BUSCH COBRA ATEX NC 2500 B Instruction Manual Download Page 14 | Manualshive

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Instruction Manual COBRA NC 2500 B WCV_EN_en

5.2.4 Barrier Gas System Connection

Without nitrogen panel

PRV

FR

BGC

MAN

FME

BGC

Barrier gas connection

FME

Flow meter

FR

Flow regulator

MAN

Manometer

PRV

Pressure regulating valve

• Connect the barrier gas connection (BGC) to the gas supply.

Connection size:

– G1/4, ISO 228-1

• Make sure that the gas complies with the following requirements:

Gas type

Dry nitrogen or air

Gas temperature

°C

0 ... 60

Maximum gas pressure

bar

13

Recommended pressure setting at the
pressure regulating valve (PRV)

bar

3

Filtration

µm

5

Recommended flow rate

SLM*

30

Air quality (only for air)

Acc. to ISO
8573-1

Class 5.4.4.

* standard litre per minute

5.3 Filling Oil

NOTICE

Use of an inappropriate oil.

Risk of premature failure!

Loss of efficiency!

• Only use an oil type which has previously been approved and recommended by

Busch.

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Summary of Contents for COBRA ATEX NC 2500 B

Page 1: ...technical data instruction manuals service kits Instruction Manual COBRA Dry Screw Vacuum Pumps NC 2500 B Water Cooled Version 0870558967 A0006_en Original instructions Modifications reserved 14 09 2...

Page 2: ...Connection 13 5 2 4 Barrier Gas System Connection 14 5 3 Filling Oil 14 5 4 Filling Cooling Liquid 16 5 5 Fitting the Coupling 17 5 6 Electrical Connection 18 5 6 1 Wiring Diagram Three Phase Motor P...

Page 3: ...ents Instruction Manual COBRA NC 2500 B WCV_EN_en 3 10 Spare Parts 35 11 Troubleshooting 35 12 Technical Data 38 13 Cooling Liquid 38 14 Oil 38 15 EU Declaration of Conformity 39 16 UK Declaration of...

Page 4: ...as been designed and manufactured according to state of the art meth ods Nevertheless residual risks may remain This instruction manual highlights po tential hazards where appropriate Safety notes and...

Page 5: ...ing liquid vent plug cooling liquid pump CLV2 Cooling liquid vent plug machine CWI Cooling water inlet CWO Cooling water outlet EB Eye bolt ECP Earth connection IN Suction connection with mesh screen...

Page 6: ...he cylinder There is no need for a lubrication or an operating fluid in the compression chamber 2 2 Application The machine is intended for the suction of air and other dry non aggressive non toxic an...

Page 7: ...by the compression of the process gases By inlet pressure 300 mbar cooling air is automatically drawn in through an air filter 2 4 3 Resistance Thermometer Cooling Liquid The resistance thermometer mo...

Page 8: ...is unit is composed of a vibration sensor SA and a diagnostic electronics VSE100 delivered loose The machine must be stopped when the vibration limit value preset at the factory is reached see Wiring...

Page 9: ...shown NOTICE In case the machine is already filled with oil Tilting a machine that is already filled with oil can cause large quantities of oil to ingress into the cylinder Drain the oil prior to ever...

Page 10: ...machine in a corrosion inhibiting film Store the machine indoors dry dust free and if possible in original packaging preferably at temperatures between 5 55 C NOTICE Long storage time Risk of damage...

Page 11: ...SG remains easily visible Make sure that enough space remains for maintenance work Make sure that the machine is placed or mounted horizontally a maximum of 1 in any direction is acceptable Check the...

Page 12: ...6 If the machine is used as part of a vacuum system Busch recommends the installation of an isolation valve in order to prevent the machine from turning backwards 5 2 2 Discharge Connection Connectio...

Page 13: ...acity l min 18 Water pressure bar 1 6 Supply temperature C F 10 30 Required pressure differential across sup ply and return bar 1 To reduce the maintenance effort and ensure a long product lifetime we...

Page 14: ...SO 228 1 Make sure that the gas complies with the following requirements Gas type Dry nitrogen or air Gas temperature C 0 60 Maximum gas pressure bar 13 Recommended pressure setting at the pressure re...

Page 15: ...B WCV_EN_en 15 44 For oil type and oil capacity see Technical Data 38 and Oil 38 1 2 B u s c h O il 3 MAX MIN 3 mm 4 Check oil level Oil filling at the motor side 1 2 B u s c h O il 3 MAX MIN 3 mm 4...

Page 16: ...nterval see instruction manual If there is no sticker part no 0565 568 959 on the machine Order it from your Busch representative 5 4 Filling Cooling Liquid For cooling liquid type and cooling liquid...

Page 17: ...ssible torque 10 Nm Ring Machine type Coupling size Value E mm NC 2500 B Samiflex A45 3 5 0 1 In case of a machine delivery without motor Fit the second coupling hub on the motor shaft separately deli...

Page 18: ...will not be affected by electric or electro magnetic disturbance from the mains if necessary seek advice from Busch Connect the protective earth conductor Electrically connect the motor Make sure tha...

