BUSCH COBRA NX 0450 A Instruction Manual
  1. Manuals
  2. Brands
  3. BUSCH Manuals
  4. Water Pump
  5. COBRA NX 0450 A
  6. Instruction manual

BUSCH COBRA NX 0450 A Instruction Manual

Dry screw vacuum pumps
Hide thumbs Also See for COBRA NX 0450 A:
Table of Contents

Advertisement

Quick Links

Instruction Manual
COBRA
Dry Screw Vacuum Pumps
NX 0450 A, NX 0650 A
(air-cooled version)
0870211160/-0001_en / Original instructions / Modifications reserved
17/11/2021

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the COBRA NX 0450 A and is the answer not in the manual?

Questions and answers

Subscribe to Our Youtube Channel

Related Manuals for BUSCH COBRA NX 0450 A

Summary of Contents for BUSCH COBRA NX 0450 A

  • Page 1 Instruction Manual COBRA Dry Screw Vacuum Pumps NX 0450 A, NX 0650 A (air-cooled version) 0870211160/-0001_en / Original instructions / Modifications reserved 17/11/2021...

  • Page 2: Table Of Contents

    Table of Contents Table of Contents 1 Safety ............................4 2 Product Description ........................5 2.1 Operating Principle ......................6 2.2 Application........................6 2.3 Start Controls ........................7 2.4 Standard Features ......................7 2.4.1 Air Cooling ......................7 2.4.2 Temperature Switch ....................7 2.4.3 Sealing Systems .....................
  • Page 3 Table of Contents 12 Technical Data ..........................34 13 Cooling Liquid ..........................34 14 Oil ............................34 15 EU Declaration of Conformity....................35 16 UK Declaration of Conformity ....................36 Instruction Manual COBRA NX 0450-0650 A ACV_EN_en...

  • Page 4: Safety

    Safety Prior to handling the machine, this instruction manual should be read and understood. If anything needs to be clarified, please contact your Busch representative. Read this manual carefully before use and keep for future reference. This instruction manual remains valid as long as the customer does not change anything on the product.

  • Page 5: Product Description

    Product Description | 2 Product Description IN, IS CLV2 CLV1 Air-water heat exchanger Axial fan Barrier gas connection Barrier gas flow meter Barrier gas manometer Barrier gas pressure regulator Condensate drain Cooling liquid drain plug Cooling liquid fill plug CLV1 Cooling liquid vent valve (heat exchanger) CLV2 Cooling liquid vent plug (machine)

  • Page 6: Operating Principle

    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. The machine is intended for the placement in a non-potentially explosive environment. The machine is capable of maintaining ultimate pressure, see Technical Data [► 34].

  • Page 7: Start Controls

    - Cast iron - Steel - Aluminium - Fluoroelastomer (FKM/FPM) • In doubt, please contact your Busch representative. 2.3 Start Controls The machine comes without start controls. The control of the machine is to be provided in the course of installation.

  • Page 8: Sealing Systems

    3 | Transport 2.4.3 Sealing Systems The machine is equipped with labyrinth seals on the motor side and suction side. Sealing systems prevent the process gas 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 [► 8].

  • Page 9: Storage

    Storage | 4 Machine weight: see the technical data or the nameplate (NP) • Make sure that each of the slings used to lift the machine has a minimum length of 400 mm. • Make sure that the length of each sling is exactly the same. •...

  • Page 10: Connecting Lines / Pipes

    • Check the cooling liquid level, see Cooling Liquid Level Inspection [► 24]. If the machine is installed at an altitude greater than 1000 meters above sea level: • Contact your Busch representative, the motor should be derated or the ambient temperature limited.

  • Page 11: Suction Connection

    – G3 – ISO DN100, 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 Discharge Connection Discharge variants (without silencer)

  • Page 12: Barrier Gas System Connection (Optional)

    5 | Installation • Make sure that the discharged gas will flow without obstruction. Do not shut off or throttle the discharge line or use it as a pressurised air source. • Make sure that the counter pressure (also termed back pressure) at the discharge con- nection (OUT) does not exceed the maximum allowable discharge pressure, see Tech- nical Data [► 34].

  • Page 13: Filling 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 [► 34] and Oil [► 34]. Oil filling at the motor side...
  • Page 14 __ / __ / ____ 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 Busch representative. 14 / 40 Instruction Manual COBRA NX 0450-0650 A ACV_EN_en...

  • Page 15: Cooling System Cover Removal

    Installation | 5 5.4 Cooling System Cover Removal NOTE Before filling or changing the cooling liquid and electrically connecting the cooling sys- tem. • Remove the cooling system cover. Instruction Manual COBRA NX 0450-0650 A ACV_EN_en 15 / 40...

  • Page 16: Filling Cooling Liquid

    (CLV2) when the cooling liquid is spilling out* *This illustration shows the COBRA NX 0650 A ACV. For the COBRA NX 0450 A ACV, invert the order of cooling liquid vent valve closings: first close CLV1 then CLV2. 16 / 40...

  • Page 17: Electrical Connection

    • Provide an overload protection according to EN 60204-1 for the motor. • Make sure that the motor of the machine will not be affected by electric or electro- magnetic disturbance from the mains; if necessary seek advice from Busch. • Connect the protective earth conductor.

  • Page 18: Wiring Diagram Three-Phase Motor (Pump Drive)

    5 | Installation 5.6.1 Wiring Diagram Three-Phase Motor (Pump Drive) Delta connection (low voltage): Star connection (high voltage): Double star connection, multi-voltage Star connection, multi-voltage motor motor with 12 pins (low voltage): with 12 pins (high voltage): Delta connection, multi-voltage motor with 12 pins (middle voltage): NOTICE Incorrect direction of rotation.

