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Atlas Copco GA 11 VSD, Instruction Book

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Atlas Copco GA 11 VSD Instruction Book Download Page 16

2.4

Cooling system

Flow diagram

References

Description

A

Air inlet

B

Compressed air/oil

C

Compressed air

D

Oil

Description

The cooling system comprises air cooler (Ca) and oil cooler (Co). The cooling air is generated by
fans (FN1 and FN2). The fan of the air system (FN1) runs continuously during operation of the
unit. The fan of the oil system is controlled by the Elektronikon regulator. The regulator stops the
fan (FN2) to warm up the oil to an optimum in relation to the measured ambient temperature.

2.5

Condensate system

Condensate drains

Condensate drains on a Floor-mounted version

Instruction book

14

API161475

Summary of Contents for GA 11 VSD

Page 1: ...INSTRUCTION BOOK API161475 GA 11 VSD ...

Page 2: ......

Page 3: ... thereof is prohibited This applies in particular to trademarks model denominations part numbers and drawings This instruction book is valid for CE as well as non CE labelled machines It meets the requirements for instructions specified by the applicable European directives as identified in the Declaration of Conformity 2020 06 www atlascopco com ...

Page 4: ...1 2 2 AIR FLOW 12 2 3 OIL CIRCUIT 13 2 4 COOLING SYSTEM 14 2 5 CONDENSATE SYSTEM 14 2 6 REGULATING SYSTEM 15 2 7 ELECTRICAL SYSTEM 15 2 8 ELECTRICAL DIAGRAM 17 3 Elektronikon II regulator 19 3 1 CONTROL PANEL 19 3 2 FUNCTION KEYS 20 3 3 SCROLL KEYS 21 3 4 EMERGENCY STOP BUTTON 21 3 5 CONTROL PROGRAMS 21 3 6 MAIN SCREEN MENU 23 3 7 CALLING UP MENUS 24 3 8 QUICK LOOK AT THE ACTUAL COMPRESSOR STATUS ...

Page 5: ...SSOR CONTROL MODES 38 3 20 SERVICE MENU 39 3 21 SAVED DATA MENU 41 3 22 PROGRAMMABLE SETTINGS 42 4 Installation 44 4 1 DIMENSION DRAWINGS 44 4 2 INSTALLATION PROPOSAL 45 4 3 ELECTRICAL CONNECTIONS 48 4 4 PICTOGRAPHS 51 5 Operating instructions 52 5 1 INITIAL START UP 52 5 2 BEFORE STARTING 55 5 3 STARTING 55 5 4 DURING OPERATION 56 5 5 CHECKING THE DISPLAY 58 5 6 STOPPING 59 5 7 TAKING OUT OF OPER...

Page 6: ...ND OIL FILTER CHANGE 68 7 4 COOLERS 70 7 5 SAFETY VALVES 71 8 Problem solving 72 9 Technical data 74 9 1 READINGS ON DISPLAY 74 9 2 ELECTRIC CABLE SIZE 74 9 3 SETTINGS FOR FUSES 75 9 4 REFERENCE CONDITIONS AND LIMITATIONS 76 9 5 COMPRESSOR DATA 76 10 Instructions for use 77 11 Guidelines for inspection 78 12 Pressure equipment directives 79 13 Declaration of conformity 80 Instruction book 4 API161...

Page 7: ...f the voltage Depressurize the machine Lock Out Tag Out LOTO Open the power isolating switch and lock it with a personal lock Tag the power isolating switch with the name of the service technician On units powered by a frequency converter wait 10 minutes before starting any electrical repair Never rely on indicator lamps or electrical door locks before maintenance work always disconnect and check ...

Page 8: ...siccant bags must be removed before connecting the pipes 5 Air hoses must be of correct size and suitable for the working pressure Never use frayed damaged or worn hoses Distribution pipes and connections must be of the correct size and suitable for the working pressure 6 In case the device is a compressor the aspirated air must be free of flammable fumes vapors and particles e g paint solvents th...

