BUSCH COBRA NC 0400 B Instruction Manual
Dry screw vacuum pumps
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- Page 1 Instruction Manual COBRA Dry Screw Vacuum Pumps NC 0400 B (water-cooled version) Ateliers Busch S.A. Zone industrielle, 2906 Chevenez Switzerland 0870565283/A0005_en / Original instructions / Modifications reserved 10/04/2019...
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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 ....................... 6 2.4 Standard Features....................6 2.4.1 Water Cooling ...................6 2.4.2 Temperature Switch...................7 2.4.3 Thermometer.....................7 2.4.4 Sealing Systems ..................7 2.5 Optional Accessories..................... - Page 3 Table of Contents 7.5 Oil Change ......................28 7.6 Cooling Liquid Change ..................31 8 Overhaul........................32 9 Decommissioning ......................32 9.1 Dismantling and Disposal..................32 10 Spare Parts ........................33 11 Troubleshooting......................34 12 Technical Data ......................36 13 Cooling Liquid ......................36 14 Oil ..........................
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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 anything on the product. -
Page 5: Product Description
Product Description | 2 Product Description PMR CLP Condensate drain Cooling liquid drain plug Cooling liquid fill plug Cooling liquid sight glass Cooling liquid pump Cooling water inlet Cooling water outlet Eye bolt Gas ballast valve Suction connection Magnetic plug Motor terminal box Nameplate Oil drain plug... -
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 [► 36]. -
Page 7: Temperature Switch
Product Description | 2 2.4.2 Temperature Switch The temperature switch monitors the oil temperature of the machine. The machine must be stopped when the temperature switch trips (85 °C). 2.4.3 Thermometer The thermometer allows a visual display of the cooling liquid temperature. 2.4.4 Sealing Systems The machine is equipped with labyrinth seals on the motor side and suction side. -
Page 8: Nitrogen Panel
3 | Transport 2.5.6 Nitrogen Panel The nitrogen panel fitted to the base frame allows the supply of nitrogen to a number of different points on the machine. Each device consists of a solenoid valve to open or close the gas circuit, a pressure regu- lator and a flow meter to adjust pressure and volume flow separately. -
Page 9: Storage
Storage | 4 Machine weight: see the technical data or the nameplate (NP) 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. -
Page 10: Installation
• Make sure that the cooling water complies with the requirements, see Cooling Water Connection [► 12]. 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 •... -
Page 11: Suction Connection
If a purge gas system or a liquid flushing device being installed: – DN80 PN16, EN 1092-1 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 12: Cooling Water Connection
5 | Installation 5.2.3 Cooling Water Connection Cooling water inlet Cooling water outlet Plate heat exchanger • Connect the cooling water connections (CWI / CWO) to the water supply. Connection size: – G1/2, ISO 228-1 (CWI / CWO) • Make sure that the cooling water complies with the following requirements: Supply capacity l/min 4 ... -
Page 13: Barrier Gas System Connection (Optional)
Installation | 5 5.2.4 Barrier Gas System Connection (Optional) Without nitrogen panel Barrier gas connection Flow meter Flow regulator Manometer Pressure regulating valve With nitrogen panel FME, FS Barrier gas connection Flow meter Flow switch Manometer Solenoid valve Nitrogen panel Pressure regulating valve •... -
Page 14: Dilution Gas System Connection (Optional)
5 | Installation Gas type Dry nitrogen or air Gas temperature °C 0 ... 60 Maximum gas pressure Recommended pressure setting at the pressure regulating valve (PRV) Filtration µm Recommended flow rate SLM* 2 ... 3 Air quality (only for air) Acc. -
Page 15: Purge Gas System Connection (Optional)
Installation | 5 5.2.6 Purge Gas System Connection (Optional) FME, FR Purge gas connection Flow meter Flow regulator Inlet flange Manometer Solenoid valve Nitrogen panel Pressure regulating valve • Connect the purge gas connection to the gas supply. Connection size: –... -
Page 16: 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 [► 36] and Oil [► 36]. Oil filling at the motor side... - Page 17 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 Busch representative. 0870565283_NC0400B_WCV_A0005_IM_en 17 / 40...
