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2920 1454 00

Instruction book

1 LEADING PARTICULARS

1.1 General description

transformers, fan motor overload relay, etc. is located behind

this panel. The compressor is also provided with an automatic

condensate drain system.

GA Workplace Full-feature

GA Workplace Full-feature are additionally provided with an

air dryer (1-Fig. 1.4) which removes moisture from the

compressed air by cooling the air to near freezing point and

automatically draining the condensate.

GA VSD (Variable Speed Drive) compressors are air-cooled

stationary, single-stage, oil-injected screw compressors, driven

by an electric motor.

GA Workplace (Fig. 1.1)

The compressors are enclosed in a sound-insulated bodywork.

The front panel comprises an emergency stop button (S3) and

an Elektronikon control module (E1) including the start and

stop buttons. An electric cabinet comprising fuses,

E1 Elektronikon control module

S3 Emergency stop button

Fig. 1.1 General view of GA18 VSD

Содержание GA18 VSD

Страница 1: ...85 2002 08 GA18 VSD and GA30 VSD Instruction Book www atlascopco com Copyright 2002 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 E...

Страница 2: ...las Copco Roto injectfluid 23 4 4 2 Mineral oil 23 4 5 Oil change 23 4 6 Oil filter change 23 4 7 Storage after installation 23 4 8 Service kits 24 5 Adjustments and servicing procedures 24 5 1 Air filter 24 5 1 1 Recommendations 24 5 1 2 Servicing 24 5 2 Coolers 24 5 3 Safety valve 24 6 Problem solving 25 7 Principal data 26 7 1 Readings on display 26 7 2 Setting of safety valve 26 7 3 Settings o...

Страница 3: ...essed air by cooling the air to near freezing point and automatically draining the condensate GA VSD Variable Speed Drive compressors are air cooled stationary single stage oil injected screw compressors driven by an electric motor GA Workplace Fig 1 1 The compressors are enclosed in a sound insulated bodywork The front panel comprises an emergency stop button S3 and an Elektronikon control module...

Страница 4: ...parator element PDT1 Differential pressure sensor oil separator Rf1 Nozzle Rf2 Restrictor SV Safety valve S2 Fan control switch TT11 Temperature sensor compressor element outlet Vp Minimum pressure valve Y1 Solenoid valve blow off 1 Condenser cooling fan 2 Refrigerant condenser 3 Condensate separator 4 Condensate trap dryer 5 Automatic condensate drain hose 6 Manual condensate drain valve 7 Capill...

Страница 5: ...ir oil mixture centrifugally The balance is removed by oil separator element OS The oil collects in the lower part of air receiver oil separator AR which serves as oil tank The oil system is provided with a by pass valve BV When the oil temperature is below 60 degrees Celsius by pass valve BV shuts off the oil supply from oil cooler Co Air pressure forces the oil from air receiver oil separator AR...

Страница 6: ...r draining after stopping the compressor 1 2 Regulating system If the air consumption is less than the air output of the compressor the net pressure increases When the net pressure is higher than the setpoint desired net pressure the regulator will decrease the motor speed If the net pressure keeps on rising when the motor runs at minimum speed the regulator will stop the motor If the motor is sto...

Страница 7: ...ervice plan has a programmed time interval If a time interval is exceeded a message will appear on display 12 Fig 1 7 to warn the operator to carry out the service actions belonging to that plan See section 4 1 Automatic restart 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 ...

Страница 8: ...2920 1454 00 8 Instruction book ...

Страница 9: ...tactor fan motor S3 Emergency stop button S5 Service switch S10 Main power isolating switch optional T1 T2 Transformer T3 Transformer Q15 Circuit breaker fan motor CONVERTER CABINET F1 2 Fuses F9 Circuit breaker K21 Line contactor U1 Frequency converter Z1 EMC filter CONTROL MODULE E1 I Start button K01 Auxiliary relay fan motor K02 Auxiliary relay K03 Auxiliary relay K04 Auxiliary relay solenoid ...

