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5 | Installation

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0870222540_NX0950A_WCV_-_IM_en

5.2.4 Barrier Gas System Connection (Optional)

PRV

FME

BGC

MAN

BGC

Barrier gas connection

FME

Flow meter

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*

15 ... 20

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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Содержание COBRA NX 0950 A

Страница 1: ...906 Chevenez Switzerland VACUUM APP Get technical data instruction manuals service kits 2020 03 17 0870222540 _en Original instructions Modifications reserved Dry Screw Vacuum Pumps NX 0950 A Water Co...

Страница 2: ...nnection 12 5 2 3 Cooling Water Connection 13 5 2 4 Barrier Gas System Connection Optional 14 5 3 Filling Oil 14 5 4 Electrical Connection 17 5 4 1 Electrical Connection of the Variable Frequency Driv...

Страница 3: ...Table of Contents 0870222540_NX0950A_WCV_ _IM_en 3 14 EU Declaration of Conformity 33...

Страница 4: ...designed and manufactured according to state of the art meth ods Nevertheless residual risks may remain This instruction manual highlights potential hazards where appropriate Safety notes and warning...

Страница 5: ...tor CD Condensate drain CWD Cooling water drain plug CWI Cooling water inlet CWO Cooling water outlet EB Eye bolt GB Gas ballast valve IN Suction connection IS Inlet screen MP Magnetic plug NP Namepla...

Страница 6: ...non aggressive non toxic and non explosive gases Conveying of other media leads to an increased thermal and or mechanical load on the machine and is permissible only after a consultation with Busch Th...

Страница 7: ...s going to the bearings chambers Depending on the application the sealing systems efficiency can be improved with a barrier gas system see Barrier Gas System 7 2 5 Optional Accessories 2 5 1 Gas Balla...

Страница 8: ...Connection size G3 2 5 5 Inlet Check Valve In order to avoid reverse rotation after switching off the machine can be equipped with an inlet check valve The inlet check valve also prevents fast ventin...

Страница 9: ...machine is already filled with oil Tilting a machine that is already filled with oil can cause large quantities of oil to in gress into the cylinder Drain the oil prior to every transport or always ho...

Страница 10: ...ue to a long storage time the capacitors of the variable frequency drive can lose effi ciency because of electrochemical processes In the worst case it can lead to a short circuit and therefore to a d...

Страница 11: ...way Make sure that the oil sight glass OSG 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...

Страница 12: ...G3 DN100 ISO K DIN 28404 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 Discharg...

Страница 13: ...ng water complies with the following requirements Supply capacity l min 8 16 Water pressure bar 1 6 Supply temperature C 10 30 Required pressure differential across supply and return bar 1 To reduce t...

Страница 14: ...e 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 F...

Страница 15: ...pacity see Technical Data 32 and Oil 32 1 2 B u s c h O i l MAX MIN 3 4 Oil filling at the motor side Check oil level 1 B u s c h O i l 2 MAX MIN 3 4 Oil filling at the inlet side Check oil level When...

Страница 16: ...0870222540_NX0950A_WCV_ _IM_en Last oil change __ __ ____ Oil type see nameplate Change interval see instruction manual If there is no sticker part no 0565 568 959 on the machine Order it from your B...

Страница 17: ...or Electrically connect the Variable Frequency Drive VFD see Electrical Connection of the Variable Frequency Drive DANGER Carry out any work on the variable frequency drive and motor Risk of electrica...

Страница 18: ...ency Drive The following applies to machines equipped with an on board variable frequency drive VFD Make sure that the power supply for the drive is compatible with the data on the nameplate of the va...

Страница 19: ...ies to machines equipped with an on board variable frequency drive VFD The Variable Frequency Drive VFD is delivered with preset factory parameters Please refer to the specific wiring diagram supplied...

Страница 20: ...ency drive Connect the motor cables as shown in the below wiring diagram Delta connection low voltage Star connection high voltage NOTICE Incorrect direction of rotation Risk of damage to the machine...

Страница 21: ...chine in short time Prior to commissioning the machine must be filled with oil see Filling Oil 14 NOTICE Lubricating a dry running machine compression chamber Risk of damage to the machine Do not lubr...

Страница 22: ...ermissible number of starts does not exceed 6 starts per hour Those starts should be spread within the hour Make sure that the operating conditions comply with the Technical Data 32 After a few minute...

Страница 23: ...tion work must only be executed by qualified personnel WARNING Machines contaminated with hazardous material Risk of poisoning Risk of infection If the machine is contaminated with hazardous material...

Страница 24: ...for oil leaks in case of leaks have the machine repaired contact Busch Yearly Carry out a visual inspection and clean the machine from dust and dirt Check the electrical connections and the monitorin...

Страница 25: ...Maintenance 7 0870222540_NX0950A_WCV_ _IM_en 25 36 7 3 Cleaning the Inlet Screen 8x 1 2 8x 3 hex key Compressed air 7 4 Cleaning the Gas Ballast Filter Optional 1 2 3 36 mm wrench Compressed air...

Страница 26: ...5 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 1 2 3 4 Cleaning cloth Oi...

Страница 27: ..._ _IM_en 27 36 1 2 3 4 Oil draining at the suction side Drain pan Magnetic plug Cleaning cloth For oil type and oil capacity see Technical Data 32 and Oil 32 1 2 B u s c h O i l MAX MIN 3 4 Oil fillin...

Страница 28: ...the inlet side Check oil level 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 I...

Страница 29: ...hat is described in this manual should be done through Busch WARNING Machines contaminated with hazardous material Risk of poisoning Risk of infection If the machine is contaminated with hazardous mat...

Страница 30: ...Busch representative for the detailed spare parts list 11 Troubleshooting DANGER Live wires Risk of electrical shock Electrical installation work must only be executed by qualified personnel CAUTION H...

Страница 31: ...un suitable oil type Use one of the recom mended oils in the correct quantity see Oil 32 Defective gears bearings or coupling element Repair machine contact Busch The machine runs too hot Insufficien...

Страница 32: ...EN ISO 2151 dB A 75 Ambient temperature range C 5 40 Max allowable counter pressure at the dis charge hPa mbar 200 Max allowable gas inlet temperature C 50 hPa mbar 200 50 hPa mbar 70 Relative humidi...

Страница 33: ...es in electrical and electronic equipment and the following standards Standard Title of the Standard EN ISO 12100 2010 Safety of machinery Basic concepts general principles of design EN ISO 13857 2008...

Страница 34: ...Note...

Страница 35: ...Note...

Страница 36: ...ael service_sales busch co il Italy info 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...

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