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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.: 999155 / 29/01/2009

page 6 of 36

 

-

 

self inflammable

 substances, 

-

  substances which are inflammable without air and 

-  explosive substances

.

•  The pumps are 

not suitable

 for pumping substances which may form 

deposits

 

inside the pump. Deposits and condensate in the pump may lead to increased 

temperatures even to the point of excessing the maximum permitted tempera-

tures! 

•  If there is a danger of 

deposits

 in the pump chamber (check inlet and outlet of the 

pump), inspect the pump chambers regularly and clean if necessary.

•  The pumps are 

not suitable

 for pumping dust and have 

no approval

 for opera-

tion below ground.

If pumping 

different substances

, it is recommended to purge the pump with air or 

inert gas prior to changing the pumped media in order to pump out residues and to 

avoid reactions of the pumped substances with each other and with the pump ma-

terials.

Take  into  consideration  interactions  and  chemical  reactions  of  the  pumped 

media.

 Ensure that the materials of the wetted parts are compatible with the pumped 

substances, see section ”Technical data”.

Safety during operation

  Adopt suitable measures to prevent the release of dangerous, toxic, explosive, cor-

rosive, noxious or polluting fluids, vapours and gases. In case install an appropriate 

collecting and disposal system and take protective action for pump and environment.

  Prevent any part of the human body from coming in contact with vacuum.

  The user must take suitable precautions to prevent any formation of explosive 

mixtures in the expansion chamber or at the outlet. In case of e.g. a diaphragm 

crack, mechanically generated sparks, hot surfaces or static electricity may ignite 

these mixtures. Use inert gas for venting if necessary.

  Potentially explosive mixtures at the outlet of the pump have to be drained ap-

propriately, sucked off or diluted with inert gas to non-explosive mixtures.

  Pay  attention  to  the  symbol  ”hot  surfaces”  on  the  equipment.  Adopt  suitable 

measures to prevent any danger arising from the formation of hot surfaces or 

electric sparks. Provide a suitable protection against contact if necessary.

  Ensure that the exhaust pipeline is always free and pressureless.

•  Comply with applicable regulations when disposing of chemicals. Take into con-

sideration that chemicals may be polluted.

  Take adequate precautions to protect people from the effects of dangerous sub-

stances (chemicals, thermal decomposition products of fluoroelastomers), wear 

appropriate safety-clothing and safety glasses.

 

•  Use only 

OEM spare parts and accessories.

 Otherwise safety and perform-

ance of the equipment as well as the electromagnetic compatibility of the equip-

ment might be reduced. Possibly the CE mark or the cTÜVus mark become void 

if not using OEM spare parts.

Do not start the pump if the pressure difference between inlet and outlet port ex-

ceeds 1.1 bar at maximum.

NOTICE

NOTICE

Summary of Contents for ME 4 NT

Page 1: ...the users responsibility to check carefully the validity of this document with respect to his product Manual no 999155 29 01 2009 page 1 of 36 Diaphragm pumps Instructions for use Technology for Vacuu...

Page 2: ...CUUBRAND diaphragm pumps are the result of many years of experience in design and construction and practical operation of these pumps combined with the latest developments in material and manu facturi...

Page 3: ...rom mains before removing the cover NOTICE Contents Safety information 4 General information 4 Intended use 4 Setting up and installing the equipment 4 Ambient conditions 5 Operating conditions 5 Safe...

Page 4: ...mperatures during operation between 10 C and 40 C Check the maximum temperatures if installing the pump in a cabinet or a housing and make sure ventilation is adequate Install an external automatic ve...

Page 5: ...bient parts e g housing walls Check fan regularly for dust dirt clean if necessary to avoid a cutback of ventilation If the equipment is brought from cold environment into a room for operation allow t...

Page 6: ...install an appropriate collecting and disposal system and take protective action for pump and environment Prevent any part of the human body from coming in contact with vacuum The user must take suita...

Page 7: ...sufficient cooling down Take suitable precautions if an automatic restart of the pump might lead to a critical dan gerous situation The A weighed emission sound pressure level of the pump does not ex...

Page 8: ...nt correctly to vacuum and pressure systems see section Use and operation Use the equipment for the intended use only i e to generate vacuum or to com press gases in vessels designed for that purpose...

Page 9: ...sible ambient temperature storage operation C 10 to 60 10 to 40 Permissible relative atmospheric moisture during operation no condensation 30 to 85 Rated motor power W 180 No load speed 50 60 Hz min 1...

Page 10: ...operation C 10 to 60 10 to 40 Permissible relative atmospheric moisture during operation no condensation 30 to 85 Rated motor power W 250 No load speed 50 60 Hz min 1 1500 1800 Maximum permissible ran...