  • Page 19: Electrical Connection Of The Monitoring Devices

    Installation | 5 5.7 Electrical Connection of the Monitoring Devices 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. 5.7.1 Wiring Diagram Temperature Switch Part no.: 0651 563 762...

  • Page 20: Wiring Diagram Cooling System

    6 | Commissioning 5.8.1 Wiring Diagram Cooling System NOTE The wiring diagram of the cooling system might be specific to the order. • Please refer to the specific wiring diagram supplied inside the terminal box (TB). Wiring diagram Commissioning NOTICE The machine can be shipped without oil.

  • Page 21: Conveying Condensable Vapors

    Commissioning | 6 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 Noise of running machine. Risk of damage to hearing! If persons are present in the vicinity of a non noise insulated machine over extended pe- riods: •...

  • Page 22: Maintenance

    Risk of injuries! Risk of premature failure and loss of efficiency! • Respect the maintenance intervals or ask your Busch representative for service. • Shut down the machine and lock against inadvertent start up. If the machine is equipped with a barrier gas system: •...

  • Page 23: Maintenance Schedule

    • Check the cooling liquid level, see Cooling Liquid Level Inspection [► 24]. • Check the machine 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.

  • Page 24: Cooling Liquid Level Inspection

    7 | Maintenance 7.3 Cooling Liquid Level Inspection • Shut down the machine. • Let the machine cool down. • Open the cooling liquid vent valves (CLV1 – CLV2). • Fill up if necessary, see Filling Cooling Liquid [► 16]. • Close the cooling liquid vent valves (CLV1 – CLV2) in the following order when the cooling liquid is spilling out.

  • Page 25: Cleaning The Inlet Screen

    Maintenance | 7 7.4 Cleaning the Inlet Screen hex key Compressed air 7.5 Cleaning the Gas Ballast Filter (Optional) 36 mm wrench Compressed air Instruction Manual COBRA NX 0450-0650 A ACV_EN_en 25 / 40...

  • Page 26: 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. Oil draining at the motor side Cleaning cloth Magnetic plug Drain pan...
  • Page 27 Maintenance | 7 Oil draining at the suction side Cleaning cloth Magnetic plug Drain pan For oil type and oil capacity see Technical Data [► 34] and Oil [► 34]. Oil filling at the motor side Check oil level Instruction Manual COBRA NX 0450-0650 A ACV_EN_en 27 / 40...
  • Page 28 __ / __ / ____ 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 Busch representative. 28 / 40 Instruction Manual COBRA NX 0450-0650 A ACV_EN_en...

  • Page 29: Cooling Liquid Change

    Maintenance | 7 7.7 Cooling Liquid Change Instruction Manual COBRA NX 0450-0650 A ACV_EN_en 29 / 40...
  • Page 30 (CLV2) when the cooling liquid is spilling out* *This illustration shows the COBRA NX 0650 A ACV. For the COBRA NX 0450 A ACV, invert the order of cooling liquid vent valve closings: first close CLV1 then CLV2. 30 / 40...

  • Page 31: Overhaul

    • Decontaminate the machine as much as possible and state the contamination sta- tus in a ‘Declaration of Contamination’. Busch will only accept machines that come with a completely filled in and legally binding signed ‘Declaration of Contamination’ (form downloadable from www.buschvacuum.com).

  • Page 32: Spare Parts

    • 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 is no standard spare parts kits available for this product, if you require Busch gen- uine parts: •...
  • Page 33 • Seek advice from your lo- cal Busch representative. The inlet screen (IS) is par- • Clean the inlet screen (IS), tially clogged. see Cleaning the Inlet Screen [► 25].

  • Page 34: Technical Data

    12 | Technical Data 12 Technical Data NX 0450 A NX 0650 A Pumping speed m³/h 350 / 420 650 / 650 (50Hz / 60Hz) Ultimate pressure (without gas ballast) hPa (mbar) abs. ≤0.1 Ultimate pressure (with gas ballast) hPa (mbar) abs. ≤0.5 / ≤0.1 ≤0.5 / ≤0.5 (50Hz / 60Hz)

  • Page 35: Eu Declaration Of Conformity

    Ateliers Busch S.A. Zone Industrielle CH-2906 Chevenez declares that the machine(s): COBRA NC 0450 A, COBRA NX 0450 A, COBRA NC 0650 A, COBRA NX 0650 A fulfill(s) all the relevant provisions from European directives: – ‘Machinery’ 2006/42/EC – ‘Electromagnetic Compatibility’ 2014/30/EU –...

  • Page 36: Declaration Of Conformity

    Ateliers Busch S.A. Zone Industrielle CH-2906 Chevenez declares that the machine(s): COBRA NC 0450 A, COBRA NX 0450 A, COBRA NC 0650 A, COBRA NX 0650 A fulfill(s) all the relevant provisions from UK legislations: – Supply of Machinery (Safety) Regulations 2008 –...
  • Page 37 Note...
  • Page 38 Note...
  • Page 39 Note...
  • Page 40 Busch Vacuum Solutions We shape vacuum for you. Argentina Denmark Malaysia South Africa info@busch.com.ar info@busch.dk busch@busch.com.my info@busch.co.za Australia Finland Mexico Spain sales@busch.com.au info@busch.fi info@busch.com.mx contacto@buschiberica.es Austria France Netherlands Sweden busch@busch.at busch@busch.fr info@busch.nl info@busch.se Bangladesh Germany New Zealand Switzerland sales@busch.com.bd info@busch.de sales@busch.co.nz...

This manual is also suitable for:

Cobra nx 0650 aCobra

Table of Contents