page 1 of 28 Technology for Vacuum Systems Instructions for use ME 2C - ME 4C - MZ 2C MZ 2C + 2 AK - MZ 2C + AK + EK MZ 2C + AK Synchro + EK Chemistry 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 28 Dear customer, Your VACUUBRAND diaphragm pumps should support you for many years without trouble and with optimal performance. Thanks to our long practical experience we have much information and advice how you can achieve powerful application and personal safety through our products. Please read these instructions for use before the initial operation of your pump.
page 3 of 28 Contents Safety information! .................................................................................................... 4 Technical data ............................................................................................................ 8 Use and operation ................................................................................................... 13 Accessories - installation .......................................................................................
page 4 of 28 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 them, 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 28 ☞ 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 28 ☞ The user must take suitable precautions to prevent any formation of explosive mixtures in the expansion chamber or at the outlet. In case of a diaphragm crack, mechanically generated sparks, hot surfaces or static electricity may ignite these mixtures. ☞ Take adequate precautions to protect people from the effects of dangerous substances (chemicals, thermal decomposition products of fluoroelastomers), wear appropriate safety-clothing and safety glasses.
page 7 of 28 Wear parts have to be replaced regularly. In case of normal wear the lifetime of the diaphragms and valves is > 10000 operating hours. Bearings have a typical durability of 40000 h. Motor capacitors have a typical durability in the range of 10000 to 40000 h depending strongly on the operation conditions like ambient temperature, humidity or load. ☞ Check every capacitor regularly by measuring its capacity and estimating its operation time.
page 8 of 28 Technical data Type ME 2C ME 4C MZ 2C m 3/ h 1.9/2.2 (max.) 3.6/4.0 (max.) 1.9/2.1 Ultimate vacuum (absolute) mbar < 80 < 80 9 Ultimate vacuum (absolute) with gas ballast mbar - - 15 Max. per missible outlet pressure (absolute) bar 2 2 2 Max. pressure difference between inlet and outlet bar 1.1 1.1 1.
page 9 of 28 Type MZ 2C + 2AK MZ 2C + AK + EK C o n n e c t i o n c o o l i n g wa t e r Dimensions L x W x H Weight approx. - MZ 2C + AK Synchro + EK hose nozzle NW 6 mm 345 x 241 x 326 350 x 261 x 495 350 x 279 x 495 kg 12.2 14.
page 10 of 28 ME 2C with dual voltage motor 100-120/200-230 V handle outlet inlet on/off switch underneath warning label pump rating plate terminal box voltage changeover switch underside terminal box ME 4C handle mains switch inlet supply cable outlet motor rating plate pump rating plate MZ 2C inlet handle outlet mains switch gas ballast valve supply cable motor rating plate pump rating plate Documents are only to be used and distributed completely and unchanged.
page 11 of 28 MZ 2C + 2 AK (mounted to pump support with catchpot at inlet and outlet) gas ballast valve handle inlet outlet round bottom flask as catchpot at inlet round bottom flask as catchpot at outlet MZ 2C + AK + EK (mounted to pump support with catchpot at inlet and exhaust waste vapour condenser) exhaust waste vapour condenser with cover (protection against glass splinters in the event of breaking, thermal isolation avoid condensation of humidity) handle inlet gas ballast valve overpressure saf
page 12 of 28 MZ 2C + AK Synchro + EK (mounted to pump support with catchpot at inlet and exhaust waste vapour condenser) flow control diaphragm exhaust waste vapour condenser with cover (protection against glass splinters in the event of breaking, thermal isolation avoid condensation of humidity) handle flow control diaphragm overpressure safety relief device at exhaust waste vapour condenser gas ballast valve inlet with non-return valve round bottom flask as catchpot at inlet round bottom flask as
page 13 of 28 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. Attention: Flexible elements tend to shrink when evacuated.
page 14 of 28 ☞ When assembling, ensure vacuum-tightness. After assembly, check the complete system for leaks. MZ 2C + AK + EK / MZ 2C + AK Synchro + EK / MZ 2C + 2 AK with separator at the inlet and exhaust waste vapour condenser at the outlet: Round bottom flasks: The catchpot at the inlet prevents droplets and particles from entering the pump. ☞ Lifetimes of diaphragms and valves are enhanced. ☞ Improves vacuum in case of condensation.
