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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.
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
Instructions for use
No. 47800-2-02-5
MD 4U NT
Diaphragm pump
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Summary of Contents for Ulvac MD 4U NT
- Page 1 Change the selection at the voltage changeover switch only if the pump is separated from mains. MD 4U NT Diaphragm pump Documents are only to be used and distributed completely and unchanged. It is strictly the users’ responsibility to check carefully...
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Page 2: Table Of Contents
No. 47800-2-02-5 page 2 of 24 Contents Safety information! .....................3 General information ..........................3 Intended use ............................3 Setting up and installing the equipment .....................3 Ambient conditions ..........................4 Operating conditions ..........................5 Safety during operation ........................5 Maintenance and repair ........................7 Technical data ......................8 Gas inlet temperatures ........................9 Wetted parts ............................9 Pump parts ............................9... -
Page 3: Safety Information
No. 47800-2-02-5 page 3 of 24 Safety information! General information ☞ Read and comply with this manual before installing or operating the equip- NOTICE ment. ☞ Transport the pump at the provided handle. 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. -
Page 4: Ambient Conditions
No. 47800-2-02-5 page 4 of 24 Comply with maximum permissible pressures at inlet and outlet and pressure • differences, see section ”Technical data”. Do not operate the pump with overpres- sure at the inlet. • Check that mains voltage and current conform with the equipment (see rating plate). -
Page 5: Operating Conditions
No. 47800-2-02-5 page 5 of 24 Operating conditions ➨ The pumps have no approval for operation in or for pumping of potentially explosive atmospheres. ➨ The pumps are not suitable to pump unstable substances and substances which react explosively under impact (mechanical stress) and/or when being exposed to elevated temperatures without air, self inflammable substances,... - Page 6 No. 47800-2-02-5 page 6 of 24 • 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.
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Page 7: Maintenance And Repair
No. 47800-2-02-5 page 7 of 24 Maintenance and repair 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 de- pending strongly on the operation conditions like ambient temperature, humidity or load. -
Page 8: Technical Data
No. 47800-2-02-5 page 8 of 24 Technical data Type MD 4U NT Maximum pumping speed 50/60 Hz (ISO 21360) 3.8 / 4.3 Ultimate vacuum (absolute) without gas ballast mbar Ultimate vacuum (absolute) with gas ballast mbar Maximum permissible inlet pressure (absolute) -
Page 9: Gas Inlet Temperatures
No. 47800-2-02-5 page 9 of 24 Gas inlet temperatures Permitted range of gas Operating condition Inlet pressure temperatures at inlet Continuous operation > 100 mbar (high gas load) +10°C to +40°C Continuous operation < 100 mbar (low gas load) 0°C to +60°C Short-time (<... - Page 10 No. 47800-2-02-5 page 10 of 24 MD 4U NT 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.
