MZ 2 NT MZ 2D NT
Contents
1. 696862 Service kit for MZ 2D NT aerea 696863 Service kit for ME 4S NT MZ 25 ME 85 NT 2x MD 4S NT 2x 696868 Service kit for ME 4R NT 2 29 e SE 696859 Service kit for MD 4CRL 696870 Diaphragm key width 66 mm 636554 Tools required metric Phillips screwdriver size 2 MZ 2D NT Open end wrench width 17 20 ME 4 R NT MZ 2 D S NT MD 4CRL NT 5mm wide Allen key Diaphragm key width 66 mm page 43 of 59 Cleaning and inspecting the pump heads ME 4R NT Use an open end wrench width 17 to re move the screw in fitting from the pump head steady fitting with a second open end wrench width 20 and remove along with the connecting hose ME 4R NT Use an open end wrench width 17 to un screw the hollow bolt stainless steel at the adjustment device together with the mano meter steady fitting with a second open end wrench width 20 Dismount the vacuum pressure adjustment device along with the manometer ME 4 S NT MZ 2 D S NT Use an open end wrench width 17 to re move the screw in fitting and the connecting tube from the pump head In case steady with a second open end wrench width 20 MD 4CRL NT Use an open end wrench width 17 to re move the stainless steel screw in fitting and the connecting tube from th2. 636002 VACUU LAN Mini Network with three VCL 01 modules 2614455 Vacuum adjustment device with manometer 696840 Check valve flapper valve 24 000 639683 Simultaneous operation of two systems at different pressure levels stainless steel FFKM leak rate 1 6 10 3 Torr cfm for pressure differences 375 Torr 500 mbar For additional accessories such as vacuum valves small flange components vac uum gauges or vacuum controllers refer to www vacuubrand com Troubleshooting Fault page 39 of 59 Possible cause Remedy Pump does not start or stops im mediately Electrical power cord not plugged in electri cal supply failure Device fuse blown Overpressure in outlet line or in the system at outlet side Motor overloaded Plug in power cord Check fuse Identify cause of failure Replace device fuse Remove blockage in line open valve or reduce overpressure in the sys tem pressure adjustment device ME 4R NT Allow motor to cool down identify and eliminate cause of failure Manual reset is necessary Switch off pump or unplug Pump does not achieve its ultimate vacuum or usual pumping speed Centring ring at small flange connection not correctly positioned or leak in the pipeline or vacuum system Vacuum adjustment de vice open ME 4R NT Long nar
3. 31 Installing a pump in a vacuum system 31 DUNG ODT ANON CT T 35 amp e T RR RR ENEE EANN 37 E 38 Troubleshooting 4 5 39 Replacing diaphragms and valves 41 Cleaning and inspecting the pump 43 Replacing the 45 Assembling the pump headS 48 Assembling fittings NT MZ 2 D S NT MD 4CRL NT 49 Replacing the 51 Notes on return to the factory 52 55 Health and safety clearance form 56 EC Declaration of Conformity of the Machinery 57 4 59 Safety information Important information This manual is an integral part of the equipment de scribed therein It describes the safe and proper use of the vacuum pump Keep this manual complete and accessible to person nel at all times Make operating personnel aware of dangers arising from the pump and the pumped substances Read this manual carefully before installing or oper ating the equipment Observe the instructions con tained in this manual VACUUBRAND disclaims any liability for inappro priate use of these pumps and for damage result
4. MZ2NT MZ 25 MZ2D NT MD 4631 NT Housing cover stainless steel Head cover ETFE carbon fiber reinforced Diaphragm clamping disc ETFE carbon fiber reinforced Diaphragm PTFE Valves FFKM 24 59 Components Wetted materials Connection tube PTFE Fittings stainless steel Seal rings FPM Vacuum pressure adjustment device ME 4R NT O ring NBR Valve block aluminum alloy Seal ring at manometer copper Hollow bolt dispensing screw stainless steel Overpressure safety relief device FPM We reserve the right for technical modification without prior notice Abbreviations ETFE Ethylene Tetrafluoroethylene FFKM Perfluoro elastomer FPM Fluoroelastomer NBR Nitrile butadiene rubber PA Polyamide PBT Polybutylene terephthalate PE Polyethylene PTFE Polytetrafluoroethylene PVC Polyvinyl chloride page 25 of 59 Pump parts Position Component Inlet Outlet ON OFF switch Power connection Handle Pump rating plate Fan Inlet with vacuum adjustment device Slab Outlet with pressure adjustment device Dispensing screw Overpressure manometer Vacuometer Overpressure safety relief device Voltage selection switch We reserve the right for technical modification without prior notice Power connection all pump designs page 26 of 5
5. On pumps with a dual voltage motor check that the volt age selection switch is set correctly Do not change the setting of the voltage selection switch while the pump is connected to AC power Unplug the pump before setting the voltage selection switch Note If the pump is switched on with wrong voltage selection the motor may be da maged Keep a minimum distance of 8 in 20 cm between the cooling fan and surrounding items e g housing walls etc Check fan regularly for dust dirt Clean fan guard grill if necessary to avoid a reduction of ventilation DANGER 9 59 Use only hoses at the inlet and outlet of the pump with an inner diameter at least as large as the diameter of the pump s tubing to avoid overpressure at the outlet and reduction of pumping speed at the inlet Connect hoses gas tight at inlet and outlet of the pump Allow the equipment to equilibrate to ambient temperature you bring it from cold environment into a room prior to operation Notice if there is water condensation on cold surfaces Ensure that no foreign objects can be drawn into the pump Comply with all applicable and relevant safety require ments regulations and guidelines Implement the re quired actions and adopt suitable safety measures Ambient conditions t Do not use this product in an area where it can fall or be pulled into water or other liquids Do not reach for this product if it has fallen int
6. Adopt suitable measures to prevent the release of dan gerous toxic explosive corrosive noxious or polluting fluids vapors and gases To prevent any emission of such substances from the pump outlet install an ap propriate collecting and disposal system and take pro tective action for pump and environment t Never operate this pump if it has a damaged cord or plug If the pump is not working properly has been dropped or has fallen into water contact your pump service provider t Prevent any part of the human body from coming into contact with vacuum t Make sure that the exhaust pipeline cannot become blocked t You must take suitable precautions to prevent any for mation of explosive mixtures in the pump chamber or at the outlet of the pump In case e g of a diaphragm failure mechanically generated sparks hot surfaces or 12 59 static electricity may ignite these mixtures Use inert gas for venting if necessary t Drain appropriately or otherwise remove any potentially explosive mixtures at the outlet of the pump or dilute them with inert gas to non explosive concentrations Comply with applicable regulations when disposing of chemicals Take into consideration that chemicals may be contaminated Take adequate precautions to pro tect people from the effects of dangerous substances chemicals thermal decomposition products of fluo roelastomers Use appropriate protective clothing and safety
7. Dimensions L x W x H approx 12 8 x 9 4 x 7 8 198 325 x 239 x 198 Weight approx 25 1 11 4 36 2 16 4 20 59 cfm m3 h Maximum pumping speed 50 60 Hz ISO 21360 MD 45 MD 4 2 2 2 5 3 8 4 3 Torr Ultimate vacuum absolute mbar 0 75 1 0 15 2 Maximum permissible inlet pressure absolute psi bar 16 1 1 Maximum permissible outlet pressure absolute psi bar 16 1 1 Maximum pressure difference between inlet and outlet psi bar 16 1 1 Rated motor power hp kW 0 34 0 25 Maximum permissible range of supply voltage 10 Attention Observe specifications of rating plate Dual voltage motor 100 115 50 60 Hz 120V 60 Hz 230 V 50 60 Hz 100 115 V 50 60 Hz 120 V 60 Hz 200 230 V 50 60 Hz Maximum rated current at 100 115 V 50 60 Hz 120 V 60 Hz 200 230 V 50 60 Hz 230 V 50 60 Hz Inlet hose nozzle for tubing ED 3 8 hose nozzle DN 10 mm small flange KF 16 Outlet hose nozzle for tubing I D 3 8 hose nozzle DN 10 mm silencer G1 4 Dimensions L x W x H approx 12 8 x 9 4 x 7 8 325 x 239 x 198 Weight approx 36 2 16 4 Maximum pumping speed 50 60 Hz ISO 21360 page 21 of 59 cfm m3 h ME 4R NT Ultimate vacuum absolute Torr mbar Maximum permissible inl