Page 9: ...ystem is present in the air net close to the dryer safety valves must be installed in the vessels of the dryer Also consult following safety precautions Safety precautions during operation and Safety precautions during maintenance These precautions apply to machinery processing or consuming air or inert gas Processing of any other gas requires additional safety precautions typical to the applicati...

Page 10: ... tamper with the sound damping material 12 Never remove or tamper with the safety devices guards or insulations fitted on the machine Every pressure vessel or auxiliary installed outside the machine to contain air above atmospheric pressure shall be protected by a pressure relieving device or devices as required 13 Yearly inspect the air receiver Minimum wall thickness as specified in the instruct...

Page 11: ...with open flame for inspecting the interior of a machine pressure vessel etc 14 Make sure that no tools loose parts or rags are left in or on the machine 15 All regulating and safety devices shall be maintained with due care to ensure that they function properly They may not be put out of action 16 Before clearing the machine for use after maintenance or overhaul check that operating pressures tem...

Page 12: ...apply to machinery processing or consuming air or inert gas Processing of any other gas requires additional safety precautions typical to the application which are not included herein Some precautions are general and cover several machine types and equipment hence some statements may not apply to your machine Instruction book 10 API161475 ...

Page 13: ...ed bodywork The compressors are controlled by the Atlas Copco Elektronikon II regulator The electronic control module is fitted to the door on the front side An electric cabinet comprising the motor starter is located behind this panel Tank mounted version The compressors are mounted on an air receiver Front view GA 5 VSD up to GA 11 VSD Tank mounted typical example Ref Name AR Air receiver AV Air...

Page 14: ...erences Ref Description A Air inlet B Compressed air oil C Compressed air D Oil Description Air drawn in through filter AF and open inlet valve IV into compressor element E is compressed Compressed air and oil flow into the air receiver oil separator vessel OT Next the compressed air flows through minimum pressure valve Vp and the air cooler Air is discharged through outlet valve AV Instruction bo...

Page 15: ...ption The oil system is provided with a thermostatic bypass valve BV When the oil is cold the oil cooler is bypassed Air pressure forces the oil from oil separator vessel OT through the oil cooler and the oil filter OF to compressor element E In the oil separator vessel most of the oil is removed centrifugally the rest is removed by oil separator OS Instruction book API161475 13 ...

Page 16: ...generated by fans FN1 and FN2 The fan of the air system FN1 runs continuously during operation of the unit The fan of the oil system is controlled by the Elektronikon regulator The regulator stops the fan FN2 to warm up the oil to an optimum in relation to the measured ambient temperature 2 5 Condensate system Condensate drains Condensate drains on a Floor mounted version Instruction book 14 API16...

Page 17: ...on is less than the air output of the compressor the net pressure increases When the net pressure is higher than the set point 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 unload the compressor for 40 seconds after which the motor is stopped If the motor is stopped automatically and the ...

Page 18: ...Electric cabinet typical example References F Fuses K11 Contactor dryer K21 Line contactor PE Earth terminal T1 Transformer U1 Frequency converter Instruction book 16 API161475 ...

Page 19: ...sensing not used on VSD 5 Fault EWD 6 Contact pressure drop over DD filter 7 Contact pressure drop over PD filter 8 Remote pressure set selection open setpoint 1 closed setpoint 2 9 Remote emergency stop 10 Auxiliary contacts 11 Manual operation 12 Automatic operation 13 General warning 14 General shut down Instruction book API161475 17 ...

Page 20: ...or T1 Transformer U1 Frequency converter X103 X122 Connectors Reference Control module I Start button K01 Auxiliary relay fan motor K02 Auxiliary relay K03 Auxiliary relay K04 Auxiliary relay load unload K05 Auxiliary relay VSD K06 Auxiliary relay dryer control K07 Auxiliary relay manual automatic operation K08 Auxiliary relay general warning K09 Auxiliary relay general shut down O Stop button S3 ...

Page 21: ...ting to the right can be modified 5 Function keys Keys to control and program the compressor 6 Voltage on LED Indicates that the voltage is switched on 7 General alarm LED Is lit if a warning service warning or shut down warning condition exists 7 General alarm LED Flashes if a shut down condition exists if an important sensor is out of order or after an emergency stop 8 Automatic operation LED In...

