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Installation | 5

Instruction Manual COBRA NC 2500 B WCV_EN_en

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5.2.3 Cooling Water Connection

CWO

CWI

PHE

CWI

Cooling water inlet

CWO

Cooling water outlet

PHE

Plate heat exchanger

• Connect the cooling water connections (CWI / CWO) to the water supply.

Connection size:

– G1/2, ISO 228-1 (CWI / CWO)

• Make sure that the cooling water complies with the following requirements:

Supply capacity

l/min

Water pressure

bar

1 ... 6

Supply temperature

°C
°F

+10 ... +30

Required pressure differential across sup-
ply and return

bar

≥

• To reduce the maintenance effort and ensure a long product lifetime we recom-

mend the following cooling water quality:

Hardness

mg/l (ppm) < 90

Properties

Clean & clear

PH value

7 ... 8

Particle size

µm

< 200

Chloride

mg/l

< 100

Electrical conductivity

µS/cm

≤

100

Free chloride

mg/l

< 0.3

Materials in contact with the cooling water Stainless steel

NOTE

Water hardness unit conversion.

1 mg/l (ppm) = 0.056 °dh (german degree) = 0.07 °e (english degree) = 0.1 °fH (french
degree)

Содержание COBRA ATEX NC 2500 B

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 41: ...Note...

Страница 42: ...Note...

Страница 43: ...Note...

Страница 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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