8. If neces sary you must install appropriate filters You must ensure their suitability concerning gas flow chemical resistance and resistance to clogging prior to use Make sure ventilation is adequate especially if the pump is installed in an enclosure or if the ambient temperature is elevated Provide external ventilation if necessary Keep a distance of minimum 8 in 20 cm between fan and ad jacent equipment or casework A power failure may cause accidental ventilation of the pump If this constitutes a potential source of danger take appropriate safety measures page 32 of 59 Pump with dual voltage motor Check that the voltage selection switch at the terminal box is positioned correctly Check every time before starting the pump Note If the pump is switched on with wrong voltage selec tion the motor may be damaged Change the selection at the voltage selection switch only if the pump is unplugged from the power source Voltage selection switch 1 Disconnect the electrical power cord 2 Use a screw driver to adjust the voltage selec tion switch at the terminal box of the pump to the supply voltage 115 corresponds to 90 126 V and 230 corresponds to 180 253 V N voltage selection switch Use connecting hoses with large diameter and keep them as short as possible to avoid flow losses Locate the pump as closely as possible to the application Always install outlet tubing descending from the pump t
9. necessity for these measures that protect our employees and ensure that your pump is protected in shipment page 54 of 59 Scrapping and waste disposal Dispose of the equipment and any components removed from it safely in accordance with all local and national safety and environmental requirements Particular care must be taken with components and waste oil which have been contaminated with dangerous substances from your processes Do not incinerate fluoroelastomer seals and O rings You may authorize us to dispose of the equipment at your expense page 55 of 59 VACUUBRAND shall be liable for insuring that this prod uct including any agreed installation has been free of de fects at the time of the transfer of risk VACUUBRAND shall not be liable for the consequences of improper handling use servicing or operation of this product or the consequences of normal wear and tear of wearing parts such as diaphragms seals valves vanes condensers oil and the breakage of glass or ceramic parts for the consequences of chemical electrochemical or electrical influences or the failure to follow the instruc tions in this manual Claims for defects against VACUUBRAND shall be limited to one year from delivery The same shall apply to claims for damages irrespective of legal grounds For further information on general terms and conditions refer to www vacuubrand com page 56 of 59 Health and safety clearance form Decl
10. directly liable for injuries or dam the product is free of dangerous substances ages suffered by third parties particularly VACUUBRAND em the oil or residues of pumped media have been drained ployees occupied with handling repairing the product i 4 2 for dangerous goods Signature si We assure for the returned product that all substances toxic corrosive biologically active explo Name PAT sive radioactive or dangerous any way which have been pumped or been in contact with the product are listed in 3 1 Job title print that the information is complete and that we have not with held any information Company s seal rere ent tte gena the product in accordance with regulations has been Qcleaned Q decontaminated U sterilized Alfred Zippe Str 4 97877 Wertheim VACUUBRAND GMBH CO KG Tel 49 9342 808 0 Fax 49 9342 808 450 Technology for Vacuum Systems E Mail info vacuubrand de 2010 VACUUBRAND GMBH CO KG Printed in Germany Web www vacuubrand com page 57 of 59 Ce EG Konformitatserklarung f r Maschinen EC Declaration of Conformity of the Machinery D claration CE de conformit des machines Hersteller Manufacturer Fabricant VACUUBRAND GMBH CO KG Alfred Zippe Str 4 97877 Wertheim Germany Hiermit der Hersteller dass die Maschine konform ist mit den Bestimmung
11. goggles t Use only original manufacturer s spare parts and accessories Otherwise the safety and performance of the equipment as well as the electromagnetic compat ibility of the equipment might be reduced The CE mark or the cT Vus mark may be voided if not using original manufacturer s spare parts CAUTION Ensure that no parts of your clothing hair or fingers can be caught or drawn in at the inlet of the pump Never insert fingers or drop any other object into the inlet or outlet Pay attention to the safety symbol hot surfaces on the equipment Hot parts may cause burns if touched Adopt suitable measures to prevent any danger arising from hot surfaces or electric sparks Ensure that hot surfaces of the pump do not cause burns Provide a suitable contact guard if necessary Failure of the pump e g due to power interruption failure of connected components or of parts of the sup ply or a change of parameters must not be allowed to lead to a dangerous situation under any circumstances In case of a diaphragm failure or in case of a leak in the manifold pumped substances might be released into the environment or into the pump housing or motor Especially comply with notes on use and operation and page 13 of 59 maintenance The residual leak rate of the equipment might render possible an exchange of gas albeit extremely slight between the environment and the vacuum system Adopt suitable measures to pre
12. naphtha or petroleum ether Do not inhale vapors Position new diaphragm G between dia phragm clamping disc with square head screw E and diaphragm support disc H t Note not ME 45 NT MZ 25 ME 8S NT ME 4R NT MD 45 MD 4CRL NT This is a double diaphragm consisting of two single diaphragms Put the two diaphragms together with the printed sides outwards t Note only 4S NT MZ 2S NT ME 85 4RNT MD 45 NT MD ACRL NT Position diaphragm with pale side towards diaphragm clamping disc facing pump chamber t Make sure that the square head screw of the diaphragm clamping disc is correctly seated in the guide hole of the diaphragm support disc Lift the diaphragm at the side Place the diaphragm carefully together with diaphragm clamping disc and diaphragm support disc in the dia phragm key Avoid damage of the diaphragm Do not excessively bend or crease the diaphragm t Assemble the original number of washers 1 between diaphragm support disc H and connecting rod J Screw diaphragm clamping disc E dia phragm G diaphragm support disc H and washers to connecting rod J Optimum torque for the diaphragm support disc 4 4 6 6 Nm it is recommended to use a torque wrench Attach Allen key to diaphragm key hexagonal bolt 6 mm wide Note Never use the diaphragm key with any additional tools like tongs or Allen keys without appropriate torq
13. the two dia Lg phragms together with the printed sides out wards Apply a drop of adhesive OmniFit 50M or V Loctite 243 to the lower side of the screw head and to the thread Screw diaphragm clamping disc E diaphragm G diaphragm support disc H and washers 1 if applica ble to connecting rod J OmniFit and Loctite are registered trade marks of Henkel Technologies Replacing the diaphragms of pumps ME 2 NT ME 4 R S NT MZ 2 S NT ME 8 NT MD 4 S CRL NT MV 2 NT t Check diaphragm G for damage and re place if necessary Lift diaphragm carefully sidewise t Never use a pointed or sharp edged tool to lift the diaphragm Use the diaphragm key to grip the diaphragm support disc H below the diaphragm Unscrew diaphragm support disc H with diaphragm G and dia phragm clamping disc E Check for washers 1 between the diaphragm support disc and the connecting rod J Do not mix the washers from the different pump heads since these are set at the factory to ensure proper pump per formance Make sure that the original number is reassembled at the individual pump head 47 59 t Too few washers The pump will not attain vacuum specification Too many washers Diaphragm clamping disc will hit head cover causing noisy operation and possibly causing the pump to seize up f the old diaphragm is difficult to separate from the diaphragm support disc immerse assembly in