Страница 10: ...unction viation nation Add Add To add compressor start stop commands day hour Back Back To return to a previously shown option or menu Canc Cancel To cancel a programmed setting when programming parameters Del Delete To delete compressor start stop commands Help Help To find theAtlas Copco internet address Lim Limits To show limits for a programmable setting Main Main To return from a menu to the ...

Страница 11: ...ect this menu 1 4 Electric cabinet Fig 1 10 The electric cabinet mainly comprises transformers fuses a fan motor contactor and circuit breaker and for Full feature compressors also the dryer contactor The Elektronikon regulator and emergency stop button are fitted in the door of the cabinet The converter cabinet comprises the start and speed regulation unit The parameters of the start and speed re...

Страница 12: ...ondensate collects in condensate trap 4 and is automatically drained The cold dried air flows through heat exchanger 13 where it is warmed up by the incoming air Condensation in the air net cannot occur unless the air is cooled to below the pressure dewpoint 1 5 2 Refrigeration circuit Fig 1 2 Compressor M3 delivers hot high pressure refrigerant gas which flows through condenser 2 where most of th...

Страница 13: ...2920 1454 00 13 Instruction book 2 INSTALLATION 2 1 Dimension drawing Fig 2 1 Fig 2 1 Dimension drawing ...

Страница 14: ...25 25 25 50 50 50 Maximum fuse A 63 63 63 80 80 80 60 Hz compressors Compressor type GA18 VSD GA18 VSD GA30 VSD GA30 VSD Voltage V 380 460 380 460 Maximum line current Pack A 45 37 71 60 Full feature A 52 42 78 65 Cable size mm AWG size 25 4 25 4 50 1 50 1 Maximum fuse A IEC CSA UL 63 60 63 60 125 125 125 125 2 3 Installation proposal Fig 2 2 Ref Description recommendation L dP x d5 x P 450 x Qc1 ...

Страница 15: ...e ambient temperature consult Atlas Copco The maximum air temperature at the compressor intake opening is 40 degrees Celsius minimum 0 degrees Celsius For alternatives 1 and 3 the required ventilation to limit the compressor room temperature can be calculated as follows Ref Description recommendation Qv 1 06 N dT for GA VSD Workplace Qv 1 06 N 1 3 dT for GA VSD Workplace Full feature Qv required v...

Страница 16: ...ions including those mentioned in this book Altitude operation Consult Atlas Copco if operating above 1000 m Moving lifting The compressor can be moved by a lift truck using the slots in the frame Take care not to damage the bodywork during lifting or transport Before lifting reinstall the transport securing bolts see section 3 1 Make sure that the forks protrude from the other side of the frame T...

Страница 17: ... 9 Check the programmed settings 1 10 Start the compressor and run it for a few minutes Check that the compressor operates normally 3 1 1 Remote control Consult the User manual for Elektronikon II regulators section Configuration menu if it is desired to switch to the remote control mode Attention Consult Atlas Copco before connecting a remote start programmed stop button 3 2 Before starting If th...

Страница 18: ...filter service indicator 2 Nozzle 3 Palm grip 4 Expander 5 Hose clip air inlet hose 6 Air inlet hose Fig 3 3 View of blow off nozzle 1 Compressor element 2 Oil drain plug 3 Check valve oil stop valve 4 Arrow indicating the correct rotation direction of the drive motor Fig 3 4 View of compressor element oil until the level reaches the filler neck Tighten the plug 2 If the coloured part of air filte...

Страница 19: ...r local or remote the status of the compressor start stop timer on or off 3 the actual speed the loaded hours the motor starts the module hours the accumulated m the outlet pressure the pressure difference over the oil separator the compressor element outlet temperature the dewpoint temperature 4 the status of the fan motor overload protection normal or not 3 5 Stopping Fig 1 7 1 Press stop button...