Page 22: ...Back To return to a previously shown option or menu Canc To cancel a programmed setting when programming parameters Del To delete compressor start stop commands Help To find the Atlas Copco Internet address Lim To show limits for a programmable setting Main To return from a menu to the main screen Menu Starting from the main screen to have access to the submenus Menu Starting from a submenu to ret...

Page 23: ...ergency stop button Control panel In the event of an emergency press button S3 to stop the compressor immediately 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 the manual condensate drain valves to depressurise the air system Apply...

Page 24: ...Menu flow for GA 5 up to GA 11 VSD simplified Instruction book 22 API161475 ...

Page 25: ...w keys 1 2 and 3 are not used for some minutes the regulator will automatically return to the Main screen Whenever displayed on a submenu screen press the Main key F1 to return to the Main screen Example of Main screen Compr Outlet bar 7 0 rpm 2500 Menu F1 F2 F3 The display indicates The name of the sensor and its actual reading Messages regarding the compressor operating condition Just above the ...

Page 26: ... 1 can be used for a quick look at the actual compressor status After pressing the Menu F1 key the option Status data will be followed by a horizontal arrow Either press the tabulator key 2 to select this menu Or use the arrow down key 1 until the desired submenu is followed by a horizontal arrow and then press the tabulator key 2 to select this menu Instruction book 24 API161475 ...

Page 27: ... the regulator automatically adapts the operation of the compressor i e matching the compressor output to the air consumption Line 2 indicates whether the regulator is operating in local control or remote control mode Local control means that the start stop buttons on the keyboard are activated Remote control means that these functions are controlled remotely Line 3 indicates whether the timer whi...

Page 28: ...y a horizontal arrow Activate the menu by pressing the tabulator key 2 By pressing the scroll keys 1 a number of actually measured data can be found If one of the sensors is linked to a shut down service or warning function both the actually measured value as well as the corresponding shut down warning or service level can be called up by pressing key 2 3 10 Counters menu Control panel Function To...

Page 29: ...n the example above the display indicates that the compressor has delivered 230 x 1000 m3 If it should be required to modify the value of the indicated timer consult Atlas Copco 3 11 Test menu Control panel Function To carry out a display test i e to check whether the display and LEDs are still intact To run the regreasing program Procedure Starting from the Main screen see Main screen menu Press ...

Page 30: ...rizontal arrow The compressor will run for a programmed time interval at a programmed speed After carrying out all service actions in the relevant Service Plan reset the service warning see section Service menu 3 12 Modify parameters menu Function To modify a number of programmable settings Compressor motor settings see section Modifying compressor and motor settings Parameters see section Modifyi...

Page 31: ...1 bar 7 0 Menu Mod F1 F2 F3 The screen shows that the current setting is 7 0 bar e To modify this setting press the key Mod F2 the setting will flash The key Lim F2 can be used to find out the limitations for the parameter Use the scroll keys 1 to change the setting Press the key Prog F1 to program the new value or the key Canc F3 to cancel the modification operation The procedure to modify Setpoi...

Page 32: ...he procedure to modify other parameters is similar Fan Mot St Day 2400 Menu Mod F1 F2 F3 The regulator will not accept new values beyond the limits Press the key Lim to check the limitations for the parameter Consult section Programmable settings for the most important settings 3 15 Modifying protection settings Control panel Function To modify protection settings Shut down Shd e g for the compres...

Page 33: ...screen shows the current temperature 94 C and the shut down setting 120 C To modify the setting press the Mod key F2 the setting will flash The Lim key F2 can be used to find out the limits for the parameter Use the scroll keys 1 to change the setting Press Prog key F1 to program the new value or Canc F3 to cancel the modification operation The screen also shows a horizontal arrow indicating that ...

Page 34: ...hours The regulator will not accept new values beyond the limits Press the key Lim to check the limits for the parameter Consult Programmable settings for the most important settings Resulting service actions to be carried out Service actions according to At Service plan A and B 4000 running hours Service plan A B and C 8000 running hours Service plan A and B 12000 running hours Service plan A B a...