14. 0 230 V 50 60 Hz Maximum rated current at 100 115 V 50 60 Hz 120 V 60 Hz 200 230 V 50 60 Hz 230 V 50 60 Hz 3 4 1 8 1 8 Inlet hose nozzle for tubing 1 0 3 8 hose nozzle DN 10 mm Outlet silencer 51 4 Dimensions L x W x H approx 9 6 x 9 4 x 7 8 243 x 239 x 198 Weight approx 24 2 11 0 19 59 cfm Maximum pumping speed m3 h 50 60 Hz ISO 21360 MZ 2D NT ME 8S NT 4 3 4 8 4 7 3 8 1 T 2 1 4 6 7 8 3 7 21 Torr Ultimate vacuum absolute mbar 52 70 52 70 psi Maximum permissible inlet bar pressure absolute 16 1 1 psi Maximum permissible outlet bar pressure absolute 29 2 psi Maximum pressure difference bar between inlet and outlet 29 2 Rated motor power hp KW 0 24 0 18 0 34 0 25 Maximum permissible range of supply voltage 10 Attention Observe specifications of rating plate Dual voltage motor 100 115 V 100 V 50 60 50 60 Hz 120V 60 Hz 120 V 60 230 V 50 60 Hz 100 115 V 50 60 Hz 120 V 60 Hz 200 230 V 50 60 Hz Maximum rated current at 100 V 50 60 Hz 120 V 60 Hz 230 V 50 60 Hz 100 115 V 50 60 Hz 120 60 Hz 200 230 V 50 60 Hz 1 8 3 4 1 8 Inlet small flange hose o tubing KF 16 hose nozzle DN 10 mm Outlet silencer G1 4 2x silencer G1 4
15. 7877 Wertheim Ger many Wertheim 06 07 2011 Dr F Gitmans Dr J Dirscherl Managing director G rant Technical Director Directeur technique VACUUBRAND GMBH CO KG Alfred Zippe Str 4 97877 Wertheim vacuubrand Tel 49 9342 808 0 Fax 49 9342 808 450 E Mail info vacuubrand de Web www vacuubrand com page 58 of 59 Certifi cate T VRheinland License Holder Manufacturing Plant VACUUBRAND GMBH Co KG VACUUBRAND GMBH Co KG Alfred Zippe Str 4 Alfred Zippe Str 4 97877 Wertheim 97877 Wertheim Germany Germany Test report no USA DS 30882017 001 Client Reference M von Przychowski Tested to UL 61010A 1 2002 R12 02 CAN CSA C22 2 No 1010 1 92 A2 97 Certified Product Diaphragm Vacuum Pump for Laboratory Use License Fee Units Model Designation Mw xyyy NT yy 2 PC 101 NT PC 201 NT 7 w E Z D V 2 4 6 8 y A Z blank Z AK EK 2AK AK EK AK EK TE AK EK Peltronik SYNCHRO EK AK M D IK EK blank AC 100V 50 60Hz 2 AC 120V 60Hz AC 230V 50 60Hz AC 100 115 50 60Hz 120V 60Hz AC 100 115 200 230V 50 60Hz AC 120V 60Hz Rated Current 2 4A 3 3A 4 1 8A 5 6 4A 7 52 3 70A SETAS 8 3 47 V 8A SEMA Protection Class I Appendix 1 1 2 Licensed Test mark Signature Date of Issue day mo yr Mod 08 09 2008 Dipl Ing M Glagla QA Certification Officer This certificate is only valid for pumps with the respec tive m
16. 9 ME 4 NT ME 4S NT fig ME 4 NT e A e a TA page 27 of 59 ME 4R NT MZ 2 NT MZ 28 NT fig MZ 2 NT Original instructions page 28 of 59 MZ 2D NT ME8NT 8S NT w 1 E page 29 of 59 E MD4NT MV2NT fig MV 2 NT page 30 of 59 MD 4CRL NT 25 31 59 Use and operation Installing a pump in a vacuum system AWARNING t Connect a gas tight exhaust line at the pump outlet if necessary Always vent exhaust gases appropriately e g into a fume hood If dangerous or polluting fluids could be released at the outlet install an appropriate system to catch and dispose of those fluids t Never block the gas outlet The exhaust line must al ways be free of obstructions no back pressure to en sure an unimpeded discharge of gas The cross sec tion of the outlet tubing must be at least the size of the pump s exhaust connection Reduce the transmission of vibration Prevent mechan ical load due to rigid pipelines Insert elastic hoses or flexible elements as couplings between the pump and rigid pipes Note Flexible elements will compress or flatten when evacuated if not designed for use under vacuum Hose connections at the pump inlet must always be gas tight Particles and dust must not be aspirated
17. List of substances in contact with the equipment or reaction products 3 1 Chemical substance name chemical symbol If the paint is damaged we wish a repaint or a re placement of parts for reason of appearance at our expense see Notes on return to the factory pg 52 yes We declare that the following measures where plicable have been taken The oil has been drained from the product Important 3 2 Important information and precautions Dispose of according to national regulations e g danger classification The interior of the product has been cleaned All inlet and outlet ports of the product have been sealed The product has been properly packed and marked as appropriate If necessary please order original packaging costs will be charged The carrier has been informed about the hazardous nature of the goods if applicable By our signature below we acknowledge that we accept li ability for any damage caused by providing incomplete or in 4 Declaration please mark as applicable correct information and improper packaging and that we shall indemnify VACUUBRAND from any claims as regards dam LL 4 1 for non dangerous goods ages from third parties We assure for the returned product that neither toxic corrosive biologically active explosive radio We are aware that as expressed in 8 823 BGB Public Law active nor contamination dangerous in any way has occurred Code of Germany we are
18. Technology for Vacuum Systems Instructions for use ME 2 ME 4 NT ME 45 NT MZ 2 NT MZ 2D NT MZ 28 NT ME 8 NT ME8S MD 4 MD 45 NT 2 ME 4R MD 4631 NT Diaphragm pumps 2 59 Dear customer Your VACUUBRAND diaphragm pumps are designed to provide you with many years of trouble free service with optimal performance Our many years of practical experience allow us to provide a wealth of application and safety information Please read these instructions for use before the initial operation of your pump VACUUBRAND diaphragm pumps combine our many years of experi ence in design construction and practical operation with the latest de velopments in material and manufacturing technology Our quality maxim is the zero fault principle Every diaphragm pump before leaving our factory is tested intensively including an endurance run of 18 hours Any faults even those which oc cur rarely are identified and can be eliminated immediately After completion of the endurance run every pump is tested and must achieve specifications before shipment We are committed to providing our customers only pumps that meet this high quality standard While our pumps cannot eliminate all of your work we design manufac ture and test them to ensure that they will be an effective and trouble free tool to assist you in that work Yours VACUUBRAND GMBH CO KG After sales s
19. aration concerning safety potential hazards and safe disposal of waste e g used oil Safety and health of our staff laws and regulations regarding the handling of dangerous goods occupational health and safety regulations safety at work laws and regulations regarding safe disposal of waste e g waste oil require that for all pumps and other products this form must be sent to our office fully completed and signed before any equipment is dispatched to our prem ises Products will not be accepted for any procedure and handling and repair DKD calibration will not start before we have received this declaration a Fax or post a completed copy of this form to us in advance The declaration must arrive before the equipment Enclose a second completed copy with the product If the product is contaminated you must notify the carrier Comply with national and international transport regulations b Inevitably the repair process will be delayed considerably if this information is missing or this procedure is not obeyed We appreciate your understanding for these measures which are intended to protect our employees and ask you that you assist us in expediting the repair procedure c Make sure that you know all about the substances which have been in contact with the equipment and that all ques tions have been answered correctly and in detail 5 Method of transport carrier 1 Product Model 3