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Page 18: Filling Cooling Liquid
5 | Installation 5.4 Filling Cooling Liquid For cooling liquid type and cooling liquid capacity see Technical Data [► 36] and Cooling Liquid [► 36]. Check cooling liquid level 5.5 Liquid Flushing Device Installation (Optional) Flushing liquid fill plug Flushing liquid vessel Flow regulator Inlet flange Level indicator... -
Page 19: Fitting The Coupling
Installation | 5 • Electrically connect the solenoid valve (MV), see Wiring Diagram Solenoid Valve [► 22]. • Electrically connect the two level switches (LS), see Wiring Diagram Level Switch [► 22]. • Fill the flushing liquid vessel (FLV) with a process compatible flushing liquid. 5.6 Fitting the Coupling Coupling hub (machine side) Coupling spider... -
Page 20: 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 21: Wiring Diagram Three-Phase Motor (Pump Drive)
Installation | 5 5.7.1 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 22: Wiring Diagram Solenoid Valve (Optional)
2 (-) 5.8 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. 5.8.1 Wiring Diagram Temperature Switch Part no.: 0651 556 533 U = 250 VAC ;... -
Page 23: Commissioning
Commissioning | 6 Commissioning NOTICE The machine can be 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 [► 16]. NOTICE The machine can be shipped without cooling liquid. Operation without cooling liquid will ruin the machine in short time! •... -
Page 24: Conveying Condensable Vapours
6 | Commissioning • After a few minutes of operation, perform a Cooling Liquid Level Inspection [► 27]. As soon as the machine is operated under normal operating conditions: • Measure the motor current and record it as reference for future maintenance and troubleshooting work. -
Page 25: Gas Purging Procedure
• Do not use incompatible solvents to clean the machine. CAUTION Failing to properly maintain the machine. Risk of injuries! Risk of premature failure and loss of efficiency! • Respect the maintenance intervals or ask your Busch representative for service. 0870565283_NC0400B_WCV_A0005_IM_en 25 / 40... -
Page 26: Maintenance Schedule
• Check the cooling liquid level, see Cooling Liquid Level Inspection [► 27]. • 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 27: Oil Level Inspection
7.3 Cooling Liquid Level Inspection • Shut down the machine. • Fill up if necessary, see Filling Cooling Liquid [► 18]. 7.4 Replacing the Gas Ballast Filter (Optional) Busch genuine spare parts Gas ballast filter: part no. 0562 550 434 Discard the part 0870565283_NC0400B_WCV_A0005_IM_en... -
Page 28: 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 29 Maintenance | 7 Oil draining at the suction side Cleaning cloth Magnetic plug Drain pan For oil type and oil capacity see Technical Data [► 36] and Oil [► 36]. Oil filling at the motor side Check oil level 0870565283_NC0400B_WCV_A0005_IM_en 29 / 40...
- Page 30 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 Busch representative. 30 / 40 0870565283_NC0400B_WCV_A0005_IM_en...
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Page 31: Cooling Liquid Change
Maintenance | 7 7.6 Cooling Liquid Change For cooling liquid type and cooling liquid capacity see Technical Data [► 36] and Cooling Liquid [► 36]. Check cooling liquid level 0870565283_NC0400B_WCV_A0005_IM_en 31 / 40... -
Page 32: 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 binding signed ‘Declaration of Contamination’. (Form downloadable from www.buschvacuum.com) Decommissioning •... -
Page 33: 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 34: Troubleshooting
Busch). Solid foreign matter has • Remove the solid foreign entered the machine. matter or repair the ma- chine (contact Busch). • Install an inlet filter if ne- cessary. A temperature sensor has • Let the machine cool reached the switch point. - Page 35 • Seek advice from your local Busch representa- tive. Process deposits on the • Flush the machine. pumping components If an inlet screen or an inlet •...
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Page 36: Technical Data
12 | Technical Data 12 Technical Data NC 0400 B Pumping speed m³/h 350 / 420 (50Hz / 60Hz) Ultimate pressure (without gas ballast) hPa (mbar) abs. ≤0.05 / ≤0.01 (50Hz / 60Hz) Ultimate pressure (with gas ballast) hPa (mbar) abs. ≤0.1 / ≤0.1 (50Hz / 60Hz) Nominal motor rating 7.5 / 9.5... -
Page 37: 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 38 Note...
- Page 39 Note...
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