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9 | Overhaul

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Instruction Manual DOLPHIN LM 0100-0800 A, LT 0130-0750 A_EN_en

9

Overhaul

WARNING

Machines contaminated with hazardous material.
Risk of poisoning!
Risk of infection!

If the machine is contaminated with hazardous material:

●

Wear appropriate personal protective equipment.

NOTICE

Improper assembly.
Risk of premature failure!
Loss of efficiency!

●

Any dismantling of the machine that goes beyond anything that is described in this manual
should be done by Busch authorized technicians.

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 ‘Dec-
laration 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

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Summary of Contents for LM 0100 A

Page 1: ... kits DOLPHIN LM LT Liquid Ring Vacuum Pumps LM 0100 A LM 0180 A LM 0270 A LM 0530 A LM 0800 A LT 0130 A LT 0170 A LT 0220 A LT 0320 A LT 0430 A LT 0510 A LT 0630 A LT 0750 A Instruction Manual 0870206545 0003_en US Original instructions 8 18 2022 ...

Page 2: ...es 10 5 2 1 Suction Connection 10 5 2 2 Discharge Connection 10 5 2 3 Operating Liquid Connection 11 5 3 Operating Liquid Settings 13 5 4 Fitting the Coupling 14 5 5 Bolt Setting 15 6 Electrical Connection 16 6 1 Machine delivered without Control Box or Variable Speed Drive VSD 16 6 2 Machine delivered with a Variable Speed Drive Option 17 6 3 Wiring Diagram Three Phase Motor 18 7 Commissioning 20...

Page 3: ...ccording to state of the art methods Never theless residual risks may remain as described in the following chapters and in accordance with the chapter Intended Use 5 This instruction manual highlights potential hazards where appropri ate 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 sit...

Page 4: ...tation protection connection IN Suction connection GRP Grease point GVC Vacuum gauge or relief valve connection NP Nameplate OPD Operating liquid drain OPI Operating liquid inlet OPL Operating liquid level plug OUT Discharge connection GRP available on LM 0800 A LT 0630 A and LT 0750 A only OPI2 required for LM 0270 A LM 0530 A and LM 0800 A only NOTE Technical term In this instruction manual we c...

Page 5: ...ended Use WARNING In case of foreseeable misuse outside the intended use of the machine Risk of injuries Risk of damages to the machine Risk of damages to the environment Make sure to follow all instructions described in this manual The machine is intended for the suction of air vapor and other gases For explosive gases and vapors if a Ex inside sign is written on the nameplate please refer to the...

Page 6: ...mbar ultimate pressure 2 4 3 VL System VL System consists of a DOLPHIN machine either LM or LT and an operating liquid supply system Three different layouts are possible Once through cooling no recovery Partial recovery open circuit Total recovery closed circuit All of these arrangements have four basic elements Source of the operating liquid from the water main or reservoir Regulating device to c...

Page 7: ...ork under suspended loads To find out the weight of the machine refer to the chapter Technical Data 30 or the name plate NP Use appropriate slings 1 2 Description 1 DOLPHIN LM or LT without motor bare shaft pump 2 DOLPHIN LM or LT with motor Check the machine for transport damage If the machine is secured to a base plate Remove the machine from the base plate ...

Page 8: ...guard if not supplied as a bare shaft machine Rotate the machine shaft by hand weekly to prevent bearing indentation Leave the shaft at approximately 90 degrees to the original position using a temporary mark on the shaft to assist Replace the coupling guard taking care to align correctly and ensure that all fasteners are re placed and fully tightened 4 3 Long Term Over 6 Months If the machine is ...

Page 9: ...ocation is protected from weather and lightning Make sure that the installation space or location is vented such that sufficient cooling of the ma chine is provided Make sure that cooling air inlets and outlets of the motor fan are not covered or obstructed and that the cooling air flow is not affected adversely in any other way Make sure that enough space remains for maintenance work Make sure th...

Page 10: ...ticles Install a suitable inlet screen smaller than 0 1 mm mesh size upstream of the machine Connection size s DN40 PN10 for LM 0100 0270 A and LT 0130 0220 A DN50 PN10 for LM 0530 A and LT 0320 0510 A DN65 PN10 for LM 0800 A and LT 0630 0750 A 5 2 2 Discharge Connection NOTICE Discharge gas flow obstructed Risk of damage to the machine Make sure that the discharged gas will flow without obstructi...

Page 11: ... OPL OPD Description CPC Cavitation protection connection GVC Vacuum gauge or relief valve connec tion OPD Operating liquid drain OPI Operating liquid inlet OPL Operating liquid level plug OPI2 required for LM 0270 A LM 0530 A and LM 0800 A only Connection size Machine type OPI1 OPI2 OPD OPL CPC GVC LM 0100 0180 A Rc 1 2 N A Rc 1 8 Rc 1 4 N A Rc 1 4 LM 0270 A Rc 1 2 Rc 1 2 Rc 1 8 Rc 1 4 N A Rc 1 4...

