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Maintenance | 8

Instruction Manual COBRA NF 0750 A - NF 0950 A WCV_EN_en

29 | 44

8.3

Cleaning the Inlet Screen

8.3.1

Cleaning the Inlet Screen with Vertical Flange G3 or DN100

1

2

Description

1

Use a hexagonal key

2

Use compressed air and wear protec-
tive eyewear and mask

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Содержание COBRA NF 0750 A

Страница 1: ...Get technical data instruction manuals service kits COBRA Dry Screw Vacuum Pumps NF 0750 A NF 0950 A Water Cooled Version WCV Instruction Manual 0870232965 0003_en US Original instructions 11 24 2022...

Страница 2: ...tem Connection Optional 15 5 3 Filling Oil 16 6 Electrical Connection 18 6 1 Machine delivered without Variable Speed Drive 18 6 2 Wiring Diagram Three Phase Motor Pump Drive 19 6 3 Electrical Connect...

Страница 3: ...Table of Contents Instruction Manual COBRA NF 0750 A NF 0950 A WCV_EN_en 3 44 14 Oil 41 15 EU Declaration of Conformity 42 16 UK Declaration of Conformity 43...

Страница 4: ...isks may remain as described in the following chapters and in accordance with the chapter Intended Use 6 This instruction manual highlights potential hazards where appropri ate Safety notes and warnin...

Страница 5: ...n Outlet CWD Cooling water drain plug CWI Cooling water inlet CWO Cooling water outlet EB Eye bolt GB Gas ballast valve GBS Gas ballast silencer IS Inlet screen MP Magnetic plug MTB Motor terminal box...

Страница 6: ...luid 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 en...

Страница 7: ...ow the additional maintenance instructions see Maintenance 26 and Oil Change 32 Use only Busch genuine spare parts see Spare Parts 37 Nameplate of the oxygen version of the machine NOTICE Chemical com...

Страница 8: ...e sealing systems efficiency can be improved with a barrier gas sys tem see Barrier Gas System 8 WARNING The barrier gas system is mandatory for the suction of process gas with a volume of oxygen high...

Страница 9: ...RA NF 0750 A NF 0950 A WCV_EN_en 9 44 2 5 4 Inlet Filter The inlet filter protects the machine against dust and other solids in the process gas The inlet filter is available with a paper or polyester...

Страница 10: ...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 every transport or a...

Страница 11: ...k of damage to the machine Seal 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...

Страница 12: ...llation area must be aired in such a way to prevent unacceptable levels of oxygen NOTICE Use of the machine outside of the permitted installation conditions Risk of premature failure Loss of efficienc...

Страница 13: ...the suction connection NOTICE Ingress of foreign objects or liquids Risk of damage to the machine If the inlet gas contains dust or other foreign solid particles Install a suitable filter 5 micron or...

Страница 14: ...lies with the following requirements Supply capacity l min 8 16 Water pressure bar 1 6 Supply temperature C 5 30 Required pressure differential across supply and return bar 1 To reduce the maintenance...

Страница 15: ...of oxygen higher than 21 21 PRV FME BGC MAN Description BGC Barrier gas connection FME Flow meter MAN Manometer PRV Pressure regulating valve Connect the barrier gas connection BGC to the gas supply C...

Страница 16: ...of an inappropriate oil Risk of fire Use only a type of oil approved and recommended by Busch for oxygen applications NOTICE Use of an inappropriate oil Risk of premature failure Loss of efficiency On...

Страница 17: ...7 44 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...

Страница 18: ...tem if necessary provide further interference suppression EMC of the machine see EU Declaration of Conformity 42 or UK Declaration of Conformity 43 6 1 Machine delivered without Variable Speed Drive D...

Страница 19: ...f the machine NP Make sure to comply with it Consult the Technical Data to get more information NOTICE Incorrect connection Risk of damage to the motor The wiring diagrams given below are typical Chec...

Страница 20: ...ong 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 is defined b...