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Page 11: Use And Operation
No. 47800-2-02-5 page 11 of 24 Use and operation Installing in a vacuum system • Connection lines at the pump inlet have to be gas tight. Particles and dust must not be aspirated, the user has to provide appropriate filters if necessary. The user must ensure their suitability concerning gas flow, chemical resistance and safe- ness against clogging prior to use. -
Page 12: During Operation
No. 47800-2-02-5 page 12 of 24 • The gas outlet must not be blocked. The exhaust pipeline has always to be free and pressureless to enable an unhindered discharge of gases. • If necessary connect the exhaust to a suitable treatment plant to prevent the dis- charge of dangerous gases and vapours to the surrounding atmosphere. -
Page 13: Attention: Important Notes Regarding The Use Of Gas Ballast
No. 47800-2-02-5 page 13 of 24 Attention: Important notes regarding the use of gas ballast ➨ When using air rather than inert gas, risk of significant damage to equipment and/ or facilities, risk of personal injury or even loss of life exists due to the formation of hazardous and/or explosive mixtures if air and pumped media react inside or at the outlet of the pump. -
Page 14: Troubleshooting
No. 47800-2-02-5 page 14 of 24 Troubleshooting Fault Possible cause Remedy ❑ Pump does not start or ➨ ✔ Mains not plugged in, electri- Plug in mains. Check fuse. stops immediately. cal supply failure? ➨ ✔ Device fuse blown? Identify cause of failure. Re- place device fuse. -
Page 15: Replacing Diaphragms And Valves
No. 47800-2-02-5 page 15 of 24 Replacing diaphragms and valves All bearings are encapsulated and are filled with long-life lubricant. Under normal NOTICE operating conditions, the pump is maintenance free. The valves and 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 16: Cleaning And Inspecting The Pump Heads
No. 47800-2-02-5 page 16 of 24 Cleaning and inspecting the pump heads ➨ Position the pump on the side. Support pump appropriately if necessary. Open only one side of the pump at a time. ➨ To check the valves use a hex key to remove eight socket- head screws from the pump head and remove the housing cover with head cover, valves and O-rings. -
Page 17: Replacing The Diaphragm
No. 47800-2-02-5 page 17 of 24 ☞ Underneath the pump there is a connecting tube 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 connecting tube becomes detached as well. -
Page 18: Assembling Pump Heads
No. 47800-2-02-5 page 18 of 24 Assembling pump heads ➨ Bring the diaphragms into a position in which they are in contact with the housing and centred with respect to the bore. ➨ When mounting the housing cover, install the connecting tube (1) under the pump between the two housing covers. -
Page 19: Replacing The Device Fuse
No. 47800-2-02-5 page 19 of 24 Replacing the device fuse The replacing of the device fuse has to be carried out by an electrician. Switch off the pump and disconnect it from mains before opening the terminal box. After dis- connecting from mains wait two minutes to allow the capacitors to discharge. -
Page 20: Notes On Return To The Factory
No. 47800-2-02-5 page 20 of 24 Notes on return to the factory Repair - return NOTICE Safety and health of our staff, laws and regulations regarding the handling of dan- gerous goods, occupational health and safety regulations and regulations regarding safe disposal of waste require that for all pumps and other products the “Check sheet for repair“... -
Page 21: Check Sheet For Repair
（３）Ambient temperature： （４）Operational pressure： ６．Miserenious information. Please describe any information if necessary. ７．Send to Ulvac Kiko,Inc. CS Center. Service Dep. 【 Address 】 1-10-4,Kita-shinyokohama,Kohoku-ku, Yokohama,Kanagawa-ken,223-0059,JAPAN TEL:045-533-0509 FAX:045-533-0512 ※Use this paper by recopying for every information. When sending your information without this check sheet, repairing may not be acceptable. - Page 22 No. 47800-2-02-5 page 22 of 24 EC Declaration of Conformity ULVAC KIKO,Inc. 291-7 Chausubaru, Saito-city, Miyazaki, 881-0037. Japan In accordance with the following Directive: 2006/42/EC Machinery Directive 2014/30/EU Electromagnetic Compatibility Directive 2011/65/EU RoHS declare under our sole responsibility that the product,...
- Page 23 1-10-4, Kitashinyokohama, Kohoku-ku, Yokohama-shi, Kanagawa Prf. Japan TEL(81)45-533-0509 FAX(81)45-533-0512 Miyazaki Branch 291-7 Chausubaru, Saito-shi, Miyazaki Prf. Japan TEL(81)983-42-4135 FAX(81)983-43-2159 ULVAC GmbH Parkring 11, 85748, Garching, Germany TEL(49)89-96-0909-0 FAX(49)89-96-0909-96 HEAD OFFICE/ Miyazaki Plant 291-7 Chausubaru, Saito-shi, Miyazaki Prf. Japan TEL : (81)983-42-1411 FAX : (81) 983-42-1422 Documents are only to be used and distributed completely and unchanged.
- Page 24 No. 47800-2-02-5 page 24 of 24 20901397 / 26/01/2018 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.
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