Page 35: ...s to modify the interval Press the Prog key F1 to program the new setting or the Canc key F3 to cancel the modification operation The procedure to modify the Service plans B C and D is similar 3 17 Programming clock function Control panel Function To program Time based start stop commands for the compressor Time based change over commands for the net pressure band Programming start stop and pressu...

Page 36: ...and must be programmed is followed by a horizontal arrow Press the tabulator key 2 the following screen appears Menu Mod Del F1 F2 F3 Press the key Mod F2 The first two dashes will flash Use the scroll keys 1 to enter 06 Press the tabulator key 2 to jump to the following two dashes Use the scroll keys to enter 15 Press the tabulator key to jump to the row of dashes Use the scroll keys to enter the...

Page 37: ... Activated changes to Activated Press the key Prog It is necessary to program the start stop commands in successive order time wise Program the commands from Monday till Sunday e g 07 30 Start Comp 07 30 Press Band 1 08 30 Press Band 2 18 00 Stop Comp Make sure that the timer function is activated Activated If not the programmed start stop commands will not be executed The timer can be deactivated...

Page 38: ...he minutes indication and the start stop pressure band indication Press the key Prog to program the new command or the key Canc to quit without reprogramming Adding a command at the end of an existing list Starting from the Main screen press the key Menu F1 press the arrow down key until the option Modify Params is followed by a horizontal arrow Activate the menu by pressing the tabulator key 2 Us...

Page 39: ...ess the key Mod Change this command to the new command in the example above 17 00 Press Band 2 Press the arrow down key and add the last command of the list in the example above 18 00 Stop Comp and press the key Prog Deleting a command Starting from the Main screen press the key Menu F1 press the arrow down key until the option Modify Params is followed by a horizontal arrow Activate the menu by p...

Page 40: ...n is desired scroll through the display until the option is followed by a horizontal arrow Select the option by pressing the tabulator key 2 For the option Time the second line on the screen indicates the actual setting e g 14 30 To modify this setting press the key Mod F2 the first field 14 will flash Use the scroll keys 1 to change the setting then press the tabulator key 2 to go to the next fie...

Page 41: ...option C C M is followed by a horizontal arrow and select it using the tabulator key 2 The following screen is shown C C M Local Control Menu Mod F1 F2 F3 Press the key Mod and use the scroll keys 1 to select the desired control mode Press the key Prog to program or the key Canc to cancel the modification 3 20 Service menu Control panel Function To reset the service plans which are carried out To ...

Page 42: ...ing hours Service plan A B and C 16000 running hours Service plan A B C and D 24000 running hours Procedure Starting from the Main screen see Main screen menu Press the key Menu F1 Press the arrow down key 1 until Service is followed by a horizontal arrow Activate the menu by pressing tabulator key 2 A screen similar to the one below appears Service Timer Running Hours hrs 7971 Menu F1 F2 F3 The s...

Page 43: ...g The Rset button only appears when the Next Timer level is almost reached After pressing the arrow down key in the Service Timer screen the Life Time hours are shown i e the number of hours elapsed since initial programming ex factory This timer is not taken into account 3 21 Saved data menu Control panel Function To call up some compressor data saved by the regulator These data are Last shut dow...

Page 44: ...00 Maximum speed reduction 75 100 100 Parameters Minimum setting Factory setting Maximum setting Minimum stop time sec 5 5 30 Power recovery time sec 10 10 3600 Restart delay sec 0 0 1200 Communication time out sec 10 30 60 Fan motor starts per day 1 2400 2400 Protections Minimum setting Factory setting Maximum setting Compressor element outlet temperature shut down warning level C 50 110 119 Comp...

Page 45: ... be decreased to 50 C 122 F Reset the value after testing Delay at signal Is the time period during which the warning signal must exist before the warning message appears Delay at start Is the time period after starting which must expire before generating a warning The setting should be less than the setting for the delay at signal Minimum stop time Once the compressor has automatically stopped it...

Page 46: ...ed version Reference Designation 1 Manual drain 2 Automatic drain 3 Electric cable entry 4 Motor and dryer only on Workplace Full Feature cooling air outlet 5 Cooling air outlet 6 Cooling air inlet 7 Compressor air inlet Instruction book 44 API161475 ...