Page 19: ...n in the wrong direction of rotation can destroy the machine in a short time Prior to start up ensure that the machine is operated in the right direction The intended rotation direction of the motor i...

Page 20: ...nect the cooling liquid pump Make sure that the cooling liquid pump is connected such that is running when the machine is started 5 7 1 Wiring Diagram Cooling Liquid Pump 230 400 VAC cooling liquid pu...

Page 21: ...transmitter 2 1 1 2 3 4 5 6 1 Brown 2 Blue Wiring without transmitter 1 2 3 4 1 and 2 Red 3 and 4 White 5 8 2 Wiring Diagram Vibration Diagnostic Unit Part no Vibration sensor CTC 0658 569 597 Diagnos...

Page 22: ...an be shipped without cooling liquid Operation without cooling liquid will ruin the machine in short time Prior to commissioning the machine must be filled with cooling liquid see Filling Cooling Liqu...

Page 23: ...nce and troubleshooting work 6 1 Recommendations on Operation 6 1 1 Operating frequency Operate the machine continuously at 35 60 Hz 2100 3600 min 1 For continuous operation at 20 35 Hz for example fo...

Page 24: ...WARNING Machines contaminated with hazardous material Risk of poisoning Risk of infection If the machine is contaminated with hazardous material Wear appropriate personal protective equipment CAUTION...

Page 25: ...significantly Interval Maintenance work Monthly Check the oil level and oil condition see Oil Level Inspection 26 If the oil is contaminated or dis coloured change the oil Check the cooling liquid le...

Page 26: ...N 3 mm MAX MIN 3 mm MAX MIN 3 mm MAX MIN 3 mm MAX MIN 3 mm MAX MIN 3 mm Oil sight glass on motor side Oil sight glass on suction side Make sure that the oil level is between the middle of the oil sigh...

Page 27: ...00 B WCV_EN_en 27 44 7 4 Oil Change NOTICE Use of an inappropriate oil Risk of premature failure Loss of efficiency Only use an oil type which has previously been approved and recommended by Busch 2 3...

Page 28: ...7 Maintenance 28 44 Instruction Manual COBRA NC 2500 B WCV_EN_en 1 3 2 4 Magnetic plug Cleaning cloth Drain pan 1 2 3 4 5 6 7 1 Oil draining at the suction side Cleaning cloth Drain pan Magnetic plug...

Page 29: ...B WCV_EN_en 29 44 For oil type and oil capacity see Technical Data 38 and Oil 38 1 2 B u s c h O il 3 MAX MIN 3 mm 4 Check oil level Oil filling at the motor side 1 2 B u s c h O il 3 MAX MIN 3 mm 4 C...

Page 30: ...te Change interval see instruction manual If there is no sticker part no 0565 568 959 on the machine Order it from your Busch representative 7 5 Cooling Liquid Change NOTICE Cooling liquid draining Ri...

Page 31: ...Maintenance 7 Instruction Manual COBRA NC 2500 B WCV_EN_en 31 44 1 2 3 2 3 1 Additional cooling liquid draining points Bottom view of the machine...

Page 32: ...7 Maintenance 32 44 Instruction Manual COBRA NC 2500 B WCV_EN_en 1 2 Additional cooling liquid draining point 1 Drain pan 1 2 Additional cooling liquid draining point 2 Drain pan...

Page 33: ...ining point 3 Drain pan Bottom view of the machine For cooling liquid type and cooling liquid capacity see Technical Data 38 and Cooling Liquid 38 1 2 C o o l i n g l i q u i d Z i t r e c M 2 5 3 4 5...

Page 34: ...emature failure Loss of efficiency It is highly recommended that any dismantling of the machine that goes beyond an ything that is described in this manual should be done through Busch In case of the...

Page 35: ...applicable regulations Dispose of the machine as scrap metal 10 Spare Parts NOTICE Use of non Busch genuine spare parts Risk of premature failure Loss of efficiency The exclusive use of Busch genuine...

Page 36: ...in case of Conveying Condensable Vapours 24 The motor is defective Replace the motor The machine does not reach the usual pressure on the suction connection Suction or discharge lines too long or sect...

Page 37: ...al Data 38 Temperature of the process gases at the inlet too high Observe the permitted gas inlet temperature see Technical Data 38 The cooling water pump is defective Repair the machine Oil level too...

Page 38: ...a mbar 200 50 hPa mbar 70 Relative humidity at 30 C 90 Ambient pressure Atmospheric pressure Cooling water requirements See Cooling Water Connection 13 Oil capacity motor side l 3 5 Oil capacity sucti...

Page 39: ...owing designated standards that have been used to fulfil those provisions Standard Title of the Standard EN ISO 12100 2010 Safety of machinery Basic concepts general principles of design EN ISO 13857...

Page 40: ...ds that have been used to fulfil those provisions Standard Title of the Standard BS EN ISO 12100 2010 Safety of machinery Basic concepts general principles of design Risk as sessment and risk reductio...

Page 41: ...Note...

Page 42: ...Note...

Page 43: ...Note...

Page 44: ...busch it Japan info busch co jp Korea busch busch co kr Malaysia busch busch com my Mexico info busch com mx Netherlands info busch nl New Zealand sales busch co nz Norway post busch no Peru info bus...

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