20. are of safety and risks t Do not use the pump to generate pressure A DANGER page 7 of 59 The pumps are designed for ambient temperatures dur ing operation between 50 F and 104 F 10 C and 40 C Check the maximum temperatures if installing the pump in a cabinet or a housing Make sure ventila tion is adequate to maintain recommended operating tem perature Install an external automatic ventilation system if necessary If pumping hot process gases make sure that the maximum permitted gas inlet temperature is not exceeded The maximum permitted gas inlet temperature depends on several parameters like inlet pressure and ambient temperature see Technical data pg 17 Do not aspirate particles and dust Do not pump liquids Ensure that the pump is chemically resistant to the pumped substances prior to operation Setting up and installing the equipment Equipment must be connected only to a suitable elec trical supply and a suitable ground point As such the plug must be plugged into an outlet that is properly grounded Failure to connect the motor to ground may result in deadly electrical shock The supply cable may be fitted with a molded Euro pean IEC plug or a plug suitable for your local electrical supply The cable contains wires color coded as fol lows green or green and yellow ground blue or white neutral brown or black hot t Due to the high compression ratio the pump may gen erate overpress
21. ark Licensed Test mark on the pump rating plate page 59 of 59 Disclaimer Our technical literature is only intended to inform our custom er The validity for specific applications of general empirical values and results obtained under test conditions depends on a number of factors beyond our control It is therefore strictly the users responsibility to very carefully check the validity of application to their specific requirements No claims arising from the information provided in this literature will con sequently be entertained Alfred Zippe Str 4 97877 Wertheim Tel 49 9342 808 0 Fax 49 9342 808 450 E Mail info vacuubrand de Web www vacuubrand com VACUUBRAND GMBH CO KG Technology for Vacuum Systems 2011 VACUUBRAND GMBH CO KG Printed in Germany Manual no 999155 07 06 2011
22. ations and regulations regarding safe disposal of waste require that for all pumps and oth er products the Health and safety clearance form see pg 56 must be sent to our office fully completed and signed before any equipment is shipped to the authorized service center Fax or mail a completed copy of the health and safety clearance form to us in advance The declaration must ar rive before the equipment Enclose a second completed copy with the product If the equipment is contaminated you must notify the carrier No repair DKD calibration is possible unless the cor rectly completed form is returned Inevitably there will be a delay in processing the equipment if information is missing or if this procedure is not followed CAUTION If the product has come in contact with chemicals radioac tive substances or other substances dangerous to health or environment the product must be decontaminated pri or to sending it back to the service center Return the product to us disassembled and cleaned and accompanied by a certificate verifying decontami nation or Contact an industrial cleaning and decontamination service directly or Authorize us to send the product to an industrial clean ing facility at your expense To expedite repair and to reduce costs please enclose a detailed description of the problem and the product s op erating conditions with every product returned for repair NOTICE page 53 of 59 We
23. aximum ambient temperature 104 F 40 C Check the maximum temperatures if installing the pump in a cabinet or a housing Make sure ventilation is adequate especially if the ambient temperature is elevated If the pump is installed at an altitude of more than 3300 ft 1000 m above mean sea level check compatibility with applicable safety requirements especially IEC 60034 There is a risk of the motor overheating due to insufficient cooling Do not start the pump if the pressure difference between inlet and outlet ports exceeds max 16 0 psi 1 1 bar Attempts to start the pump at higher pressure difference may cause stalling and damage of the motor Check compatibility with the maximally permitted pres sure at outlet and the maximum pressure difference between inlet and outlet ports Operation with silencer at the outlet Operating the pump at a high inlet pressure or pumping dusty gases for a long time may cause clogging of the silencer Check the silencer regularly and replace if necessary or install a hose nozzle order no 639758 with sealing ring order no 639729 instead Prevent internal condensation transfer of liquids or dust The diaphragms and valves will be damaged if liquids are pumped in significant amounts Check the pump regularly for external soiling and depos page 36 of 59 its Clean the pump if necessary to avoid an increase of the pump s operating temperature In case of overload the motor is sh
24. e connecting tube may have some play page 49 of 59 Screw in the Allen head screws at the head covers diagonally at first slightly with a 5 mm wide Allen key then tighten ts Recommended torque 8 9 ftlb 12 Nm ME 4R NT Screw on adjustment device with valve block and hollow bolt t Align valve block before tightening the hol low bolt Tighten hollow bolt with open end wrench width 17 Steady fitting with a second open end wrench width 20 Use an open end wrench width 17 to as semble the screw in fittings with connection hose to the pump heads In case steady with an open end wrench width 20 page 50 of 59 MD 4CRL NT Note Always perform a leak test using appropriate leak detector e g helium leak detector after opening the pump Leak rate integral see Technical data pg 17 Replace diaphragms and valves of the opposite side of the pump in the same way If the pump does not achieve the ultimate vacuum Whenever the diaphragms and valves have been replaced a break in period of several hours is required before the pump achieves its ulti mate vacuum n case of an unusual noise switch off pump immediately and check clamping disc positions If the specified ultimate vacuum is not achieved and if this does not change after the break in period Check hose connectors at pump head for leaks If necessary recheck valve seats and diaphragms 51 59 Replaci
25. e housing cover In case steady with an open end wrench width 20 Position the pump on the side Support the pump appropriately i Service only one side of the pump at a time to avoid the mixing of parts 44 59 View of the disassembled pump head parts fig MZ 2 NT MZ 2D NT and MD 4 NT MZ 2 NT MZ 2D NT Pump head parts Housing cover O rings not ME 8 NT Valves Head cover Diaphragm clamping disc with square head screw MZ 2D NT with counter sunk head screw F Countersunk head screw G Diaphragm H Diaphragm support disc I Washer J Connecting rod K Housing L Connecting tube with O ring MD 4CRL NT with screw in fitting 45 59 Disassemble the housing cover to check the valves C Unscrew four 2 NT ME 4 R S NT MZ 2 D S NT or eight ME 8 NT MD 4 S CRL NT MV 2 NT Allen screws with a 5mm wide Allen key Remove the housing cover A together with head cover D valves C and O rings B if applicable t Never use a pointed or sharp edged tool to remove parts e g screwdriver We recom mend to use a rubber mallet or compressed air to be blown carefully into port Remove the head cover D carefully from the housing cover A Note position and align ment of valves C Remove the valves t Replace valves or O rings if necessary t Use petroleum ether or other industrial sol vent to remove deposits Do not
