BUSCH COBRA NX 0450 A Instruction Manual Download Page 15 | Manualshive

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Installation | 5

Instruction Manual COBRA NX 0450-0650 A WCV_EN_en

15 | 40

Recommended pressure setting at the pres-
sure regulating valve (PRV)

bar(a)

3

Filtration

µm

5

Recommended flow rate

SLM (standard li-
ter per minute)

NX 0450 A: 10 ... 15 - NX 0650 A:
15 ... 20

Air quality (only for air)

Acc. to ISO
8573-1

Class 5.4.4.

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.

For oil type and oil capacity see Technical Data and

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Summary of Contents for COBRA NX 0450 A

Page 1: ...Get technical data instruction manuals service kits COBRA Dry Screw Vacuum Pumps NX 0450 A NX 0650 A Water Cooled Version WCV Instruction Manual 0870565358 B0008_en US Original instructions 11 3 2022...

Page 2: ...nnection 13 5 2 4 Barrier Gas System Connection Optional 14 5 3 Filling Oil 15 6 Electrical Connection 17 6 1 Machine delivered without Variable Speed Drive 17 6 2 Machine delivered with a Variable Sp...

Page 3: ...Table of Contents Instruction Manual COBRA NX 0450 0650 A WCV_EN_en 3 40 16 UK Declaration of Conformity 38...

Page 4: ...to state of the art methods Never theless residual risks may remain as described in the following chapters and in accordance with the chapter Intended Use 6 This instruction manual highlights potenti...

Page 5: ...gas flow meter BGM Barrier gas manometer BGR Barrier gas pressure regulator CD Condensate drain CWD Cooling water drain plug CWI Cooling water inlet CWO Cooling water outlet EB Eye bolt GB Gas ballast...

Page 6: ...id in the compression chamber 2 2 Intended Use WARNING In case of foreseeable misuse outside the intended use of the machine Risk of injuries Risk of damages to the machine Risk of damages to the envi...

Page 7: ...water temperature of the machine The temperature switch has two switch points Switch point 1 T1 Early warning Switch point 2 T2 Trip the machine must be stopped 2 4 3 Sealing Systems The machine is eq...

Page 8: ...filled with oil can cause large quantities of oil to ingress into the cylinder Drain the oil prior to every transport or always horizontally transport the machine To find out the weight of the machine...

Page 9: ...all apertures with adhesive tape or reuse provided caps If the machine is to be stored for more than 3 months Wrap the machine in a corrosion inhibiting film Store the machine indoors dry dust free a...

Page 10: ...ion space or location is vented such that sufficient cooling of the ma chine is provided Make sure that cooling air inlets and outlets of the motor fan are not covered or obstructed and that the cooli...

Page 11: ...e larger line sizes in order to avoid a loss of effi ciency Seek advice from your Busch representative 5 2 1 Suction Connection WARNING Unprotected suction connection Risk of severe injury Do not put...

Page 12: ...ed air source Connection size s At the machine discharge connection G2 for NX 0450 A horizontal orientable 180 G3 for NX 0650 A horizontal orientable 180 DN63 ISO K DIN 28404 for NX 0450 A vertical wi...

Page 13: ...wing requirements Supply capacity l min 4 10 for NX 0450 A 6 14 for NX 0650 A Water pressure bar 1 6 Supply temperature C 10 30 Required pressure differential across supply and return bar 1 To reduce...

Page 14: ...able Diameter of the orifice Differential water pressure NX 0450 A NX 0650 A No calibration n a 1 2 bar 4 mm at the cooling water outlet 1 2 bar 2 3 bar 4 mm at the cooling water inlet and outlet 2 6...

Page 15: ...ded flow rate SLM standard li ter per minute NX 0450 A 10 15 NX 0650 A 15 20 Air quality only for air Acc to ISO 8573 1 Class 5 4 4 5 3 Filling Oil NOTICE Use of an inappropriate oil Risk of premature...

Page 16: ...n When the oil filling is achieved Write down the oil change date on the sticker Last oil change __ __ ____ Oil type see nameplate Change interval see instruction manual If there is no sticker part no...

Page 17: ...e from Busch Make sure that the EMC of the machine is compliant with the requirements of your supply net work system if necessary provide further interference suppression EMC of the machine see EU Dec...