Page 11: ...ding of manometer bar 3 Maximum pressure difference between inlet and outlet bar 4 Permissible ambient temperature storage operation C 10 to 60 10 to 40 Permissible relative atmospheric moisture durin...

Page 12: ...cover aluminium alloy AlSi12 Diaphragm clamping disc aluminium alloy AlSi12 Diaphragm clamping disc MZ 2S NT ME 8S NT ETFE carbon fibre reinforced Diaphragm FPM Diaphragm MZ 2S NT ME 8S NT ME 4R NT P...

Page 13: ...to his product Manual no 999155 29 01 2009 page 13 of 36 Pump parts ME 4 NT 1 5 3 2 6 Position Component 1 Inlet 2 Outlet 3 On off switch 4 Mains connection 5 Handle 6 Pump rating plate 7 Fan 8 Inlet...

Page 14: ...ely and unchanged It is strictly the users responsibility to check carefully the validity of this document with respect to his product Manual no 999155 29 01 2009 page 14 of 36 MZ 2 NT MZ 2S NT 1 5 3...

Page 15: ...uted completely and unchanged It is strictly the users responsibility to check carefully the validity of this document with respect to his product Manual no 999155 29 01 2009 page 15 of 36 ME 8 NT ME...

Page 16: ...y and unchanged It is strictly the users responsibility to check carefully the validity of this document with respect to his product Manual no 999155 29 01 2009 page 16 of 36 MD 4 NT MV 2 NT fig MD 4...

Page 17: ...con stitutes a potential source of danger take appropriate safety measures Pump with dual voltage motor Check that the voltage changeover switch at the terminal box is positioned correctly Attention...

Page 18: ...mum pressure difference between inlet and outlet ports ME 4R NT For continuous operation at inlet pressures above atmospheric pressure the inlet pressure must not exceed the outlet pressure The maxima...

Page 19: ...e only manually Switch off the pump or isolate the equipment from mains Determine and eliminate the cause of failure Wait approx five minutes before restarting the pump Attention In case of supply vol...

Page 20: ...e 20 of 36 Accessories Non return valve flapper valve 639683 Simultaneous operation of two systems at different pressure levels stainless steel FFKM leak rate 10 3 mbar x l s for pressure differences...

Page 21: ...reset is necessary Switch off pump or unplug mains Pump does not achieve its ultimate vacuum or usual pumping speed Centring ring at small flange connection not correctly posi tioned or leak in the p...

Page 22: ...ble trained and supervised technicians Ensure that the pump cannot be operated accidentally Never operate the pump if covers or other parts of the pump are disassembled Never operate a de fective or d...

Page 23: ...the position of the valves and remove them Replace valves if necessary Use petroleum ether or industrial solvent to remove de posits Do not inhale Cleaning and inspecting the pump heads ME 4 MZ 2 D Us...

Page 24: ...2 O rings not ME 8 NT 3 Valves 4 Head cover 5 Diaphragm clamping disc with square head screw MZ 2D NT with countersunk head screw Pump head parts 6 Countersunk head screw 7 Diaphragm 8 Diaphragm suppo...

Page 25: ...er of washers The pump will not attain ultimate vacuum More washers The clamp ing disc will hit the head cover noise or even blockade and damage of the pump Attention Double diaphragm consisting of tw...

Page 26: ...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 of the head cover 2 beside valve Only MZ 2D NT Inst...

Page 27: ...ME 8 NT MD 4 NT MV 2 NT Install the connecting tube 1 under the pump between the two housing covers Screw in the socket head screws fixing the housing cover crosswise first slightly then tighten Torqu...

Page 28: ...w the four screws with a Torx screw driver TX20 and remove the terminal box cov er Remove the wire with the blown fuse fixed with flat pin bushes 2 see figure Mount the new wire flat pin bushes and cl...

Page 29: ...onditions with every product returned for repair We submit quotations only on request and always at the customer s expense If an order is given the costs incurred are offset from the costs for repair...

Page 30: ...e returned product that neither toxic corrosive biologically active explosive radio active nor contamination dangerous in any way has occurred the product is free of dangerous substances the oil or re...

Page 31: ...out the agreement of the manufacturer Par la pr sente nous d clarons que le dispositif d sign ci dessus est conforme aux prescriptions de base des directives EU applicables et indiqu s en ci que conce...

Page 32: ...It is strictly the users responsibility to check carefully the validity of this document with respect to his product Manual no 999155 29 01 2009 page 32 of 36 This certificate is only valid for pumps...

Page 33: ...nly 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 999155 29 01 2009...

Page 34: ...nly 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 999155 29 01 2009...

Page 35: ...nly 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 999155 29 01 2009...

Page 36: ...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 app...

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