26. en der Richtlinie 2006 42 EG Hereby the manufacturer declares that the machinery is in conformity with the direc tive 2006 42 EC Par la pr sente le fabricant d clare que la machine est conforme directive 2006 42 CE Membranvakuumpumpe Diaphragm vacuum pump Pompe membrane Typ Type Type ME 2 NT ME 4 ME 4RNT ME 45 2 2 2 20 MZ 25 45 4 85 8 MD 4CRL NT MV2NT Artikelnummer Order number Num ro d article 730000 730002 731000 731001 731002 731100 731102 2613951 732000 732001 732002 732200 732201 732202 732100 734000 734001 734002 734100 736000 736001 736002 736105 736445 738000 738001 738002 Seriennummer Serial number Num ro de s rie Siehe Typenschild See rating plate Voir plaque signal tique Die Maschine ist konform mit weiteren Richtlinien The machinery is in conformity with other di rectives La machine est conforme d autres directives 2006 95 EG 2004 108 EG Angewandte harmonisierte Normen Harmonized standards applied Normes harmonis es utilis es DIN EN 12100 2 DIN EN 61010 1 DIN EN 1012 2 DIN EN 61326 1 Bevollmachtigter f r die Zusammenstellung der technischen Unterlagen Person authorised to compile the technical file Personne autoris e constituer le dossier technique Dr J Dirscherl VACUUBRAND GMBH CO KG Alfred Zippe Str 4 9
27. ervice Contact your local dealer or call 49 9342 808 193 Trademark index VACUU LAN US Reg No 3 704 401 VACUUsBUS VACUU CONTROLM chemistry HYBRID Peltronic TURBO MODE VARIO US Reg No 3 833 788 VARIO SP VACUUBRAND US Reg No 3 733 388 and also the shown company logos are trademarks of VACUUBRAND GMBH CO KG in Germany and or other countries page 3 of 59 Contents Safety 2 2 4 Important information 4 General information nennen nentes 6 ns 2 RUDE aa ET 6 Setting up and installing the 7 RIR E TR 9 Operating conditions 10 Safety during operation ess 11 Maintenance and 14 Additional safety information for ME 4R NT 15 Intended MU RPM ENDO 15 Setting up and installing the 19 TECNICAL eebe 17 General technical data valid for all pumps 17 Gas inlet 17 Wetted parts TETTE 23 Abbreviations TE 24 PURE Dai CEMETERY TRUM 25 Use and operation
28. ervice seminars which put special focus on the maintenance and repair of vacuum pumps For details see www vacuubrand com Wear parts have to be replaced regularly In case of normal wear the lifetime of the diaphragms and valves is gt 10000 operating hours Bearings have a typical durabil ity of 40000 h Motor capacitors have a typical durability in the range of 10000 to 40000 h depending strongly on operation conditions including ambient temperature hu midity or load Ensure that the pump cannot be operated acciden tally Never operate the pump if covers or other parts of the pump are disassembled Never operate a defective or damaged pump ts Switch off the pump Disconnect the electrical pow er cord and wait two minutes before starting mainte nance to allow the capacitors to discharge Note The pump may be contaminated with process chemicals which have been pumped during operation Ensure that the pump is completely decontaminated before maintenance commences Take adequate pre cautions to protect people from the effects of dangerous substances if contamination has occurred Use appro priate protective clothing safety goggles and protective gloves CAUTION Check every motor capacitor regularly by measuring 15 59 its capacity and estimating its time in operation Re place old capacitors early enough to prevent a failure in operation If an old motor capacitor fails the capac
29. et pressure absolute psi bar Maximum permissible outlet pressure absolute psi bar 58 4 Maximum permissible outlet pressure manometer reading psi bar 44 3 Maximum pressure difference between inlet and outlet psi bar 58 4 Rated motor power hp KW 0 24 0 18 Maximum permissible range of supply voltage 10 Attention Observe specifications of rating plate 100 115 50 60 Hz 120 V 60 Hz 290 V 50 60 Hz Maximum rated current at 100 115 V 50 60 Hz 120 60 Hz 230 V 50 60 Hz 3 4 1 8 Inlet hose nozzle for tubing 1 0 3 8 hose nozzle DN 10 mm Outlet hose nozzle for tubing 1 0 3 8 hose nozzle DN 10 mm silencer Dimensions L x W x H approx in mm x 11 4 9 4 9 6 290 239 243 8 8 3 x 9 6 198 211 243 Weight approx Ibs kg 25 4 11 5 22 5 10 2 Maximum pumping speed 50 60 Hz ISO 21360 page 22 of 59 MD 4CRL NT m3 h Ultimate vacuum absolute Torr mbar Maximum permissible inlet pressure absolute psi bar Maximum permissible outlet pressure absolute psi 16 bar 1 1 Maximum pressure difference between inlet and outlet psi 16 bar 1 1 Leak rate integral mbar l s 0 0016 0 001 Torr cfm Rated motor power hp kW 0 34 0 25 Maximum permissible ran
30. ge of supply voltage 10 Attention Observe specifications of rating plate 100 115 V 50 60 Hz 120 V 60 Hz 200 230 V 50 60 Hz Maximum rated current at 100 115 V 50 60 Hz 120 V 60 Hz 200 230 V 50 60 Hz 5 7 3 0 Inlet small flange KF 16 Outlet small flange KF 16 Dimensions L x W x H approx in 12 8x 9 4 x 7 8 mm 325 x 239 x 198 Weight approx Ibs kg 43 7 19 8 23 59 Wetted parts Components Wetted materials Housing cover aluminum allo AIMgSi0 5 or 5112 Head cover aluminum alloy 15112 Diaphragm clamping disc aluminum alloy 15112 Diaphragm clamping disc ME 4S NT MZ 2S NT ME 8S NT MD 4S NT Diaphragm ETFE glass fiber reinforced Diaphragm ME 4S NT MZ 2S NT ME 85 MD 45 NT Valves FPM Valves MZ 2D NT Valves ME 4S NT MZ 2S NT ME 8S NT MD 4S NT FPM PTFE Valves ME 4R NT O rings FPM Connection tube Small flange aluminum alloy AIMgSi0 5 stainless steel Hose nozzle Hose nozzle ME 4 NT ME 4S NT PBT stainless steel Silencer Fittings ME 4 ME 4R NT ME 45 NT MZ 2NT MZ 25 NT MZ 2D NT PA PE aluminium or aluminum alloy silicone aluminum anodized Tubing ME 4 R NT MZ 2 NT MZ 2D NT Tubing ME 45 NT MZ 25 NT PE Seal rings ME 4 NT ME 4R ME 4S NT
31. he vacuum sys tem before you start maintenance The valves and diaphragms as well as the motor itors are wear parts If the rated ultimate vacuum is no longer achieved or in case of increased noise level the pump interior the diaphragms and the valves must be cleaned and the diaphragms and valves must be checked for cracks or other damage All bearings are encapsulated and are filled with long life lubricant Under normal operating conditions the drive system is maintenance free In demanding circumstances it may be efficient to check and clean the pump heads on a regular basis In normal use the lifetime of the diaphragms and valves is more than 10 000 operating hours Prevent internal condensation transfer of liquids or dust The diaphragms and valves will be damaged if liquid is pumped in significant amount Carry out maintenance frequently if the pump is ex posed to corrosive media or in case of deposits Regular maintenance will improve the lifetime of the pump and also protect both users and the environ ment Service kit for ME 2 2 696877 Service kit for ME 4 NT MZ 2 NT 696860 Service kit for MD 4 NT MV 2 NT 696861 Service kit for ME 8 NT
32. ing from disregarding the instructions contained in this manual Do not modify the equipment without authorization This manual is only to be used and distributed complete ly and unchanged It is strictly the users responsibility to check carefully the validity of this manual with respect to his product Manual no 999155 07 06 2011 The following signal word panels and safety symbols are used throughout this manual This is the safety alert symbol It is used to alert you to po A tential personal injury hazards Obey all safety messages that follow this symbol to avoid possible injury and death page 5 of 59 DANGER n DANGER indicates hazardous situation which if not avoided will result in death or serious injury AWARNING t WARNING indicates a hazardous situation which if not avoided could result in death or serious injury CAUTION CAUTION indicates a hazardous situation which if not avoided could result in minor or moderate injury NOTICE is used to address practices not related to per sonal injury N Caution Hot surface Disconnect equipment from AC power SES Formatting used this manual Note The signal word panels in all sections of this manual always refer to all paragraphs of the same format plain text following each signal word panel NOTICE page 6 of 59 General information Remove all packing material from the packing box Re move the