Page 18: ...tion according to EN 60204 1 for the motor Connect the protective earth conductor Electrically connect the motor NOTICE The motor frequency is below 20 Hz Risk of damage to the machine The motor nomin...

Page 19: ...rive is compatible with the data on the nameplate of the variable speed drive If the machine is equipped with a power connector install a residual current protective device to protect persons in case...

Page 20: ...4 4 Star connection multi voltage motor with 12 pins high voltage 4 4 4 Delta connection multi voltage motor with 12 pins middle voltage 4 4 4 NOTICE Incorrect direction of rotation Risk of damage to...

Page 21: ...witch any two of the motor phase wires 6 4 Electrical Connection of the Monitoring Devices NOTE In order to prevent potential nuisance alarms Busch recommends that the control system is configured wit...

Page 22: ...Risk of damage to the machine Do not lubricate the compression chamber of the machine with oil or grease Make sure that the installation conditions see Installation Conditions 10 are met Turn on the w...

Page 23: ...em dry compressed air is connected Check the volume flow on the barrier gas flow meter BGF see Barrier Gas System Connection Optional 14 Make sure that the air gas ballast GB is mounted and open If th...

Page 24: ...min utes after disconnection of the electrical supply Always ensure by using a suitable multimeter that no voltage is present on any drive power termi nals prior to commencing any work DANGER Live wi...

Page 25: ...ual operating conditions The intervals given below are considered as starting values which should be shortened or extended as appropri ate Particularly harsh applications or heavy duty operation such...

Page 26: ...27 Clean the magnetic plugs MP Every 25000 hours or after 4 years Have a major overhaul on the machine contact Busch 8 2 Oil Level Inspection Shut down the machine When the machine is stopped wait 1 m...

Page 27: ...llast Filter Optional 1 2 Description 1 Use a 36 mm wrench 2 Use compressed air and wear protec tive eyewear and mask 8 5 Oil Change NOTICE Use of an inappropriate oil Risk of premature failure Loss o...

Page 28: ...8 Maintenance 28 40 Instruction Manual COBRA NX 0450 0650 A WCV_EN_en 1 Description 1 Magnetic plug 1 Description 1 Magnetic plug For oil type and oil capacity see Technical Data and Oil 36...

Page 29: ...0 When the oil filling is achieved Write down the oil change date on the sticker Last oil change __ __ ____ Oil type see nameplate Change interval see instruction manual If there is no sticker part no...

Page 30: ...Any dismantling of the machine that goes beyond anything that is described in this manual should be done by Busch authorized technicians In case of the machine having conveyed gas that was contaminate...

Page 31: ...art up Disconnect the power supply Turn off the water supply If the machine is equipped with a barrier gas system Close the barrier gas supply Vent the connected lines to atmospheric pressure Drain th...

Page 32: ...Risk of premature failure Loss of efficiency The exclusive use of Busch genuine spare parts and consumables is recommended for the correct functioning of the machine and to validate the warranty There...

Page 33: ...suction connection The temperature switch TS reached the switch point Let the machine cool down See problem The machine runs too hot The motor is defective Replace the motor The machine does not reac...

Page 34: ...the permitted am bient temperature see Technical Data Temperature of the process gases at the inlet too high Observe the permitted gas inlet temperature see Tech nical Data Oil level too low Top up o...

Page 35: ...2 5 15 Nominal motor speed 50Hz 60Hz min 1 3000 3600 Noise level ISO 2151 50Hz 60Hz dB A 65 70 71 75 Ambient temperature range C 5 50 Max allowable counter pressure at the discharge hPa mbar rel 200 M...

Page 36: ...14 Oil 36 40 Instruction Manual COBRA NX 0450 0650 A WCV_EN_en 14 Oil VSC 100 ISO VG 100 Part number 1 L packaging 0831 168 356 Part number 5 L packaging 0831 168 357...

Page 37: ...n hazardous substances in electrical and electronic equipment incl all related applicable amend ments and comply ies with the following designated standards that have been used to fulfill those provis...

Page 38: ...016 Restriction of the use of certain hazardous substances in Electrical and Electronic Equipment Regulations 2021 and comply ies with the following designated standards that have been used to fulfill...

Page 39: ...Instruction Manual COBRA NX 0450 0650 A WCV_EN_en 39 40 Notes...

Page 40: ...sence In every country highly competent local personnel delivers custom tailored support backed by a global network of expertise Wherever you are Whatever your business We are there for you Busch comp...

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