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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.

page 1 of 24

No. 47800-2-02-5

Diaphragm pump

Instructions for use

MD 4U NT

The voltage changeover switch at the time of the delivery is "240".

(The voltage corresponds to 180-253V.)

Application at "90-126V":

Please exchange a voltage changeover switch with "120".

Change the selection at the voltage changeover switch only if the pump is separated from

mains.

Summary of Contents for MD 4U NT

Page 1: ...spect to his product page 1 of 24 No 47800 2 02 5 Diaphragm pump Instructions for use MD 4U NT The voltage changeover switch at the time of the delivery is 240 The voltage corresponds to 180 253V Appl...

Page 2: ...age to the product Caution Hot surface Isolate equipment from mains before removing the cover NOTICE Contents Safety information 3 General information 3 Intended use 3 Setting up and installing the eq...

Page 3: ...ring 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 ventilation sys...

Page 4: ...pump without any mechanical contact except of the pump feet Comply with all applicable safety regulations Keep a distance of minimum 20 cm between fan and ambient parts e g housing walls Check fan re...

Page 5: ...ach 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 subs...

Page 6: ...ntenance Due to the residual leak rate of the equipment there might be an exchange of gas albeit extremely slight between the environment and the vacuum system Adopt suitable measures to prevent conta...

Page 7: ...ts processed by the pumping system In order to comply with law occupational health and safety regulations safety at work law and regulations for environmental protection vacuum pumps components and me...

Page 8: ...bar 1 1 Maximum permissible pressure absolute at gas ballast valve bar 1 2 Permissible ambient temperature storage operation C 10 to 60 10 to 40 Permissible relative atmospheric moisture during operat...

Page 9: ...ion 100 mbar low gas load 0 C to 60 C Short time 5 minutes 100 mbar low gas load 10 C to 80 C Components Wetted materials Housing cover aluminium alloy AlMgSi0 5 or AlSi12 Head cover aluminium alloy A...

Page 10: ...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 page 10 of 24 No 47800 2 02 5 MD 4...

Page 11: ...ures Pump with dual voltage motor Check that the voltage changeover switch at the terminal box is positioned correctly Attention If the pump is switched on with wrong voltage selection the motor may b...

Page 12: ...ight overheat due to insufficient cooling Do not start the pump if the pressure at outlet port exceeds maximum 1 1 bar absolute Attempts to start the pump at higher pressures may cause blockade and da...

Page 13: ...the cap 180 gas ballast Shutdown Short term Has the pump been exposed to condensate Allow the pump to continue to run at atmospheric pressure for a few minutes Has the pump been exposed to media whic...

Page 14: ...achieve its ultimate vacuum or usual pumping speed Centring ring at small flange connection not correctly posi tioned or leak in the pipeline or vacuum system Check pump directly con nect vacuum gauge...

Page 15: ...ill improve the lifetime of the pump and also protect both man and environment Ensure that maintenance is done only by suitable trained and supervised technicians Ensure that the pump cannot be operat...

Page 16: ...ed air to be blown carefully into port Remove the head cover carefully from the housing cover Note the position of the valves and remove them Replace valves if necessary Use petroleum ether or industr...

Page 17: ...ng rod Do not mix the washers from the different pump heads Make sure that the original number is reassembled at the individual pump head Smaller number of washers The pump will not attain ulti mate v...

Page 18: ...over Put the valves in place In case install O rings 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 o...

Page 19: ...ushes 2 see figure Mount the new wire flat pin bushes and close the terminal box Fasten the cover with the four screws The replacing of the device fuse has to be carried out by an electrician Switch o...

Page 20: ...rating conditions 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...

Page 21: ...spection for pump required No charge Immediate repairing is required Charge Periodical inspection or over haul Charge Repair order is required and estimation is required before start repairing Trouble...

Page 22: ...um pumps Safety requirements Part2 Vacuum pumps DIN EN 61010 1 2011 IEC 61010 1 2010 Ed 3 Safety requirement for electrical equipment for measurement control and laboratory use General requirement EN...

Page 23: ...81 45 533 0206 FAX 81 45 533 0204 Osaka Branch 3 3 31 Miyahara Yodogawa ku Osaka shi Osaka fu Japan TEL 81 6 6350 2166 FAX 81 6 6350 2169 Nagoya Branch 3 11 31 Sakae Naka ku Nagoya shi Aichi Prf Japa...

Page 24: ...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 page 24 of 24 No 47800 2 02 5 2...

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