psi 175 psi Frequency ....Hz Maximum (unloading) pressure . -
Page 38: Ga90C/Ga90C W Pack
Instruction book 7.5.7 GA90C/GA90C W Pack 1) Compressor type 7.5 bar 10 bar 13 bar 100 psi 125 psi 150 psi 175 psi Frequency ....Hz Maximum (unloading) pressure bar(e) 10.8 12.5... -
Page 39: Conversion List Of Si Units Into Us/British Units
Instruction book 7.6 Conversion list of SI units into US/British units 1 bar = 14.504 psi 1 l = 0.220 Imp gal (UK) 1 mbar = 0.401 in water column 1 g = 0.035 oz 1 l = 0.035 cu.ft 1 N = 0.225 lbf 1 kW = 1.341 hp (UK and US) 1 l/s = 2.117 cfm... - Page 40 Instruction book Notes: ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................2920 1381 02...
- Page 41 Instruction book Notes: ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................2920 1381 02...
- Page 42 Instruction book Notes: ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................29201381 02...
- Page 43 90 dB(A) shall wear ear protectors. condition. If damaged, replace it by genuine Atlas Copco material 7. Periodically check that: to prevent the sound pressure level from increasing.
- Page 44 - we simply call it the Atlas Copco way. It builds on interaction, on long- term relationships and involvement in the customers’ process, needs and objectives. It means having the flexibility to adapt to the diverse demands of the people we cater for.