Page 12: ...Continuous flow liquid system does not recover the operating liquid which flows out with the dis charge gases 5 2 3 2 Partial Recovery Open Circuit 1 2 4 3 Description 1 Process inlet IN 2 Gas discharge OUT 3 Operating liquid inlet OPI 4 50 of operating liquid liquid recov ered Partial recirculation liquid system reduces the consumption of fresh liquid by recovering and recircu lating 50 of the op...

Page 13: ...or when suction pressure varies during cycling operations a circulating pump is manda tory 5 3 Operating Liquid Settings The condition of both the operating liquid and the conveyed media depend on the physical condi tions pressure and temperature At a very low pressures and sufficiently high temperatures the operating liquid can locally transfer into the vapor phase creating bubbles within the ope...

Page 14: ...steel material offer higher levels of corrosion resis tance and are recommended for operation outside of the above limits or where the applica tion is known to corrode cast iron 5 4 Fitting the Coupling WARNING Unprotected coupling Risk of severe injury Make sure that the coupling is protected by a cover or a guard In case of a machine supplied without a motor Fit a suitable coupling that matches ...

Page 15: ...lt heads on the non drive end bearing cap do not sit flush with the outer surface This is normal for this machine type and the bolt heads are covered with plastic caps CAUTION Bolt heads with plastic caps Risk of damage to the machine Do not adjust these bolts setting otherwise the shaft will move and the machine could seize ...

Page 16: ...ine will not be affected by electric or electro magnetic dis turbance from the mains if necessary seek advice from Busch Make sure that the EMC of the machine is compliant with the requirements of your supply net work system if necessary provide further interference suppression EMC of the machine see EU Declaration of Conformity 35 or UK Declaration of Conformity 36 6 1 Machine delivered without C...

Page 17: ...e motor Connect the protective earth conductor Electrically connect the motor 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 con nection instructions diagrams 6 2 Machine delivered with a Variable Speed Drive Option If the machine is equipped with a power connector install a residual current protect...

Page 18: ...direction NOTICE Incorrect direction of rotation Risk of damage to the vacuum system Operating the vacuum system with the rotation in the wrong direction can result in the operating liquid flowing back to the vacuum system Prior to start up check for correct direction of rotation The intended rotation direction of the motor is defined by the illustration below Watch the fan wheel of the motor and ...

Page 19: ...ltage Double star connection multi voltage motor with 9 pins low voltage Star connection multi voltage motor with 9 pins high 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 middle voltage 4 4 4 ...

Page 20: ...ons see Installation Conditions 9 are met Before operating the machine Make sure that the operating liquid level is at the machine shaft center Check the operation of all automatic valves before start up Switch on the machine Make sure that the maximum permissible number of starts does not exceed 12 starts per hour Those starts should be spread within the hour After a few seconds of operation Turn...

Page 21: ...l directions Instead the inflowing liquid hits the surface with high speed This causes erosion which can destroy the machine rapidly The formation of bubbles also deteriorates the pump performance Cavitation is clearly audible by its crackling noise The working pressure of the vacuum pump shall therefore be sufficiently above the vapor pressure of the operating liquid In particular the pressure co...

Page 22: ...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 touching the machine let the machine cool down first Shut down the machine and lock against inadvertent start up Turn off the operating liquid system Vent the connected lines to atmospheric pressure ...

Page 23: ... Monthly Check for abnormal noise see Troubleshooting 28 Check for excessive vibration see Operating Conditions Check the operating liquid temperature see Operating Liq uid Connection 11 Check the machine for liquid leaks in case of leaks have the machine repaired contact Busch Every 1000 operating hours Regrease the bearings add 15g of lithium based grease NLGI class 2 to each bearing Every year ...

Page 24: ...iciency Any dismantling of the machine that goes beyond anything that is described in this manual should be done by Busch authorized technicians 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 Dec laration of Contamination Busch will only accep...

Page 25: ... to any action requiring touching the machine let the machine cool down first Shut down the machine and lock against inadvertent start up Disconnect the power supply Vent the connected lines to atmospheric pressure Disconnect all connections If the machine is going to be stored See Storage 10 1 Dismantling and Disposal Separate special waste from the machine Dispose of special waste in compliance ...

Page 26: ... for chemical applications 2x bearing ball 2x o ring PTFE Viton 2x mechanical seal Chemraz 1x locknut M30 0993 700 058 Service kit for LM 0530 A Intended for standard applications 2x bearing ball 2x o ring Viton 1x flat seal washer nitrile 2x mechanical seal 1x locknut M40 0993 700 078 Service kit for LT 0320 A LT 0430 A LT 0510 A Intended for standard applications 2x bearing ball 2x o ring Viton ...

