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Instruction Manual COBRA NC 0500 B_EN_en

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 (100 °C).

2.4.3

Thermometer

The thermometer allows a visual display of the cooling liquid temperature.

2.4.4

Silencer

The silencer reduces the exhaust gas noise at the machine discharge (OUT).

2.4.5

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.

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Содержание COBRA NC 0500 B

Страница 1: ...Get technical data instruction manuals service kits COBRA Dry Screw Vacuum Pumps NC 0500 B Instruction Manual 0870549522 A0002_en Original instructions 28 02 2022 ...

Страница 2: ... Water Connection 11 5 3 Filling Oil 12 5 4 Filling Cooling Liquid 13 5 5 Electrical Connection 13 5 5 1 Wiring Diagram Three Phase Motor Pump Drive 14 5 6 Electrical Connection of the Monitoring Devices 15 5 6 1 Wiring Diagram Temperature Switch 15 6 Commissioning 16 7 Maintenance 18 7 1 Draining the Cooling Water 18 7 2 Maintenance Schedule 19 7 3 Oil Level Inspection 19 7 4 Cooling Liquid Level...

Страница 3: ...as been designed and manufactured according to state of the art methods Nevertheless residual risks may remain This instruction manual highlights potential hazards where appropriate Safety notes and warning messages are tagged with one of the keywords DANGER WARNING CAUTION NOTICE and NOTE as follows DANGER indicates an imminent dangerous situation that will result in death or serious injuries if ...

Страница 4: ... sight glass CLP Cooling liquid pump CWI Cooling water inlet CWO Cooling water outlet EB Eye bolt ECO Electrical connection IN Suction connection MP Magnetic plug NP Nameplate ODP Oil drain plug OFP Oil fill plug OSG Oil sight glass OUT Discharge connection PMR Plug for manual rotation of rotors SI Silencer SV Safety valve TM Thermometer TS Temperature switch NOTE Technical term In this instructio...

Страница 5: ... thermal and or mechanical load on the machine and is permissible only after a consultation with Busch The machine is capable of maintaining ultimate pressure see Technical Data 29 The machine is suitable for continuous operation The machine is suitable for use in an installation with a vacuum chamber volume no larger than 80 litres Permitted environmental conditions see Technical Data 29 2 3 Star...

Страница 6: ...hen the temperature switch trips 100 C 2 4 3 Thermometer The thermometer allows a visual display of the cooling liquid temperature 2 4 4 Silencer The silencer reduces the exhaust gas noise at the machine discharge OUT 2 4 5 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 ...

Страница 7: ...n 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 ingress into the cylinder Drain the oil prior to every transport or always horizontally transport the machine To find out the weight of the machine refer to the chapter Technical Data 29 or the nameplate NP 1 2 Description 1 Length of slings 3x 600 mm 2 Opt...

Страница 8: ...atures between 5 55 C To avoid frost damage drain the cooling water See Maintenance 18 NOTICE Long storage time Risk of damage to the machine If the machine is equipped with oil lubricated mechanical seals we recommend to completely fill the oil chamber before a long storage see Oil filling in chapter Oil Change 20 This protects the mechanical seals during a long storage Use the standard pump oil ...

Страница 9: ...ion space or location is protected from weather and lightning Make sure that the installation space or location is vented such that sufficient cooling of the machine is provided 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 in any direction is accepta...

Страница 10: ...ust or other foreign solid particles Install a suitable filter 5 micron or less upstream from the machine Connection size s G2 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 Connection size s G1 1 2 Make sure that the discharged gas will flow without obstruct...

Страница 11: ...rements Supply capacity l min 5 Water pressure bar 3 6 Supply temperature C 10 30 Required pressure differential across supply and return bar 1 To reduce the maintenance effort and ensure a long product lifetime we recommend the following cooling water quality Hardness mg l ppm 90 Properties Clean clear PH value 7 8 Particle size µm 200 Chloride mg l 100 Electrical conductivity µS cm 100 Free chlo...

Страница 12: ...500 B_EN_en 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 For oil type and oil capacity see Technical Data 29 and Oil 31 ...

Страница 13: ...it from your Busch representative 5 4 Filling Cooling Liquid For cooling liquid type and cooling liquid capacity see Technical Data 29 and Cooling Liquid 30 5 5 Electrical Connection DANGER Live wires Risk of electrical shock Electrical installation work must only be executed by qualified personnel Make sure that the power supply for the motor is compatible with the data on the nameplate of the mo...

Страница 14: ...dmissible motor nominal speed nmax on the nameplate of the machine NP Make sure to comply with it Consult the Technical Data 29 to get more information NOTICE The motor frequency is below 20 Hz Risk of damage to the machine The motor nominal speed must always be higher than 1200 min 1 20 Hz 5 5 1 Wiring Diagram Three Phase Motor Pump Drive Delta connection low voltage Star connection high voltage ...

Страница 15: ... any two of the motor phase wires 5 6 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 6 1 Wiring Diagram Temperature Switch Part no 0651 541 566 U 250 VAC I 2 5 A cosφ 1 U 250 VAC I 1 6 A cosφ 0 6 U 48 VDC I 1 25 A Contact Normally closed Switch point...

Страница 16: ...ce 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 periods Make sure that ear protection is being used Make sure that the installation conditions see Installation Con...