Page 47: ...m the environment If such a compressor is to be installed in an application where conductive dust is present the appropriate measures should be taken in either the installation or adaptation of the machine Please contact Atlas Copco The rain protection option is not foreseen for frequency converter driven compressors If the compressor is installed where the ambient temperature can be below 0 C 32 ...

Page 48: ...ver and provide a wooden beam 1 section approx 4x6 cm 1 6x2 4 in through the supports at both sides of the receiver While holding the compressor slowly lift the forks until the receiver is secured between the beams Move the compressor smoothly Compressor room example of GA 5 VSD up to GA 11VSD Instruction book 46 API161475 ...

Page 49: ...is 5 m s 16 5 ft s The maximum allowable pressure drop over the cooling air ducts is 30 Pa 0 12 in wc If it is greater than this value a fan is needed at the outlet of the ducts Consult Atlas Copco For alternatives 1 and 3 the required ventilation capacity to limit the compressor room temperature can be calculated as follows Qv 1 16 N ΔT for units without optional dryer Qv Required ventilation cap...

Page 50: ... installed downstream of the PD filter It is recommended to provide by pass pipes and valves across the filters in order to isolate the filters during maintenance without disturbing the compressor 9 Safety valve 4 3 Electrical connections Working with machinery controlled by a frequency converter requires special safety precautions These safety precautions depend on the kind of network used TN TT ...

Page 51: ...ectrical connections 1 Customer s installation 2 Option 3 Dryer 4 Fan motor oil cooler clockwise rotation 5 Fan motor aftercooler counter clockwise rotation 6 Supply of dryer Instruction book API161475 49 ...

Page 52: ... via Clock function are active if programmed Remote control The compressor will react to commands from external switches Emergency stop remains active Compressor start stop commands via Clock function are still possible For remote starting and stopping Connect a start programmed stop button S1 between terminals 1 and 2 wires 30 and 33 of connector X108 See section Electrical system to locate the t...

Page 53: ...e compressor before cleaning the coolers 7 Lightly oil the gasket of the oil filter screw the filter on and tighten by hand approx half a turn 8 Warning voltage 9 Consult instruction book before greasing 10 Before connecting the compressor electrically consult the Instruction book for the motor rotation direction 11 Compressor remains pressurized for 30 seconds after switching off the voltage 12 T...

Page 54: ... apply all relevant Safety precautions Also consult section Problem solving Procedure For the position of the air outlet valve and the drain connections see sections Introduction and Condensate system Transport fixtures Motor direction arrow Instruction book 52 API161475 ...

Page 55: ...Position of oil level sight glass Instruction book API161475 53 ...

Page 56: ...amped tight to their terminals The installation must be earthed and protected against short circuits by fuses of the inert type in all phases An isolating switch must be installed near the compressor Check the voltage selecting wires at the primary side of transformers T1 Fit the air outlet valve AV see section Introduction for the position of the valve Close the valve Connect the air net to the v...

Page 57: ...y controlled Switch on the voltage Start the compressor and stop it immediately Check the rotation direction of the drive motor M1 while the motor is coasting to a stop The correct rotation direction of the drive motor is clockwise when facing the non drive end of the motor and is indicated by an arrow 3 Check also that the fan motors are blowing cooling air through the roof of the compressor If t...

Page 58: ...ation Procedure In order to ensure sufficient motor cooling the doors must be closed during operation and may be opened for short periods only to carry out checks Low load conditions When operating compressors controlled with frequency converters in low load applications operator should ensure that nominal oil temperature is reached When the motors are stopped and LED 8 is alight the motors may st...

Page 59: ...is lit the regulator is automatically controlling the compressor i e loading unloading stopping of the motors and restarting Regularly check that condensate is discharged during operation See section Condensate system and in case of an OSD also check the level in the oil collector see section Operating and maintenance instructions OSD The amount of condensate depends on the environmental and opera...