Страница 20: ...y hand approx half a turn 24 Stop the compressor before cleaning the coolers 25 Switch off the voltage and wait for at least 6 minutes before removing the screen 26 Before connecting compressor electrically consult the Instruction book for the motor rotation direction 27 Warning voltage Fig 3 6 Pictographs Footnotes chapter 3 1 Consult the User manual for Elektronikon regulator sections regarding ...

Страница 21: ...ns A B or C Each plan has a programmed time interval at which all service actions belonging to that plan are to be carried out When reaching the interval a message will appear on the screen indicating which Service plans are to be carried out See User manual for Elektronikon regulator section Status data menu After servicing the intervals are to be reset See User manual for Elektronikon regulator ...

Страница 22: ... 2 Compressor motor 1 Fig 3 2 The correct type of grease can be ordered from Atlas Copco see section 4 8 The bearings must be regreased with KLÜBERQUIET BQH 72 102 Quantity 24 g per bearing Running See See notes Service Operation hours section below plan table 4000 4 2 4 A If Atlas Copco Roto injectfluid is used change oil and oil filter 1000 4 2 4 3 A If oil as specified in section 4 4 2 is used ...

Страница 23: ...g 3 only one turn to permit any pressure in the system to escape 2 Remove vent plug 5 Fig 1 4 Drain the oil by removing drain plugs 4 Fig 3 1 and 2 Fig 3 4 Collect the oil in a collector and deliver it to the oil collection service Fit and tighten the drain plugs after draining 3 Fill air receiver 6 with oil until the level reaches the filler neck Take care that no dirt drops into the system Reins...

Страница 24: ...mpressor Switch off the voltage Remove the air filter cover by turning it anti clockwise Remove the filter element Clean the cover Discard the filter element 2 Install a new element and the cover 3 Reset the service indicator 1 Fig 3 3 by pushing the reset knob 4 Reset the air filter service warning 1 5 2 Coolers Keep the coolers clean to maintain the cooling efficiency To facilitate external clea...

Страница 25: ...al a Air consumption exceeds air output of compressor a Check equipment connected b Choked air inlet filter element AF b Replace filter element c Solenoid valve Y1 malfunctioning c Remove and check valve replace if necessary d Oil separator element OS clogged d Replace element e Air leakage e Check and correct as necessary f Safety valve SV leaking f Remove and check Replace if not airtight after ...

Страница 26: ...ding Approx 4 degrees Celsius Shown Use key on main screen Fig 1 8 7 2 Setting of safety valve ASME 215 psig Others 14 5 bar e 7 3 Settings of circuit breakers Compressor type Circuit breaker Supply voltage Frequency Maximum setting GA18 VSD Fan motor Q15 Fig 1 10 400 V 50 Hz 1 3 A 500 V 50 Hz 1 0 A 380 V 60 Hz 1 3 A 460 V 60 Hz 1 3 A GA30 VSD Fan motor Q15 Fig 1 10 400 V 50 Hz 2 1 A 500 V 50 Hz 1...

Страница 27: ...50 Hz kW 26 1 26 3 25 8 GA FF 60 Hz kW 25 4 26 5 26 0 Sound pressure level 3 2 50 Hz dB A 68 67 67 60 Hz dB A 68 67 67 7 4 3 Specific data of GA30 VSD 1 Working pressure bar e 7 9 5 12 5 Frequency Hz 50 60 50 60 50 60 Number of compression stages 1 1 1 Maximum speed rpm 7200 6620 5930 Minimum working pressure bar e 4 4 4 Maximum air inlet temperature Celsius 40 40 40 Minimum air inlet temperature ...

Страница 28: ...tions shall be made to this vessel by welding drilling or other methods of mechanical work without written permission of the manufacturer 4 Original bolts have to be used after opening for inspection The maximum torque has to be taken into consideration for M12 bolts 73 Nm 18 for M16 bolts 185 Nm 45 5 Pressure and temperature of this vessel must be clearly indicated 6 The safety valve must corresp...

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