Страница 21: ...NOTE In order to prevent potential nuisance alarms Busch recommends that the control system is configured with a time delay of at least 20 seconds 6 3 1 Wiring Diagram Temperature Switch Part no 0651...

Страница 22: ...t M 034 Sauerstoff CAUTION During operation the surface of the machine may reach temperatures of more than 70 C Risk of burns Avoid contact with the machine during and directly after operation CAUTION...

Страница 23: ...Turn on the water supply If the machine is equipped with a barrier gas system Turn on the barrier gas supply Adjust the barrier gas pressure Switch on the machine see Start Procedure 24 and Shutdown P...

Страница 24: ...active Active or inactive Open barrier gas supply visual confirmation Temperature switch closed Machine in operation Stop the machine YES NO Ramp up time 150 seconds Min speed 20Hz Max speed 60Hz NF 0...

Страница 25: ...ocedure SHUTDOWN Procedure Isolate Process from pump run pump during 15 min Machine off Stop the machine Isolation Isolation Isolation Close barrier gas supply Close cooling water supply Ramp down tim...

Страница 26: ...plicable safety regulations and trained in the handling of oxygen Accident prevention regulations or methods must imperatively be complied with Seek further information European Industrial Gases Assoc...

Страница 27: ...of premature failure and loss of efficiency Maintenance work must only be executed by qualified personnel Respect the maintenance intervals or ask your Busch representative for service NOTICE Using i...

Страница 28: ...repaired contact Busch Yearly Carry out a visual inspection and clean the machine from dust and dirt Check the electrical connections and the monitoring devic es Clean the inlet screen see Cleaning th...

Страница 29: ...COBRA NF 0750 A NF 0950 A WCV_EN_en 29 44 8 3 Cleaning the Inlet Screen 8 3 1 Cleaning the Inlet Screen with Vertical Flange G3 or DN100 1 2 Description 1 Use a hexagonal key 2 Use compressed air and...

Страница 30: ...aintenance 30 44 Instruction Manual COBRA NF 0750 A NF 0950 A WCV_EN_en 8 3 2 Cleaning the Inlet Screen with Horizontal Flange G3 1 Description 1 Use compressed air and wear protec tive eyewear and ma...

Страница 31: ...struction Manual COBRA NF 0750 A NF 0950 A WCV_EN_en 31 44 8 3 3 Cleaning the Inlet Screen with Double Flange G2 1 2 Description 1 Use compressed air and wear protec tive eyewear and mask 2 Max admiss...

Страница 32: ...and wear protec tive eyewear and mask 8 5 Oil Change WARNING Process gas with 21 vol oxygen and use of an inappropriate oil Risk of fire Use only a type of oil approved and recommended by Busch for ox...

Страница 33: ...Maintenance 8 Instruction Manual COBRA NF 0750 A NF 0950 A WCV_EN_en 33 44 1 Description 1 Magnetic plug 1 Description 1 Magnetic plug For oil type and oil capacity see Technical Data and Oil 41...

Страница 34: ..._en 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...

Страница 35: ...cy 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 contamin...

Страница 36: ...start 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...

Страница 37: ...ning of the machine and to validate the warranty There are no standard spare parts kits available for this product If you require Busch genuine parts Contact your Busch representative Spare parts avai...

Страница 38: ...he 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 re...

Страница 39: ...ve 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...

Страница 40: ...ed min 1 3600 60Hz 4320 72Hz RPM Noise level ISO 2151 dB A 66 69 Ambient temperature range C 5 40 F 41 104 Max allowable counter pressure at the discharge hPa mbar rel 200 TORR 150 Max allowable gas i...

Страница 41: ...Oxygen service Oxygen 21 vol YLC 250 B Part number 0 5 L packaging 1 kg 0831 131 400 Part number 1 0 L packaging 2 kg 0831 108 878 Part number 5 0 L packaging 10 kg 0831 108 879 Oil for standard servi...

Страница 42: ...bstances 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 provisions Standards...

Страница 43: ...n 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 those provisi...

Страница 44: ...esence 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 com...

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