33. inhale va pors ME 8 NT MD 4 NT MV 2 NT Underneath the pump there is a con necting tube L between the two housing covers The connecting tube is merely stuck into the housing covers and sealed with seal rings at the connecting tube s ends If the housing cover is removed the con necting tube becomes detached as well Replacing the diaphragm Replacing the diaphragms of a MZ 2D NT pump t Check the diaphragm for damage and replace if necessary Use a Phillips screwdriver to remove the countersunk head screw the centre of the diaphragm clamping disc E t Note The screw is secured with adhesive against loosening Clean the screw or use a new one cat no 639847 t f the old diaphragm is difficult to separate from the diaphragm support disc immerse assembly in naphtha or petroleum ether Do not inhale vapors 46 59 Check for washers between the diaphragm support disc the connecting rod J Do not mix the washers from the different pump heads since these are set at the factory to ensure proper pump performance Make sure that the original number is reassem bled at the individual pump head t few washers The pump will not attain vacuum specification Too many washers Diaphragm clamping disc will hit head cover caus ing noisy operation and possibly causing the pump to seize up t Note This is a double diaphragm consisting LA of two single diaphragms Put
34. itor may get hot It may even melt or emit a flame which could be dangerous for persons and equipment in the vicinity The capacitors have to be replaced by an electrician Ventthe pump before starting maintenance Isolate the pump and other components from the vacuum system Allow sufficient cooling of the pump Drain condensate if applicable e Ensure that maintenance is done only by suitably trained and supervised technicians Ensure that the maintenance technician is familiar with the safety pro cedures which relate to the products processed by the pumping system Only dismantle the pump as far as necessary Additional safety information for ME 4R NT Intended use AWARNING t Comply with all notes on how to connect the ME 4R NT correctly to vacuum and pressure systems see section Use and operation pg 31 t Use the equipment only as intended that is for gen eration of vacuum or for compression of gases in ves sels designed for that purpose Any other use will au tomatically invalidate all warranty and liability claims Remain aware of safety and risks Setting up and installing the equipment AWARNING ts When operating the pump as a compressor check that the system which you are going to pressurize is mechanically stable Check that the maximum gener IS 13 page 16 of 59 ated overpressure is compatible with the mechanical stability of the pressure vessel Do not generate over pressure in
35. ng the fuse AWARNING t The replacing of the fuse has to be carried out by a trained electrician Switch off the pump 3 Disconnect the electrical power cord before opening the terminal box After disconnecting from power wait two minutes to allow the capacitors to discharge After replacing the fuse the pump must be checked for elec tric safety see below Identify and eliminate the cause of failure before switching on the pump again The pigtail fuses are integrated into wires 1 black and blue inside the terminal box To replace the fuses it is necessary to replace both wires completely fixed with flat pin bushes 2 Open the terminal box Unscrew the four screws with a Torx driver T20 Remove the terminal box cover Remove both wires with inte grated fuses fixed with flat pin bushes 2 see figure Mount the new wires flat pin bushes and close the terminal box Fasten the cover with the four screws 636542 Important Check operability and safety of the pump after repair and after replacing the device fuse Check the electrical safety protective conductor resis tance insulating resistance high voltage test according to IEC 61010 and national regulations page 52 of 59 Notes on return to the factory Repair return DKD calibration Safety and health of our staff laws and regulations re garding the handling of dangerous goods occupational health and safety regul
36. nometers To vent the reference cham ber check which types of manometers are installed at the pump and proceed according to the given instructions Else not venting the manometers may lead to a system atic measuring error A Manometer with bore at the rear side Pierce the hole at the rear side of the manome ter Some outflow of liquid is normal t Do not tilt pump during transport B Manometer with pin Lift the pin to vent the manometer Do not re move the pin completely Close after venting i Repeat if necessary until the dial shows with the measuring connection at atmospher ic pressure Jg pressure compensation valve page 34 of 59 C Manometer with pressure compensation valve Vent the manometer using the pressure com pensation valve Close the valve after ventila tion t Repeat if necessary until dial shows zero with measuring connection at atmospheric pressure D Manometer without bore pin or pressure compensation valve Do not vent the reference chamber of this ma nometer NOTICE page 35 of 59 During operation t Vent and dispose of potentially dangerous gases or vapors at the outlet of the pump appropriately Dueto the high compression ratio the pump might gen erate overpressure at the outlet Check pressure com patibility with system components e g exhaust tubing or exhaust valve at the outlet Ensure that the pump outlet is neither blocked nor restricted M
37. nty gt dB A IP 40 45 Measurement according to EN ISO 2151 2004 and EN ISO 3744 1995 at 230V 50Hz and ulti mate vacuum with silencer at outlet Gas inlet temperatures Operating condition Inlet pressure Permitted range of gas temperatures at inlet gt 75 Torr 100 mbar Continuous operation high gas load 50 F to 104 F 10 C to 40 C lt 75 Torr 100 mbar low gas load Continuous operation 32 F to 140 F 0 C to 60 C Short time lt 75 Torr 100 mbar 14 F to 176 F lt 5 minutes low gas load 10 C to 80 C We reserve the right for technical modification without prior notice 18 59 cfm m3 h Maximum pumping speed 50 60 Hz ISO 21360 ME 4 NT ME 4S NT 2 25 NT 24 26 13 4 0 4 4 2 2 4 4 11 2 Torr Ultimate vacuum absolute mbar 52 70 ME 45 NT 56 75 5 2 7 psi bar Maximum permissible inlet pressure absolute 16 4 4 bar Maximum permissible outlet pressure absolute 29 2 psi bar Maximum pressure difference between inlet and outlet 29 2 Rated motor power hp KW 0 24 0 18 Maximum permissible range of supply voltage 10 Attention Observe specifications of rating plate Dual voltage motor 100 115 V 50 60 Hz 120V 60 Hz 230 V 50 60 Hz 100 115 V 50 60 Hz 120 V 60 Hz 20
38. o avoid backflow of condensate towards the pump Use a suitable valve to isolate the pump from the vacuum application This is to allow the pump to warm up before pumping condensable vapors and to clean the pump after use before it is switched off When assembling ensure vacuum tightness After as sembly check the whole system for leaks Secure hose connections at the pump appropriately e g with hose clamps to protect against accidental detach ment page 33 of 59 ME 4R NT t When operating the pump as a compressor check that the system which you are going to pressurize is mechanically stable Check that the maximum gener ated overpressure is compatible with the mechanical stability of the pressure vessel Do not generate over pressure in vessels other than in those designed for that purpose Risk of bursting Install an additional overpressure safety relief device in the pressure system if necessary t Especially when using the pump as vacuum pump pro vide a free and pressureless exhaust outlet to avoid damage to pump valves and risk of bursting Notes prior to the use of the manometers The manometers are filled with glycerin The overpressure manometer indicates the overpressure relative to the at mospheric pressure at the place of operation The vacuum meter indicates the absolute pressure Install the pump in the room of operation Vent the reference chambers prior to use There are dif ferent types of ma
