page 1 of 24 Technology for Vacuum Systems Instructions for use ME 2 - ME 4 - MZ 2 - MZ 2D Diaphragm pumps Documents are only to be used and distributed completely and unchanged. It is strictly the users´ responsibility to check carefully the validity of this document with respect to his product. manual-no.
page 2 of 24 Dear customer, Your VACUUBRAND diaphragm pump shall support you at your work for a long time without any trouble and with full load output. Thanks to our large practical experience we attained much information how you could add to an efficient application and to personal safety. Please read these instructions for use prior to the initial start-up of your pump.
page 3 of 24 Contents Safety information! .................................................................................................... 4 Technical data ............................................................................................................ 7 Use and operation ................................................................................................... 11 Accessories - Installation .......................................................................................
page 4 of 24 Safety information! Remove all packing material, remove the product from its packing-box, remove the protective covers from the inlet and outlet ports and keep, inspect the equipment. If the equipment is damaged, notify the supplier and the carrier in writing within three days; state the item number of the product together with the order number and the supplier’s invoice number. Retain all packing material for inspection. Do not use the equipment if it is damaged.
page 5 of 24 ☞ Comply with maximum permitted pressures and pressure differences, see section ”Technical data”. Do not operate the pump with overpressure at the inlet. Do not permit any uncontrolled pressurizing (e. g. make sure that the exhaust pipeline cannot become blocked). If you have an exhaust-isolation valve, make sure that you cannot operate the equipment with the valve closed. Risk of bursting! ☞ Ensure that the system design does not allow the exhaust pipeline to become blocked.
page 6 of 24 Due to the residual leak rate of the equipment, there may be an exchange of gas, albeit extremely slight, between the environment and the vacuum system. ☞ Adopt suitable measures to prevent contamination of the pumped substances or the environment. The motor is shut down by a thermal cutout in the winding. ☞ Attention: Manual reset is necessary. Switch off the pump or isolate the equipment from mains. Wait approx. five minutes before restarting the pump.
page 7 of 24 Technical data Type Pumping speed 50/60 Hz DIN 28432 Ultimate (total) vacuum (absolute) DIN 28432 ME 2 ME 4 MZ 2 MZ 2D m 3/ h 1.9/2.2 m a x i mu m 3.6/4.0 m a x i mu m 1.9/2.2 2.2/2.4 mbar < 80 < 80 9 4 Max. per mitted outlet pressure (absolute) bar 2 4 2 1.1 Max. per mitted difference p r e s s u r e b e t we e n i n l e t and outlet bar 2 2 2 1.1 Max. per mitted ambient t e m p e ra t u r e d u r i n g s t o ra g e / o p e ra t i o n -10 to +60 / +10 to +40 Max.
page 8 of 24 Components Wetted par ts housing cover / head cover d i a p h ra g m c l a m p i n g d i s c diaphragm / valve hose nozzle (ME 2 / MZ 2) hose nozzle (ME 4) small flange (MZ 2D) silencer hose fitting seal (ME 2 / ME 4 / MZ 2) seal (MZ 2D) aluminium alloy (AlSi12) aluminium alloy (AlSi12) FPM PBT stainless steel stainless steel PA / PE PE a l u m i n i u m , a n o d i ze d PVC FPM We reserve the right for technical modification without prior notice! Gas inlet temperatures: Permitted range o
page 9 of 24 ME 2 handle outlet with silencer mains cable inlet on/off switch pump rating plate ME 2 with dual voltage motor 100-120/200-230 V handle outlet with silencer inlet pump rating plate on/off switch underneath warning label terminal box voltage changeover switch underside terminal box Documents are only to be used and distributed completely and unchanged. It is strictly the users´ responsibility to check carefully the validity of this document with respect to his product. manual-no.
page 10 of 24 ME 4 inlet on/off switch mains cable outlet with silencer motor rating plate pump rating plate MZ 2 / MZ 2D inlet (MZ 2: hose nozzle) (fig.: MZ 2D) outlet on/off switch mains cable motor rating plate pump rating plate MZ 2D with dual-voltage motor 100-120/200-230 V outlet inlet on/off switch motor rating plate connection mains cable pump rating plate voltage changeover switch Documents are only to be used and distributed completely and unchanged.
page 11 of 24 Use and operation Installing in a vacuum system: ☞ Avoid throttling losses by using connecting pipes with large diameter and keep them as short as possible. ☞ Reduce the transmission of vibration and prevent loading due to rigid pipelines. Insert elastic hoses or flexible elements as couplings between the pump and rigid pipes.