Page 27: ...r with adaptor sleeve 2x o ring Viton 1x flat seal washer nitrile 2x mechanical seal 1x locknut M45 3x oil seal 0993 700 061 Service kit for LM 0800 A LT 0630 A LT 0750 A Intended for chemical applications 1x bearing spherical roller 1x bearing spherical roller with adaptor sleeve 2x o ring PTFE Viton 1x flat seal washer PTFE 2x mechanical seal Chemraz 1x locknut M45 3x oil seal 0993 700 062 If ot...

Page 28: ...tive Replace the motor The machine does not reach the usual pressure on the suc tion connection Suction or discharge lines too long or section diameter too small Use larger diameter or shorter lines Seek advice from your local Busch representative The operating liquid is too warm or insufficient operating liquid the characteristic curves are based on 15 C warm water as operating liquid with higher...

Page 29: ... of steam bubbles in the operating liquid Consult the chapter Prevent ing Cavitation 21 Adjust cooling liquid flow rate to reduce the tempera ture of the operation liquid Worn coupling element Check the coupling and re pair it if necessary The machine runs too hot Insufficient air ventilation Make sure that the cooling of the machine is not imped ed by dust dirt Clean the fan cowling the fan the v...

Page 30: ...0 1750 34 60 Hz Noise level EN ISO 2151 50Hz 60Hz dB A 70 71 Vibration velocity unfiltered RMS mm s in s 4 0 0 16 Max allowable gas inlet tempera ture C Gas dry 120 Gas saturated 100 Ambient temperature range C 5 40 Relative humidity at 30 C 90 Ambient pressure Atmospheric pressure Operating liquid requirements once through operation only m3 h 130 mbar 0 8 400 mbar 0 7 800 mbar 0 4 130 mbar 0 8 40...

Page 31: ...750 34 60 Hz Noise level EN ISO 2151 50Hz 60Hz dB A 72 73 75 76 Vibration velocity unfiltered RMS mm s in s 4 0 0 16 Max allowable gas inlet tempera ture C Gas dry 120 Gas saturated 100 Ambient temperature range C 5 40 Relative humidity at 30 C 90 Ambient pressure Atmospheric pressure Operating liquid requirements once through operation only m3 h 130 mbar 2 8 400 mbar 2 0 800 mbar 1 6 130 mbar 4 0...

Page 32: ...60 Hz Noise level EN ISO 2151 50Hz 60Hz dB A 70 71 Vibration velocity unfiltered RMS mm s in s 4 0 0 16 Max allowable gas inlet tempera ture C Gas dry 120 Gas saturated 100 Ambient temperature range C 5 40 Relative humidity at 30 C 90 Ambient pressure Atmospheric pressure Operating liquid requirements once through operation only m3 h 33 mbar 1 0 400 mbar 0 8 800 mbar 0 7 33 mbar 1 0 400 mbar 0 8 8...

Page 33: ...60 Hz Noise level EN ISO 2151 50Hz 60Hz dB A 72 73 Vibration velocity unfiltered RMS mm s in s 4 0 0 16 Max allowable gas inlet tempera ture C Gas dry 120 Gas saturated 100 Ambient temperature range C 5 40 Relative humidity at 30 C 90 Ambient pressure Atmospheric pressure Operating liquid requirements once through operation only m3 h 33 mbar 3 0 400 mbar 1 3 800 mbar 0 8 33 mbar 3 0 400 mbar 1 6 8...

Page 34: ...750 34 60 Hz Noise level EN ISO 2151 50Hz 60Hz dB A 75 76 Vibration velocity unfiltered RMS mm s in s 4 0 0 16 Max allowable gas inlet tempera ture C Gas dry 120 Gas saturated 100 Ambient temperature range C 5 40 Relative humidity at 30 C 90 Ambient pressure Atmospheric pressure Operating liquid requirements once through operation only m3 h 33 mbar 3 0 400 mbar 1 8 800 mbar 1 4 33 mbar 3 0 400 mba...

Page 35: ...agnetic Compatibility EMS 2014 30 EU RoHS 2011 65 EU Restriction of the use of certain hazardous substances in electrical and electronic equipment incl all related applicable amend ments and comply ies with the following designated standards that have been used to fulfill those provisions Standards Title of the Standard EN ISO 12100 2010 Safety of machinery Basic concepts general principles of des...

Page 36: ...ery Safety Regulations 2008 Electromagnetic Compatibility Regulations 2016 Restriction of the use of certain hazardous substances in Electrical and Electronic Equipment Regulations 2021 and comply ies with the following designated standards that have been used to fulfill those provisions Standards Title of the Standard EN ISO 12100 2010 Safety of machinery Basic concepts general principles of desi...

Page 37: ...Instruction Manual DOLPHIN LM 0100 0800 A LT 0130 0750 A_EN_en 37 40 Notes ...

Page 38: ...38 40 Instruction Manual DOLPHIN LM 0100 0800 A LT 0130 0750 A_EN_en ...

Page 39: ...Instruction Manual DOLPHIN LM 0100 0800 A LT 0130 0750 A_EN_en 39 40 ...

Page 40: ...resence 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 0870206545 0003_en US ...

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