39. o liquid There is a risk of deadly electrical shock Unplug the system immediately To the best of our knowledge the equipment is in com pliance with the requirements of the applicable EC direc tives and harmonized standards see Declaration of Con formity with regard to design type and model Directive EN 61010 1 gives in detail the conditions under which the equipment can be operated safely see also IP degree of protection Technical data pg 17 Adopt suitable measures in case of differences from rec ommended conditions e g using the equipment outdoors installation in altitudes of more than 3300 ft 1000 m above mean sea level conductive pollution or external conden sation on the pump A DANGER page 10 of 59 Pay attention to the permissible maximum ambient and gas inlet temperatures see Technical data pg 17 Do not operate this product near flames Operating conditions These pumps are not approved for operation in po tentially explosive atmospheres Do not operate the pumps in potentially explosive atmospheres These pumps not approved for the pumping of potentially explosive atmospheres Do not pump potentially explosive atmospheres The pumps are not suitable to pump any of the sub stances listed below Do not pump unstable substances substances which react explosively under impact mechanical stress without air substances which react explosively when being ex p
40. osed to elevated temperatures without air self inflammable substances substances which are inflammable without air explosive substances Do not pump substances which may form deposits in side the pump The pumps are not suitable for pumping substances which may form deposits inside the pump De posits and condensate in the pump may lead to increased temperatures even to the point of exceeding the maximum permitted temperatures Check the inlet and outlet of the pump if there is a danger of forming deposits inside the pump e g in the pump cham bers the pump chamber is the part between diaphragm and head cover See section Replacing diaphragms and valves pg 41 Inspect the pump chambers regularly and clean if necessary A DANGER page 11 of 59 The pumps are not suitable for pumping dust and they are not approved for operation below ground Do not pump dust and do not operate the pump below ground When changing the substances pumped we recommend to purge the pump with air or inert gas prior to changing the pumped media Purging the pump will pump out resi dues and it will reduce the possibility of reactions of the pumped substances with each other and with the pump s materials Consider interactions and chemical reactions of the pumped media Ensure that the materials of the pump s wetted parts are compatible with the pumped substances see section Technical data pg 17 Safety during operation
41. product from its packing box and retain all pack aging until the equipment is inspected and tested Re move the protective caps from the inlet and outlet ports and retain for future use Inspect the equipment promptly and carefully If the equipment is damaged notify the supplier and the carrier in writing within three days Retain all packing ma terial for inspection State the item number of the product together with the order number and the supplier s invoice number Failure to check and give notice of damage will void any and all warranty claims for those deficiencies Replace the protective caps if the equipment is not used immediately Store the equipment in dry and non corrosive conditions see also Technical data pg 17 Use the mounted handle when moving the pump ix Do not use any damaged equipment Intended use rz Do not use the pump or any system parts on humans or animals t Prevent any part of the human body from coming into contact with vacuum t Ensure that the individual components are only con nected combined and operated according to their de sign and as indicated in the instructions for use t Comply with all notes on correct vacuum and electrical connections see section Use and operation pg 31 t Use the equipment only as intended that is for gen eration of vacuum in vessels designed for that purpose Any other use will automatically invalidate all warranty and liability claims Remain aw
42. r versions of pumps This does not change the method of replacing diaphragms and valves t Never operate the pump if covers or other parts of the pump are disassembled Never operate a defective or damaged pump ts Before starting maintenance disconnect the electri cal power cord Wait two minutes after isolating the equipment from AC power to allow the capacitors to discharge t Ensure that the pump cannot be operated accidentally BY t Note The pump might be contaminated with the process chemicals that have been pumped during operation Ensure that the pump is decontaminated before main tenance Take adequate precautions to protect people from the effects of dangerous substances if contamina tion has occurred Ensure that the maintenance techni cian is familiar with the safety procedures which relate to the products processed by the pumping system Use appropriate protective clothing safety goggles and protective gloves t Avoid the release of pollutants A CAUTION Ensure that maintenance is done only by suitably trained and supervised technicians Check every motor capacitor regularly by measuring its capacity and estimating its service life Replace old ca pacitors early enough to prevent a failure The capaci tors must be replaced by a trained electrician Allow sufficient cooling of the pump before starting maintenance 42 59 Vent the pump and isolate it from t
43. row vacuum line Pump has been ex posed to condensate Deposits have been formed inside the pump Diaphragms or valves damaged Outgassing substances or vapor generated in the process Check pump directly connect vacuum gauge directly at pump inlet then check connection pipeline and vacuum system if necessary Close vacuum adjustment device Use lines with larger di ameter length as short as possible Allow pump to run for some minutes with atmo spheric pressure at the inlet to purge Clean and inspect the pump heads Replace diaphragms and or valves Check process parame ters 40 59 Fault Possible cause Remedy Pump too noisy Atmospheric or high d Connect hose or silencer pressure at the pump to pump outlet Be careful inlet not to cause outlet over pressure especially with condensable vapors Diaphragm crack or Perform maintenance diaphragm clamping disc loose Other than above men Contact local distributor tioned causes Pump seized Contact local distributor A service manual with exploded view drawings spare parts list and directions for repair is available on request t The service manual is intended for trained service people only 41 59 Replacing diaphragms and 5 Please read section Replacing diaphragms and valves com pletely before starting maintenance The pictures may show othe
44. se vacuum is in creased lower pressure Use the pressure adjustment device at the outlet port of the pump to control the overpressure accordingly Turning the dispensing screw counterclockwise pres sure is decreased Pump blows off via dispensing Screw Turning the dispensing screw clockwise pressure is creased Note Maximum permissible pressure 58 psi 4 bar Shutdown amp storage The pump can be switched off under vacuum Short term Has the pump been exposed to condensate Allow the pump to continue to run at atmospheric pres sure for a few minutes Has the pump been exposed to media which may damage the pump materials or form deposits Check and clean pump heads if necessary Long term Take measures as described above regarding short term shutdown Separate the pump from the application Close inlet and outlet ports e g with transport caps Store the pump under dry conditions page 38 of 59 Accessories Digital vacuum gauge DVR 2 682902 Vacuum hose caoutchouc 1 0 3 8 10 mm ID 686002 Antistatic PTFE tubing KF 16 1000 21 1 686031 Tubing stainless steel KF 16 1000 673336 Adapter small flange KF DN 16 to hose nozzle 1 2 636004 Adapter hose nozzle 3 8 DN 10mm to hose nozzle 1 2
