BUSCH COBRA NX 0450 A Instruction Manual
Dry screw vacuum pumps
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Summary of Contents for BUSCH COBRA NX 0450 A
- Page 1 Instruction Manual COBRA Dry Screw Vacuum Pumps NX 0450 A, NX 0650 A Ateliers Busch S.A. Zone industrielle, 2906 Chevenez Switzerland 0870565358/B0004_en / Original instructions / Modifications reserved 13/10/2017...
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Page 2: Table Of Contents
Table of Contents Table of Contents 1 Safety........................... 3 2 Product Description ..................... 4 2.1 Operating Principle....................5 2.2 Application ......................5 2.3 Standard Features....................6 2.3.1 Water Cooling ..................6 2.3.2 Temperature Switch...................6 2.3.3 Sealing Systems ..................6 2.4 Optional Accessories..................... 6 2.4.1 Gas Ballast Valve..................6 2.4.2 Silencer ......................6 2.4.3 Barrier Gas System ..................6... -
Page 3: 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 4: Product Description
2 | Product Description Product Description IN, IS Barrier gas connection Barrier gas flow meter Barrier gas manometer Barrier gas pressure regulator Condensate drain Cooling water drain plug Cooling water inlet Cooling water outlet Eye bolt Gas ballast valve Suction connection Inlet screen Magnetic plug Motor terminal box... -
Page 5: 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. -
Page 6: Standard Features
3 | Transport 2.3 Standard Features 2.3.1 Water Cooling The machine is cooled by a cooling water circuit in the cylinder cover and cylinder. 2.3.2 Temperature Switch The temperature switch monitors the cooling water temperature of the machine. The temperature switch has two switch points: Switch point 1 (T Early warning Switch point 2 (T... -
Page 7: Storage
Storage | 4 WARNING Lifting the machine using the motor eye bolt. Risk of severe injury! • Do not lift the machine using the eye bolt fitted to the motor. Only lift the machine as previously 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 in- gress into the cylinder. -
Page 8: Connecting Lines / Pipes
– 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. 8 / 28 0870565358_NX0450-0650A_B0004_IM_en... -
Page 9: Discharge Connection
Installation | 5 5.2.2 Discharge Connection COBRA Discharge variants (without silencer) Connection size: At the machine discharge connection: – G2 for NX 0450 A, horizontal (orientable 180°) – G3 for NX 0650 A, horizontal (orientable 180°) – DIN63 ISO-K, DIN 28404 for NX 0450 A, vertical (without discharge elbow) –... -
Page 10: Barrier Gas System Connection (Optional)
• Make sure that the water flow of the cooling water at the outlet (CWO) is monitored. If it is not possible, Busch recommends calibrating the flow with one or two orifices depending on the water pressure, see the following table:... -
Page 11: 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 [► 24] and Oil [► 24]. Oil filling at the motor side... -
Page 12: Electrical Connection
• Provide 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 13: Wiring Diagram Three-Phase Motor (Pump Drive)
Installation | 5 • Electrically connect the motor. NOTICE The admissible motor nominal speed exceeds the recommendation. Risk of damage to the machine! • Check the admissible motor nominal speed (n ) on the nameplate of the machine (NP). • Make sure to comply with it. •... -
Page 14: Electrical Connection Of The Monitoring Devices
• Switch any two of the motor phase wires. 5.5 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 10 seconds. 5.5.1 Wiring Diagram Temperature Switch Part no.: 0651 563 762... -
Page 15: Commissioning
Commissioning | 6 Commissioning NOTICE The machine is shipped without oil. Operation without oil will ruin the machine in short time! • Prior to commissioning, the machine must be filled with oil, see Filling Oil [► 11]. NOTICE Lubricating a dry running machine (process chamber). Risk of damage to the machine! •... -
Page 16: Maintenance
Monthly • Check the oil level, see Oil Level Inspection [► 17]. • 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 17: Oil Level Inspection
Every 25000 hours, at the • Have a major overhaul on the machine (contact latest after 4 years Busch). 7.2 Oil Level Inspection • Shut down the machine. • When the machine is stopped, wait 1 minute before checking the oil level. -
Page 18: Cleaning The Gas Ballast Filter (Optional)
36 mm wrench Compressed air 7.5 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. 18 / 28 0870565358_NX0450-0650A_B0004_IM_en... - Page 19 Maintenance | 7 Oil draining at the motor side Cleaning cloth Magnetic plug Drain pan Oil draining at the suction side Cleaning cloth Magnetic plug Drain pan 0870565358_NX0450-0650A_B0004_IM_en 19 / 28...
- Page 20 7 | Maintenance For oil type and oil capacity see Technical Data [► 24] and Oil [► 24]. Oil filling at the motor side Check oil level Oil filling at the inlet side Check oil level When the oil filling is achieved: •...
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Page 21: Overhaul
• Decontaminate the machine as well as possible and state the contamination status 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) Decommissioning •... -
Page 22: Dismantling And Disposal
• The exclusive use of Busch genuine spare parts and consumables is recommended for the proper function of the machine and for granting of warranty. There is no standard spare parts kits available for this product, if you require Busch gen- uine parts: •... - Page 23 • Seek advice from your local Busch representa- tive. The inlet screen (IS) is par- • Clean the inlet screen (IS), tially clogged. see Cleaning the Inlet Screen [► 17].
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Page 24: 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) Nominal motor rating... -
Page 25: Eu Declaration Of Conformity
This Declaration of Conformity and the CE-mark affixed to the nameplate are valid for the machine within the Busch scope of delivery. This Declaration of Conformity is issued under the sole responsibility of the manufacturer. When this machine is integrated into a superordinate machinery the manufacturer of the superordinate machinery (this can be the operating company, too) must conduct the conformity assessment process for the superordinate machine or plant, issue the Declaration of Conformity for it and affix the CE-mark. - Page 26 Note...
- Page 27 Note...
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