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11 | Troubleshooting

32 / 36

0870557375_NC2000B_VR_Ex_A0002_IM_en

The machine runs too hot.

Insufficient cooling.

• Make sure to comply with

the cooling liquid require-
ments, see 

Cooling Liquid

Connection [

 13]

.

Ambient temperature too
high.

• Observe the permitted

ambient temperature, see

Technical Data [

 33]

.

Temperature of the process
gases at the inlet too high.

• Observe the permitted

gas inlet temperature, see

Technical Data [

 33]

.

Oil level too low.

• Top up oil.

The oil is black.

Oil change intervals are too
long.

• Drain the oil and fill in

new oil, see 

Oil Change

[

 26]

.

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.

Содержание COBRA ATEX

Страница 1: ...n Manual COBRA ATEX Dry Screw Vacuum Pumps NC 2000 B VR Vapour Recovery 0870557375 A0002_en Original instructions Modifications reserved 25 09 2018 Ateliers Busch S A Zone industrielle 2906 Chevenez S...

Страница 2: ...agram 9 3 Transport 10 4 Storage 11 5 Installation 11 5 1 Installation Conditions 11 5 2 Connecting Lines Pipes 12 5 2 1 Suction Connection 12 5 2 2 Discharge Connection 13 5 2 3 Cooling Liquid Connec...

Страница 3: ...7 4 1 Procedure A 29 7 4 2 Procedure C 29 7 4 3 Procedure D 29 7 4 4 Procedure F 29 8 Overhaul 30 9 Decommissioning 30 9 1 Dismantling and Disposal 30 10 Spare Parts 31 11 Troubleshooting 31 12 Techni...

Страница 4: ...een 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 warn...

Страница 5: ...Cooling liquid drain plug CLI Cooling liquid inlet connection CLO Cooling liquid outlet connection EB Eye bolt ECP Earth connection machine IN Suction connection INJ Injection point LS Level switch M...

Страница 6: ...n be drawn in according to the scope of the Dir ective ATEX 2014 34 EU The machine is intended for the suction of explosive gases and for the placement in a potentially explosive environment according...

Страница 7: ...p outlet 2 4 2 Vibration Analysis System The machine must be stopped when the vibration limit value preset at the factory is reached see Wiring Diagram Vibration Sensor 19 The vibration analysis syste...

Страница 8: ...has two different nameplates A nameplate NP1 is fixed on the base frame of the machine with the ATEX marking inscription A second nameplate NP2 is fixed on the machine stage module identifying that t...

Страница 9: ...p earth connection MOT ATEX Motor IIB LS Level switch PSA Pressure transmitter PS Pressure switch SA Vibration transmitter TSA Resistance thermometer 2 7 2 P ID Piping and Instrumentation Diagram IN O...

Страница 10: ...to every transport or always horizontally transport the machine Make sure that the eyebolt EB is in faultless condition fully screwed in and tightened by hand Machine weight see the technical data or...

Страница 11: ...to the data given on the nameplate of the motor and the nameplate of the machine NP Make sure that the ambient conditions comply with the Technical Data 33 Make sure that the environmental conditions...

Страница 12: ...ger line sizes in order to avoid a loss of efficiency Seek advice from your Busch representative WARNING The connection lines can be built up by electrostatic charge Risk of severe injury Risk of expl...

Страница 13: ...pressure also termed back pressure at the discharge con nection OUT does not exceed the maximum allowable discharge pressure see Tech nical Data 33 5 2 3 Cooling Liquid Connection CLI CLO INJ CLI Cool...

Страница 14: ...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 33 and...

Страница 15: ...level 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...

Страница 16: ...nstruction manual of the Samiflex coupling 5 6 Electrical Connection DANGER Live wires Risk of electrical shock Electrical installation work must only be executed by qualified personnel Make sure that...