Страница 17: ...Commissioning 6 Instruction Manual COBRA NC 0500 B_EN_en 17 36 Measure the motor current and record it as reference for future maintenance and troubleshooting work ...

Страница 18: ... Risk of injuries Risk of premature failure and loss of efficiency Maintenance work must only be executed by qualified personnel Respect the maintenance intervals or ask your Busch representative for service Shut down the machine and lock against inadvertent start up Turn off the water supply Vent the connected lines to atmospheric pressure If necessary Disconnect all connections 7 1 Draining the ...

Страница 19: ...ng Liquid Level Inspection 20 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 Check the electrical connections and the monitoring devices Every 1000 hours Check the silence SI and clean it if necessary Every 5000 hours or after 1 year Change the oil of the gear and bearing housing...

Страница 20: ...Liquid Level Inspection Shut down the machine Fill up if necessary see Filling Cooling Liquid 13 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 MP ...

Страница 21: ...Maintenance 7 Instruction Manual COBRA NC 0500 B_EN_en 21 36 MP For oil type and oil capacity see Technical Data 29 and Oil 31 ...

Страница 22: ...en 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 If there is no sticker part no 0565 568 959 on the machine Order it from your Busch representative ...

Страница 23: ...Maintenance 7 Instruction Manual COBRA NC 0500 B_EN_en 23 36 7 6 Cooling Liquid Change Refit all plugs For cooling liquid type and cooling liquid capacity see Technical Data 29 and Cooling Liquid 30 ...

Страница 24: ...hly recommended that any dismantling of the machine that goes beyond anything that is described in this manual should be done through Busch In case of the machine having conveyed gas that was contaminated with foreign materials which are dangerous to health Decontaminate the machine as much as possible and state the contamination status in a Declaration of Contamination Busch will only accept mach...

Страница 25: ...y Turn off the water supply Vent the connected lines to atmospheric pressure Disconnect all connections If the machine is going to be stored See Storage 8 9 1 Dismantling and Disposal Drain and collect the oil Make sure that no oil drips onto the floor Drain and collect the cooling liquid Make sure that no cooling liquid drips onto the floor Separate special waste from the machine Dispose of speci...

Страница 26: ...k of premature failure Loss of efficiency 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 Contact your Busch representative ...

Страница 27: ...red the machine Remove the solid foreign matter or repair the machine contact Busch Install an inlet filter if necessary The temperature switch TS reached the switch point Let the machine cool down See problem The machine runs too hot Corrosion in the machine from remaining condensate Repair the machine The motor is defective Replace the motor The machine does not reach the usual pressure on the s...

Страница 28: ...ments see Cooling Water Connection 11 Ambient temperature too high Observe the permitted ambient temperature see Technical Data 29 Temperature of the process gases at the inlet too high Observe the permitted gas inlet temperature see Technical Data 29 The cooling water pump is defective Repair the machine Oil level too low Top up oil The oil is black Oil change intervals are too long Drain the oil...

Страница 29: ...upply current A 50Hz A 60Hz 35 36 22 25 33 31 19 23 Noise level EN ISO 2151 dB A 69 Ambient temperature range C 5 50 Max allowable counter pressure at the discharge hPa mbar rel 100 Max allowable gas inlet temperature C 50 hPa mbar abs 200 50 hPa mbar abs 70 Relative humidity at 30 C 90 Ambient pressure Atmospheric pressure Cooling water requirements See Cooling Water Connection 11 Oil capacity mo...

Страница 30: ...ooling Liquid Zitrec M 25 ready to use Part number 5 L packaging 0831 563 469 Part number 20 L packaging 0831 238 761 The cooling liquid Zitrec M 25 is ready to use and does not require additional water For further information consult the website www arteco coolants com ...

Страница 31: ...Oil 14 Instruction Manual COBRA NC 0500 B_EN_en 31 36 14 Oil VSL 100 ISO VG 100 Part number 1 L packaging 0831 122 573 Part number 5 L packaging 0831 122 572 ...

Страница 32: ...lowing designated standards that have been used to fulfil those provisions Standards Title of the Standard EN ISO 12100 2010 Safety of machinery Basic concepts general principles of design EN ISO 13857 2019 Safety of machinery Safety distances to prevent hazard zones being reached by the upper and lower limbs EN 1012 1 2010 EN 1012 2 1996 A1 2009 Compressors and vacuum pumps Safety requirements Pa...

Страница 33: ... with the following designated standards that have been used to fulfil those provisions Standards Title of the Standard EN ISO 12100 2010 Safety of machinery Basic concepts general principles of design EN ISO 13857 2019 Safety of machinery Safety distances to prevent hazard zones being reached by the upper and lower limbs EN 1012 1 2010 EN 1012 2 1996 A1 2009 Compressors and vacuum pumps Safety re...

Страница 34: ...34 36 Instruction Manual COBRA NC 0500 B_EN_en Notes ...

Страница 35: ...Instruction Manual COBRA NC 0500 B_EN_en 35 36 ...

Страница 36: ...presence In every country highly competent local personnel delivers custom tailored support backed by a global network of expertise Wherever you are Whatever your business We are there for you Local representatives and distributors Busch companies and Busch employees Busch production site www buschvacuum com 0870549522 A0002_en ...

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