page 15 of 28 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. ☞ Attention: In case of supply voltage below 100V, the lock of the cutout might be restricted and the pump might restart on its own after sufficient cooling down. Take suitable precautions, if an automatic restart of the pump may lead to a critical dangerous situation.
page 16 of 28 Removing the catchpots: Catchpot at outlet: ➨ Remove joint clip, remove catchpot and drain condensate. Catchpot at inlet: ➨ Admit air or inert gas (via inlet of pumping unit) to atmospheric pressure. Remove joint clip, remove catchpot and drain condensate. ➨ Reassemble drained catchpots. Important: Comply with regulations when disposing solvents/condensates. Reuse if possible, purify if contaminated.
page 17 of 28 Accessories - installation The chemistry diaphragm pumps are equipped with a hose nozzle which can easily be replaced by a small flange. ME 2C / MZ 2C Small flange NW 16 ................................................... 696820 Clamping ring NW 10/16 (aluminium) ....................... 660000 Centring ring NW 10/16 (FPM) ................................. 660195 ME 4C Small flange NW 16 ...................................................
page 18 of 28 Controller support with multiple socket outlet ........................................... 699936 (to be assembled on base plate) Support extension ..................................................... 638491 (Assembly on controller support) Extension for mounting a second controller to operate two separate vacuum systems. Digital vacuum gauge DVR 2 .................................... 682902 Vacuum controller CVC 2II CEE (230 V, 50/60 Hz) .................................................
page 19 of 28 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 cause of failure. Î Voltage changeover switch not correctly positioned? ) Set the voltage changeover switch to the position being confor m with the supply voltage.
page 20 of 28 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 21 of 28 Cleaning and inspecting the pump heads: ➨ Use open-ended wrench (w/f 17) to remove union nuts. ➨ Use open-ended wrench (w/f 14) to turn elbow fitting 1/4 of a turn, remove hose. Do not remove the elbow fitting from the pump head. ☞ Through reassembly a leak may result.
page 22 of 28 ➨ To check valves use hex key to remove four socket head screws from pump head and remove upper housing (housing cover with housing cover insert), head cover and valves. ☞ 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). ➨ Remove head cover from housing cover insert and check valves. Note position of valves and remove. ☞ Replace valves if necessary.
page 23 of 28 Assembling pump heads: ➨ By turning eccentric bushing (front of connecting rod), bring connecting rod into a position in which diaphragm is in contact with housing and centred with respect to bore. Reassemble in reverse order. ➨ Install head cover, valves and housing cover with housing cover insert. ☞ Make sure that the valves are correctly seated: Valves at the outlet with round centred opening under valve, valves at the inlet with kidney-shaped opening beside valve.
page 24 of 28 Assembling fittings: ➨ Use open ended wrench (w/f 14) to reconnect hose to elbow fitting. ➨ Tighten union nuts first by hand and then tighten one full turn using open ended wrench (w/f 17). If the pump does not achieve the ultimate vacuum: ☞ In case the diaphragms and valves have been replaced, a run-in period of several hours is required before the pump achieves its ultimate vacuum.
page 25 of 28 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 sent to our office duly completed and signed before any equipment is dispatched to our premises.
page 26 of 28 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 27 of 28 Konformitätserklärung Declaration of conformity Déclaration de conformité Membranpumpe / Diaphragm pump / Pompe à membrane ME 2C (230V; 696121, 696132) ME 2C (100-230V; 696124) ME 4C (230V; 696141, 696149) MZ 2C (230V; 696241, 696265) MZ 2C + 2 AK (230V; 688018, 688171) MZ 2C + AK + EK (230V; 688021, 688174) MZ 2C + AK Synchro + EK (230V; 688024, 688177) Hiermit erklären wir, dass das oben bezeichnete Gerät in Konzeption und Bauart sowie in der von uns in Verkehr gebrachten Ausführung den gru
page 28 of 28 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.