Page 60: ...ssages are continuously displayed for 3 seconds each Control panel Check the display 2 regularly for readings and messages Normally the display shows the compressor outlet pressure the motor speed and the abbreviations of the functions of the keys below the display Always check the display 2 and remedy the trouble if alarm LED 7 is alight or blinks See section Status data menu The display 2 will s...

Page 61: ...m solving 5 7 Taking out of operation Procedure Stop the compressor press the emergency stop button and close the air outlet valve Switch off the voltage and disconnect the compressor from the mains Open the manual drain valve s see section Condensate system for the position of the valve s Wait until the compressor has depressurised Unscrew the filler plug only one turn to permit any pressure in t...

Page 62: ...offers several types of service contracts relieving you of all preventive maintenance work Consult your Atlas Copco Customer Centre General When servicing replace all removed gaskets O rings and washers Intervals The local Atlas Copco Customer Centre may overrule the maintenance schedule especially the service intervals depending on the environmental and working conditions of the compressor The lo...

Page 63: ...n condensate compressed air receiver Check the pressure dew point temperature compressors with integrated dryer Monthly For units with built in dryer Inspect condenser of dryer and clean if necessary Press the test button on top of the electronic water drain EWD Open the manual drain valve s Dm Dm1 to clean the filter inside the EWD Instruction book API161475 61 ...

Page 64: ...ecessary clean using an air jet Replace damaged or heavily contaminated elements Check the filter element of the electric cabinet if applicable Replace if necessary Yearly I n s p e c t t h e a i r r e c e i v e r c o m p r e s s o r s o n a i r r e c e i v e r T h e a i r r e c Instruction book 62 API161475 ...

Page 65: ...r comes first The indicated oil exchange intervals are valid for standard operating conditions see section Reference conditions and limitations and nominal operating pressure see section Compressor data Exposure of the compressor to external pollutants operation at high humidity combined with low duty cycles or operation at higher temperatures may require a shorter oil exchange interval Contact At...

Page 66: ... oil injected screw compressors running in mild conditions Its specific formulation keeps the compressor in excellent condition Roto Inject Fluid NDURANCE can be used for compressors operating at ambient temperatures between 0 C 32 F and 40 C 104 F If the compressor is regularly operating in ambient temperatures above 35 C 95 F it is recommended to use Roto Synthetic Fluid ULTRA or Roto Synthetic ...

Page 67: ...hange interval Consult Atlas Copco Roto Synthetic Fluid XTEND DUTY Atlas Copco s Roto Synthetic Fluid XTEND DUTY is a high quality synthetic 8000 hours lubricant for oil injected screw compressors which keeps the compressor in excellent condition Because of its excellent oxidation stability Roto Synthetic Fluid XTEND DUTY can be used for compressors operating at ambient temperatures between 0 C 32...

Page 68: ...Duty Fluid Also consult section Oil specifications Ordering number 5 litre can 1 3 US gal 1 1 Imp gal 2901 1700 00 20 litre can 5 3 US gal 4 4 Imp gal 2901 1701 00 209 litre drum 55 2 US gal 46 Imp gal 2901 1702 00 6 5 Disposal of used material Used filters or any other used material e g desiccant lubricants cleaning rags machine parts etc must be disposed of in an environmentally friendly and saf...

Page 69: ...ngs must be regreased with KLÜBERQUIET BQH 72 102 Quantity 16 g 0 56 oz per bearing at the drive end side Quantity 10 g 0 35 oz per bearing at the non drive end side To regrease the motor run the regreasing program from the Test submenu on the regulator During the regreasing program the compressor will run for 15 minutes at low speed The compressed air is blown off via the solenoid valve After car...

Page 70: ...evant Service Plan reset the service warning see section Service menu 7 3 Oil and oil filter change Warning The operator must apply all relevant Safety precautions Always drain the compressor oil at all drain points Used oil left in the compressor can contaminate the oil system and can shorten the lifetime of the new oil Never mix lubricants of different brands or types as they may not be compatib...

Page 71: ...he manifold Oil the gasket of the new filter and screw it into place Tighten firmly by hand Remove filler plug FC Fill the oil tank OT with oil until the level reaches the middle of sight glass Gl Take care that no dirt drops into the system Refit and tighten filler plug FC Run the compressor at minimum speed for a few minutes Stop the compressor and wait a few minutes to allow the oil to settle D...

