BUSCH COBRA Instruction Manual
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Summary of Contents for BUSCH COBRA
- Page 1 Instruction Manual COBRA Dry Screw Vacuum Pumps NC 1500 B VR (Vapor Recovery) 0870573045/A0004_en / Original instructions / Modifications reserved 14/09/2021...
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Page 2: Table Of Contents
7.3 Oil Change ........................22 7.4 Checking the Liquid Return System................26 8 Overhaul..........................27 9 Decommissioning ........................27 9.1 Dismantling and Disposal....................27 10 Spare Parts ..........................28 11 Troubleshooting........................29 12 Technical Data........................31 13 Oil ............................31 2 / 36 Instruction Manual COBRA NC 1500 B VR_EN_en... - Page 3 Table of Contents 14 EU Declaration of Conformity ....................32 Instruction Manual COBRA NC 1500 B VR_EN_en...
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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 any- thing on the product. -
Page 5: Product Description
Oil fill plug Oil sight glass Discharge connection Liquid return system vessel NOTE Technical term. In this instruction manual, we consider that the term ‘machine’ refers to the ‘vacuum pump’. Instruction Manual COBRA NC 1500 B VR_EN_en 5 / 36... -
Page 6: Operating Principle
The machine is equipped with oil lubricated single mechanical seal with labyrinth seal on the motor side and oil lubricated single mechanical seal with lip seal on the suction side. 6 / 36 Instruction Manual COBRA NC 1500 B VR_EN_en... -
Page 7: Liquid Return System
Product Description | 2 2.4.3 Liquid Return System The liquid return system allows any excess cooling liquid to be reinjected into the inlet flange. Instruction Manual COBRA NC 1500 B VR_EN_en 7 / 36... -
Page 8: Optional Accessories
TSA+ 0101 TSA+ 0102 = optional Cooling liquid inlet connection Cooling liquid outlet connection Coupling Suction connection Injection point Level switch Motor Discharge connection Resistance thermometer Liquid return system vessel 8 / 36 Instruction Manual COBRA NC 1500 B VR_EN_en... -
Page 9: Transport
• Make sure that the eyebolt(s) (EB) is/are in faultless condition, fully screwed in and tightened by hand. Transport with motor Machine weight: see the technical data or the nameplate (NP) l2 = ~245 mm l1 = ~270 mm l3 = ~230 mm Instruction Manual COBRA NC 1500 B VR_EN_en 9 / 36... -
Page 10: Storage
Change [► 22]. This protects the mechanical seals during a long storage. Use the standard pump oil, see chapter Oil [► 31]. • Before restarting the machine, drain the oil to the normal oil level, see “Oil draining” in chapter Oil Change [► 22]. 10 / 36 Instruction Manual COBRA NC 1500 B VR_EN_en... -
Page 11: Installation
• Make sure that the cooling liquid complies with the requirements, see Installation and Commissioning Parameters [► 19]. 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. 5.2 Connecting Lines / Pipes WARNING The connection lines can build up an electrostatic charge. -
Page 12: Suction Connection
– DN100 PN16, EN 1092-1 – ANSI 150, 4” (optional) 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... -
Page 13: Earth Connection
5.4 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. Instruction Manual COBRA NC 1500 B VR_EN_en 13 / 36... - Page 14 Oil filling at the motor side Check oil level Oil filling at the suction side Check oil level When the oil filling is achieved: • Write down the oil change date on the sticker. 14 / 36 Instruction Manual COBRA NC 1500 B VR_EN_en...
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Page 15: Fitting The Coupling
5.5.1 Coupling Alignment The recommended radial and angular displacement/ alignment limitations for the CO- BRA NC 1500 B VR pump/ coupling alignment should not exceed 0.01 mm in any di- rection. Instruction Manual COBRA NC 1500 B VR_EN_en 15 / 36... -
Page 16: 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 17: Wiring Diagram Three-Phase Motor (Pump Drive)
• Watch the fan wheel of the motor and determine the direction of rotation just before the fan wheel stops. If the rotation of the motor must be changed: • Switch any two of the motor phase wires. Instruction Manual COBRA NC 1500 B VR_EN_en 17 / 36... -
Page 18: Electrical Connection Of The Monitoring Devices
5 | Installation 5.7 Electrical Connection of the Monitoring Devices NOTE In order to prevent potential nuisance alarms, Busch allows that the control system is configured with a time delay of 2 seconds. NOTE The accessories below are considered as standard. -
Page 19: Installation And Commissioning Parameters
Should the operating conditions of your machine fall outside of the recommended pa- rameters as outlined, please contact your local Busch agency for advice. Commissioning NOTICE The machine can be shipped without oil. -
Page 20: Start-Up
When the work has been completed follow the procedure Start-Up [► 20]. • Remove the warning board and safety perimeter. • Check the oil levels, see Oil Level Inspection [► 22]. • Connect the machine to the power supply. 20 / 36 Instruction Manual COBRA NC 1500 B VR_EN_en... -
Page 21: 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. • Turn off the cooling liquid supply. -
Page 22: Oil Level Inspection
7.3 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. 22 / 36 Instruction Manual COBRA NC 1500 B VR_EN_en... - Page 23 Maintenance | 7 Oil draining at the motor side Cleaning cloth Magnetic plug Instruction Manual COBRA NC 1500 B VR_EN_en 23 / 36...
- Page 24 Oil draining at the suction side Cleaning cloth Magnetic plug Drain pan For oil type and oil capacity see Technical Data [► 31] and Oil [► 31]. Oil filling at the motor side Check oil level 24 / 36 Instruction Manual COBRA NC 1500 B VR_EN_en...
- Page 25 __ / __ / ____ 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. Instruction Manual COBRA NC 1500 B VR_EN_en 25 / 36...
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Page 26: Checking The Liquid Return System
7 | Maintenance 7.4 Checking the Liquid Return System Check the mechanism and clean it if necessary If necessary, drain the vessel prior disassemble 26 / 36 Instruction Manual COBRA NC 1500 B VR_EN_en... -
Page 27: Overhaul
• Decontaminate the machine as much 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 bind- ing signed ‘Declaration of Contamination’ (form downloadable from www.buschvacuum.com). -
Page 28: 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 genuine parts: •... -
Page 29: Troubleshooting
• Use one of the recom- noisily. suitable oil type. mended oils in the cor- rect quantity, see Oil [► 31]. Defective gears, bearings • Repair machine (contact or coupling element. Busch). Instruction Manual COBRA NC 1500 B VR_EN_en 29 / 36... - Page 30 [► 22]. The machine runs too hot. • See problem "The ma- chine runs too hot". For the solution of problems not mentioned in the troubleshooting chart contact your Busch representative. 30 / 36 Instruction Manual COBRA NC 1500 B VR_EN_en...
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Page 31: Technical Data
[► 19] Oil capacity - motor side Oil capacity - suction side Weight approx. 1250 Please contact your Busch representative if the operating conditions fall outside of the recommend- ed parameters as outlined. 13 Oil Shell Tellus Shell Tellus TOTAL AZOLLA... - Page 32 14 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 manufac- turer.
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