Страница 17: ...1200 min 1 20 Hz NOTICE Incorrect connection Risk of damage to the motor The wiring diagrams given below are typical Check the inside of the terminal box for motor connection instructions diagrams 5 6...

Страница 18: ...ould be used refer to the instruction manual of the ac cessory in question 5 7 1 Wiring Diagram Resistance Thermometer Part no PT100 0651 550 436 Transmitter 0643 536 800 Supplier reference PT100 Albe...

Страница 19: ...Center CTC AC915 9C Vibration sensor ifm ifm electronic VSP01A Measuring transmitter ifm electronic VSE100 not ATEX certified install an intrinsic safety barrier Maintenance procedure Procedure D 29 P...

Страница 20: ...ed The maximum time between two level checks is 24 hours The level switch outputs LSA 0201 and LSA 0202 are to be ignored during the cyc lic operation oft he machine 5 8 Operating Parameters Make sure...

Страница 21: ...70557375_NC2000B_VR_Ex_A0002_IM_en 21 36 The quantity of cooling liquid injected should be sufficient to ensure that at no time during the operation of the pump the maximum exhaust gas outlet temperat...

Страница 22: ...ng liquid inlet CLI Additional sequences may be added if optional monitoring accessories have been installed SA 0701 NO YES NO LS 0201 T T warning YES NO High vibration Warning T T trip YES NO YES NO...

Страница 23: ...sons are present in the vicinity of a non noise insulated machine over extended periods Make sure that ear protection is being used 6 1 Start Up Make sure that the installation conditions see Installa...

Страница 24: ...re that the machine is empty Replace all previously removed drain plugs When the work has been completed follow the procedure Start Up 23 Remove the warning board and safety perimeter Check the oil le...

Страница 25: ...ired to be considered as starting values which should be shortened or extended as appropriate Particularly harsh applications or heavy duty oper ation such as high dust loads in the environment or in...

Страница 26: ...MAX MIN 3 mm MAX MIN 3 mm MAX MIN 3 mm Oil sight glass on motor side Oil sight glass on suction side Fill up if necessary see Oil Filling 14 7 3 Oil Change NOTICE Use of an inappropriate oil Risk of...

Страница 27: ...Maintenance 7 0870557375_NC2000B_VR_Ex_A0002_IM_en 27 36 3 2 1 Magnetic plug 2 3 5 1 7 6 4 Oil draining at the suction side Cleaning cloth Drain pan Magnetic plug...

Страница 28: ...y see Technical Data 33 and Oil 33 1 2 7 8 3 6 5 MAX MIN B u s c h O il 4 Check oil level Oil filling at the motor side 1 4 1 B u s c h O il 2 3 MAX MIN 3 mm Check oil level Oil filling at the suction...

Страница 29: ...hine 7 4 2 Procedure C Remove the pressure transmitter from the machine Compare it with another calibrated pressure transmitter or send it to an approved laboratory for inspection Reassemble the press...

Страница 30: ...hich are dangerous to health 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 complet...

Страница 31: ...lid foreign matter or repair the ma chine contact Busch Install an inlet filter if ne cessary The motor is defective Replace the motor The machine does not reach the usual pressure on the suction conn...

Страница 32: ...temperature see Technical Data 33 Temperature of the process gases at the inlet too high Observe the permitted gas inlet temperature see Technical Data 33 Oil level too low Top up oil The oil is blac...

Страница 33: ...nt pressure Atmospheric pressure Cooling liquid requirements See Operating Parameters 20 Cooling liquid Pressure of the network bar Min 1 5 Max 6 relative Cooling liquid pressure bar Max 6 Oil capacit...

Страница 34: ...esign EN ISO 13857 2008 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 EN ISO 2151 2008 Acoustics Noise t...

Страница 35: ...Note...

Страница 36: ...an www busch co jp Korea www busch co kr Malaysia www busch com my Mexico www busch com mx Netherlands www busch nl New Zealand www busch com au Norway www busch no Peru www busch com pe Poland www bu...

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