BUSCH COBRA NC 0600 C Instruction Manual Download Page 35

Page: 35 / 40

Troubleshooting | 11

0870567092_NC0630C_WCV_A0006_IM_en

35 / 40

The machine runs too hot.

Insufficient cooling.

• Make sure to comply with

the cooling water require-
ments, see

Ambient temperature too
high.

• Observe the permitted

ambient temperature, see

Technical Data [

►

36]

Temperature of the process
gases at the inlet too high.

• Observe the permitted

gas inlet temperature, see

Technical Data [

►

36]

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 and fill in

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.

Summary of Contents for COBRA NC 0600 C

Page 1: ...Dry Screw Vacuum Pumps NC 0600 C water cooled version NC 0630 C water cooled version 0870567092 A0006_en Original instructions Modifications reserved 21 03 2019 Ateliers Busch S A Zone industrielle 2...

Page 2: ...tion 11 5 2 4 Barrier Gas System Connection Optional 12 5 2 5 Dilution Gas System Connection Optional 14 5 2 6 Purge Gas System Connection Optional 15 5 3 Filling Oil 15 5 4 Filling Cooling Liquid 17...

Page 3: ...M_en 3 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 33 12 Technical Data 36 13 Cooling Liquid...

Page 4: ...en designed and manufactured according to state of the art meth ods Nevertheless residual risks may remain This instruction manual highlights potential hazards where appropriate Safety notes and warni...

Page 5: ...ooling liquid fill plug CLP Cooling liquid pump CLV Cooling liquid vent plug CWI Cooling water inlet CWO Cooling water outlet EB Eye bolt GB Gas ballast valve IN Suction connection MP Magnetic plug MT...

Page 6: ...ing 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 potent...

Page 7: ...as The inlet filter is available with a paper cartridge 2 5 2 Gas Ballast Valve The gas ballast valve mixes the process gas with a limited quantity of ambient air to counteract the condensation of vap...

Page 8: ...let flange allows to flush the machine after use or during operation The nitrogen is fed into the inlet flange 2 5 7 Liquid Flushing Device The liquid flushing device allows the machine to be flushed...

Page 9: ...rrosion inhibiting film Store the machine indoors dry dust free and if possible in original packaging preferably at temperatures between 5 55 C 5 Installation 5 1 Installation Conditions NOTICE Use of...

Page 10: ...all protective caps before installation Make sure that the connection lines cause no stress on the machine s connection if necessary use flexible joints Make sure that the line size of the connection...

Page 11: ...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 36 5 2 3 Cooling Wat...

Page 12: ...m 200 Chloride mg l 100 Electrical conductivity S cm 100 Free chloride mg l 0 3 Materials in contact with the cooling water Stainless steel NOTE Water hardness unit conversion 1 mg l ppm 0 056 dh germ...

Page 13: ...ith nitrogen panel Electrically connect the solenoid valve MV see Wiring Diagram Solenoid Valve 21 Electrically connect the flow switch FS of the flow meter see Wiring Diagram Flow Switch 21 Make sure...

Page 14: ...ing valve Connect the dilution gas connection DGC to the gas supply Connection size G1 4 ISO 228 1 Electrically connect the solenoid valve MV see Wiring Diagram Solenoid Valve 21 Make sure that the ga...

Page 15: ...1 4 ISO 228 1 Electrically connect the solenoid valve MV see Wiring Diagram Solenoid Valve 21 Make sure that the gas complies with the following requirements Gas type Dry nitrogen Gas temperature C 0...

Page 16: ...0C_WCV_A0006_IM_en For oil type and oil capacity see Technical Data 36 and Oil 36 1 2 B u s c h O il 3 MAX MIN 4 Check oil level Oil filling at the motor side 1 2 B u s c h O il 3 MAX MIN 4 Check oil...

Page 17: ...pe 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 5 4 Filling Cooling Liquid For cooling liquid...

Page 18: ...valve Electrically connect the solenoid valve MV see Wiring Diagram Solenoid Valve 21 Electrically connect the two level switches LS see Wiring Diagram Level Switch 22 Fill the flushing liquid vessel...

Page 19: ...of the motor The electrical installation must comply with applicable national and international standards Provide a lockable disconnect switch on the power line so that the machine is com pletely sec...

Page 20: ...voltage Double star connection multi voltage motor with 12 pins low voltage 4 4 4 Star connection multi voltage motor with 12 pins high voltage 4 4 4 Delta connection multi voltage motor with 12 pins...

Page 21: ...l 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 D...

Page 22: ...evel Switch Optional Part no 0652 556 531 Connector M12x1 4 pin 6 mW at I 1 mA 38 mW at I 3 5 mA Switching element function NAMUR Contact Normally closed 1 2 4 3 4 1 L 1 Brown 4 Black Switch point Lwa...

Page 23: ...ures 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 vicinit...

Page 24: ...rm up the machine 30 minutes 30 minutes Open the inlet valve Perform the process Close the inlet valve Close the gas ballast valve or the dilution gas system END optional accessories Continuously drai...

Page 25: ...isk of poisoning Risk of infection If the machine is contaminated with hazardous material Wear appropriate personal protective equipment CAUTION Hot surface Risk of burns Prior to any action requiring...

Page 26: ...ection 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 Check the electrical co...

Page 27: ...ling Liquid Level Inspection Shut down the machine Let the machine cool down Fill up if necessary see Filling Cooling Liquid 17 7 4 Replacing the Gas Ballast Filter Optional 1 2 3 Discard the part Bus...

Page 28: ...n 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 1 2 3 Oil draining at...

Page 29: ...A0006_IM_en 29 40 2 1 3 4 Oil draining at the suction side Cleaning cloth Drain pan Magnetic plug For oil type and oil capacity see Technical Data 36 and Oil 36 1 2 B u s c h O il 3 MAX MIN 4 Check oi...

Page 30: ...l Oil filling at the suction side When 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 manua...

Page 31: ...0006_IM_en 31 40 7 6 Cooling Liquid Change 1 2 3 4 For cooling liquid type and cooling liquid capacity see Technical Data 36 and Cooling Liquid 36 1 2 C o o l i n g l i q u i d Z i t r e c M 2 5 3 4 F...

Page 32: ...inate 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 sig...

Page 33: ...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 Contact your Busch representative for the detailed spar...

Page 34: ...of Conveying Condensable Vapours 24 The motor is defective Replace the motor The machine does not reach the usual pressure on the suction connection Suction or discharge lines too long or section diam...

Page 35: ...ta 36 Temperature of the process gases at the inlet too high Observe the permitted gas inlet temperature see Technical Data 36 The cooling water pump is defective Repair the machine Oil level too low...

Page 36: ...Max allowable gas inlet temperature C 50 hPa mbar 200 50 hPa mbar 70 Relative humidity at 30 C 90 Ambient pressure Atmospheric pressure Cooling water requirements See Cooling Water Connection 11 Oil c...

Page 37: ...electrical and elec tronic equipment and following the standards Standard Title of the Standard EN ISO 12100 2010 Safety of machinery Basic concepts general principles of design EN ISO 13857 2008 Safe...

Page 38: ...Note...

Page 39: ...Note...

Page 40: ...ch co jp Korea www buschvacuum com kr busch busch co kr Malaysia www busch com my busch busch com my Mexico www buschvacuum com mx info busch com mx Netherlands www buschvacuum com nl info busch nl Ne...

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