page 12 of 24 During operation: Max. ambient temperature: 40 °C ☞ Make sure ventilation is adequate if pump is installed in a housing or if ambient temperature is elevated. ☞ If pump is installed in altitudes of more than 1000 m above mean sea level check compatibility with applicable safety requirements, e. g. IEC 60034 (motor may overheat due to insufficient cooling). The motor is shut down by a thermal cutout in the winding. ☞ Attention: Manual reset is necessary.
page 13 of 24 Accessories - Installation ME 2 / MZ 2 Small flange DN 16 .................................................. 662590 Clamping ring DN 10/16 (aluminium) ......................... 660000 Centring ring DN 10/16 (NBR) ................................... 660190 Hose nozzle (for MZ 2D) ............................................ 639758 ME 4 Small flange DN 16 .................................................... 639861 Clamping ring DN 10/16 (aluminium) .........................
page 14 of 24 Vacuum adjustment device (inlet) ........................... 696840 Pressure adjustment device (outlet) ......................... 696841 Installation vacuum and / or pressure adjustment device at ME 2 / MZ 2 Installation vacuum adjustment device at ME 4 (omit extra parts) Installation pressure adjustment device at ME 4 (use extra seal rings of the pressure adjustment device) Additional parts are necessary: Swivelling screw-in fitting ............................................
page 15 of 24 Troubleshooting Fault Possible cause R e m e dy Pump fails to star t or stops immediately. Î Mains not plugged in, electr ical supply failure? ) Plug in. Check fuse. Î Pressure in outlet pipeline too high? ) Remove blockade in line, open valve. Î Motor over loaded? ) A l l ow m o t o r t o c o o l , identify and eliminate cause of failure. Manual reset necessar y. Switch off pump or isolate equipment f r o m m a i n s.
page 16 of 24 Replacing diaphragms and valves All bearings are encapsulated and are filled with long-life lubricant. Under normal operating conditions, the pump is maintenance free. The valves and the diaphragms as well as the motor capacitors 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.
page 17 of 24 Cleaning and inspecting the pump heads: ➨ Use open-ended wrench, remove the screw-in fittings together with the hose from all pump heads. ➨ To check the valves use hex key to remove four sockethead screws from pump head and remove housing cover with head cover, valves and O-ring (MD 4 / MV 2 only). ☞ Never remove parts by using a spiky or sharp-edged tool (e.g. screw driver), we recommend to use a rubber mallet or compressed air (to be blown carefully into port).
page 18 of 24 ☞ Check diaphragm for damage and replace if necessary. ➨ To do so use Phillips screw driver to remove four countersunk head screws and lift off housing plate with rating plate. ☞ Use petroleum ether or industrial solvent to remove deposits if necessary. Do not inhale. Notes regarding the assembling of the diaphragm The set of seals is designated for diaphragm pumps with different technical performance.
page 19 of 24 Replacing a diaphragm with square hole ➨ Use a face wrench to remove diaphragm support disc. ➨ Check for washers under clamping disc. Do not mix the washers from the different heads. Make sure that the original number is reassembled at the individual pump head. ☞ Smaller number of washers: The pump will not attain ultimate vacuum. More washers: Clamping disc will hit head cover; noise or even blockade of the pump.
page 20 of 24 ☞ Attention: When reassembling the housing covers of pumps type MZ 2D ensure that the head covers are not exchanged. Always assemble the housing cover with groove at the outlet side of the pump. ➃ ➀ ➂ ➁ ➨ Screw in four socket head screws fixing housing cover crosswise (e. g. in the sequence ➀, ➁, ➂, ➃) first slightly, then tighten. ☞ Do not tighten until head cover is in contact with housing, torque 12 Nm.
page 21 of 24 Notes on return to the factory Repair - return - DKD calibration Safety and health of our staff, laws and regulations regarding the handling of dangerous goods, occupational health and safety regulations and regulations regarding safe disposal of waste require that for all pumps and other products the ”Health and safety clearance form”. must be send to our office duly completed and signed before any equipment is dispatched to our premises.
page 22 of 24 Health and safety clearance form Declaration 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.
page 23 of 24 Konformitätserklärung Declaration of conformity Déclaration de conformité Membranpumpe / Diaphragm pump / Pompe à membrane ME 2 (230V; 696120, 696126) ME 4 (230V; 696140, 696146) MZ 2 (230V; 696240, 696247) MZ 2D (230V; 696258, 696268) Hiermit erklären wir, dass das oben bezeichnete Gerät in Konzeption und Bauart sowie in der von uns in Verkehr gebrachten Ausführung den grundlegenden Anforderungen der zutreffenden, aufgeführten EURichtlinien entspricht.
page 24 of 24 Disclaimer: Our technical literature is only intended to inform our customer. The validity of general empirical values and results obtained under test conditions for specific applications depend 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, consequently, be entertained.