45. submit repair quotations only on request and always at the customer s expense If an order is placed the costs incurred for problem diagnosis are offset from the costs for repair or from the purchase price if the customer pre fers to buy a new product instead of repairing the defec tive one f you do not wish a repair on the basis of our quo tation the equipment may be returned to you dis assembled and at your expense In many cases the components must be cleaned in the factory prior to repair For cleaning we use an environmentally friendly water based process Unfortunately the combined attack of el evated temperature cleaning agent ultrasonic treatment and mechanical stress from pressurized water may re sult in damage to the paint Please mark in the health and safety clearance form if you wish a repaint at your ex pense just in case such a damage should occur We will also replace parts for cosmetic reasons at your request and at your expense Before returning the equipment ensure that if applica ble Equipment has been cleaned and or decontaminated All inlet and outlet ports have been capped Equipment has been properly packed if necessary please order original packaging materials at your cost marked appropriately and the carrier has been notified of any possible contamination The completed health and safety clearance form is en closed We thank you in advance for your understanding of the
46. ue limitation 48 59 Assembling the pump heads Bring the diaphragms G into a position in which they are in contact with the housing K and centered with respect to the bore Put on head cover D ts Pay attention to the correct orientation of the head covers Align the nib at the head cover D with the notch of the housing cover A t Make sure that the diaphragm stays centered with respect to the bore so that it will become clamped uniformly between housing K and head cover D Put the valves and O rings B not ME 8 NT in place See figure for the correct position of the valves Inlet side of pump head The valve tongue points at the kidney shaped orifice in the valve seat 1 Outlet side of pump head The valve is oriented the same direction as the valve at the inlet side Only MZ 2D NT Installing the white PTFE valves at outlet of 1st stage and at inlet of 2nd stage see figure Put on housing cover t f it is not possible to position the housing cover check the head cover for correct orientation The nib at the head cover has to lock into the notch of the housing cover ME 8 NT MD 4 NT MV 2 NT Install the connecting tube L under the pump between the two housing covers Pay attention to the correct positions of the seal rings replace if damaged in the grooves at the ends of the tube Fit the connecting tube in the bore of the housing cover After assembly th
47. ure at the outlet Check pressure com patibility with system components e g exhaust pipe line or exhaust valve at the outlet Do not permit any uncontrolled pressurizing Make sure that the exhaust pipeline cannot become blocked If there is an exhaust isolation valve make sure that you cannot operate the equipment with the valve closed to page 8 of 59 avoid a risk of bursting ts Always provide a free and pressureless exhaust outlet to avoid damage to pump valves and risk of bursting Provide a firm level platform for the equipment Check that the system which you are going to evacuate is mechanically stable Check that all fittings are secure Ensure a stable position of the pump without any me chanical contact other than the pump feet Comply with all applicable safety regulations Comply with maximum permissible pressures at in let and outlet and with maximum permissible pres sure differences between inlet and outlet See section Technical data pg 17 Do not operate the pump with overpressure at the inlet Avoid overpressure of more than 17 5 psi absolute 1 2 bar absolute in the event that inert gas is connected to the pump or to a venting valve Keep the electrical power cord away from heated sur faces e Note Flexible elements will shrink when evacuated Check the power source and the pump s rating plate to be sure that the power source and the equipment match in volt age phase and frequency
48. ut down by a self hold thermal circuit breaker in the winding Note Only a manual reset is possible Switch off the pump and disconnect the electrical power cord Identify and eliminate the cause of failure Wait approximately five minutes before restarting the pump Note In case of supply voltage below 100V the lock of the breaker may not latch and the pump might restart on its own after sufficient cooling Take appropriate pre cautions if an automatic restart of the pump may lead to a dangerous situation NOTICE A warm up period approximately 15 min is required to NOTICE ensure that the rated ultimate vacuum and pumping speed are attained Avoid overheating e g due to hot process gases ME 4R NT Note There are no stops at the end of the dispensing screws threads Do not completely unscrew the dis pensing screws In case of continuous operation with inlet pressures above atmospheric pressure the inlet pressure must not exceed the outlet pressure Maximum permissible outlet pressure 58 psi 4 bar absolute Use the vacuum adjustment device at the inlet port of the pump to control the vacuum in the system Turning the dispensing screw controls the amount of gases pumped from the vacuum system Turning the dispensing screw counterclockwise vacu um is decreased higher pressure Intake of additional bleed air via the dispensing screw NOTICE page 37 of 59 Turning the dispensing screw clockwi
49. vent contamination of the pumped substances or the environment Do not start the pump if the pressure difference between inlet and outlet exceeds 16 psi 1 1 bar at maximum Prevent the backpressure of gases and the backflow of condensates at the outlet Never aspirate liquids or dust into the pump Provide appropriate protective measures to allow for the possibility of failure and malfunction The protective mea sures must also allow for the requirements of the respec tive application In case of overload the motor is shut down by a self hold thermal cutout in the winding Note Only manual reset is possible Switch off the pump and disconnect from the power source Identify and elimi nate the cause of failure Wait approx five minutes before restarting the pump CAUTION Note In case of supply voltage below 100V the lock of the cutout might be impaired and the pump may restart on its own after sufficient cooling down Take appropriate precautions if an automatic restart of the pump may lead to a dangerous situation NOTICE 2 page 14 of 59 Maintenance and repair In order to comply with laws occupational health and safety regulations safety at work law and regulations for environmental protection vacuum pumps components and measuring instruments can only be returned when certain procedures see section Notes on return to the factory pg 52 are followed Take advantage of our s
50. vessels other than in those designed for that purpose Risk of bursting Comply with maximum permissible pressure at the outlet 58 psi 4 bar absolute The pump has an overpressure safety relief device at the pressure adjust ment device at the outlet opening pressure 58 psi 4 bar absolute Install an additional overpressure safety relief device in the pressure system if necessary Note Flexible elements will expand when pressur ized Do not permit any uncontrolled pressurizing Make sure that the exhaust pipeline cannot become blocked Especially when using the pump as vacuum pump pro vide a free and pressureless exhaust outlet to avoid damage to pump valves and risk of bursting Comply with maximum permissible pressures at in let and outlet and with maximum permissible pres sure differences between inlet and outlet See section Technical data pg 17 Do not start the pump with overpressure at the inlet 17 59 Technical data General technical data valid for all pumps Permissible ambient temperature F storage operation C 14 to 140 50 to 104 10 to 60 10 to 40 Permissible relative atmospheric mois 9 ture during operation no condensation No load speed 50 60 Hz 30 to 85 1500 1800 Device fuse Motor protection slow blow fuse 6 3 A thermal cutout manual reset Degree of protection IEC 529 A weighted emission sound pressure dB A level uncertai
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