Page 72: ...the compressor close the air outlet valve and switch off the voltage Remove any dirt from the coolers with a fibre brush Never use a wire brush or metal objects Then clean with an air jet in the reverse direction to normal flow If it is necessary to wash the coolers Ca Co with a cleaning agent consult Atlas Copco Instruction book 70 API161475 ...

Page 73: ...valves stop and depressurise the compressor See section Problem solving Valve SV can be tested on a separate air line If the valve does not open at the set pressure stamped on the valve the valve must be replaced Valve SV1 is fitted on Tank mounted versions The valve can be tested on a separate air line If the valve does not open at the set pressure stamped on the valve the valve must be replaced ...

Page 74: ...ng edge on the valve body Fit the screw The operator must apply all relevant Safety precautions Before electrical intervention Wait for at least 6 minutes before starting any electrical repairs as dangerous high voltage remains on the capacitors of the start and speed regulation unit during some minutes after switching off the voltage Faults and remedies If the alarm LED is lit or flashes consult ...

Page 75: ...ion Fault Remedy Compressor element outlet temperature or delivery air temperature above normal Oil level too low Check and correct Insufficient cooling air or cooling air temperature too high Check for cooling air restriction or improve ventilation of the compressor room Avoid recirculating of cooling air If installed check capacity of compressor room fan Oil cooler clogged Clean cooler By pass v...

Page 76: ...nal voltage It is however highly recommended to keep the voltage drop over the supply cables at nominal current below 5 of the nominal voltage IEC 60204 1 If cables are grouped together with other power cables it may be necessary to use cables of a larger size than those calculated for the standard operating conditions Use the original cable entry See section Dimension drawings To preserve the pro...

Page 77: ...ax 3 copper conductors in raceway or cable with 85 90 C 185 194 F insulation at 46 C 115 F ambient temperature and operating at nominal voltage Cables not grouped with other cables Fuse size is the max fuse size in order to protect the motor against short circuit For CSA fuse HRC form II for UL fuse class RK5 If the local conditions are more severe then the described standard conditions the cables...

Page 78: ...e conditions see section Reference conditions and limitations GA11 VSD 10 bar Unit Frequency Hz 60 60 60 Number of compression stages 1 1 1 Normal effective working pressure bar e 4 7 9 5 Maximum effective working pressure Workplace bar e 7 5 7 5 10 Maximum motor shaft speed rpm 4110 4110 3674 Minimum motor shaft speed rpm 1074 1074 1074 Temperature of air leaving outlet valve approx Workplace C 3...

Page 79: ...he air receiver Drain the condensate every day in order to reduce the risk of corrosion This may be done manually by opening the drain valve or by means of the automatic drain if fitted to the tank Nevertheless a weekly check of correct functioning of the automatic valve is needed This has to be done by opening the manual drain valve and check for condensate Verify that no rust obstructions affect...

Page 80: ...for the design are shown and or referred to The Declaration of Conformity Declaration by the Manufacturer is part of the documentation that is supplied with this compressor Local legal requirements and or use outside the limits and or conditions as specified by the manufacturer may require other inspection periods as mentioned below Instruction book 78 API161475 ...

Page 81: ...t to 97 23 EC Pressure Equipment Directive greater than or equal to category II Compressor type Part number Description PED Class GA 5 VSD up to GA 11 VSD 0830 1008 73 Safety valve IV 0830 1008 88 Safety valve IV Overall rating The compressors conform to PED smaller than category I Instruction book API161475 79 ...

Page 82: ...gium 2 Applicable directives 3 Standards used On the Declaration of Conformity Declaration by the Manufacturer the harmonized and or other standards that have been used for the design are shown and or referred to The Declaration of Conformity Declaration by the Manufacturer is part of the documentation that is supplied with this device Instruction book 80 API161475 ...

Page 83: ......

Page 84: ...stomers 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 Atlas Copco Airpower NV All rights reserved Designs and specifications are subject to change without notice or obligation ...

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