Ulvac DTU-20 Instruction Manual
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Ulvac DTU-20 Instruction Manual

Diaphragm dry vacuum pump
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No. 29700-2-04-8
DIAPHRAGM DRY VACUUM PUMP
INSTRUCTION MANUAL
MODEL DTU-20
Prior to use
For safe and efficient use of this pump, please read this manual
carefully before operation.
After reading the manual, keep it in your file for future reference.
Specifications in this manual are subject to change without notice
due to future improvement.
ULVAC KIKO, Inc.

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  • Page 1 No. 29700-2-04-8 DIAPHRAGM DRY VACUUM PUMP INSTRUCTION MANUAL MODEL DTU-20 Prior to use For safe and efficient use of this pump, please read this manual carefully before operation. After reading the manual, keep it in your file for future reference.

  • Page 2: Table Of Contents

    Contents Pages with a shaded background are those, which contain items related to safety. Before Using the Equipment ..........01 Checks When Opening Packaging ..........02 Using the Pump Safely ..........03 Safety icons ..........03 Cautions for Safety in Use ..........
  • Page 3 ..........14 Warranty ..........14 Usage Status Check Sheet Figures and Tables Fig.1 DTU-20 Dimensions ..........3 Fig.2 Change region of the voltage and frequency ........4 Fig.3 Example of Piping Used When Evacuating a Vessel ....... 5 Fig.4 Exploded view ..........

  • Page 4: Before Using The Equipment

    Before Using the Equipment Thank you for purchasing this product. Your custom is very much appreciated. This pump is designed solely for vacuum discharge, and may malfunction or cause accidents if not handled appropriately. Read the manual thoroughly, and pay due attention to inspections, maintenance, and safety.
  • Page 5 Checks When Opening Packaging Check the following after opening the packaging. (1) Is the product as you requested? (2) Are the accessories and necessary parts included? Standard accessories ・User’s manual -------------------- ×1 ・Inlet and outlet caps (fitted to inlet and outlet) -------------------- ×2 〈In case motor specification is 100V〉...

  • Page 6: Using The Pump Safely

    Using the Pump Safely To ensure that the pump is handled correctly, read this section thoroughly before use. This manual and the warning labels on the pump include safety icons as an aid to understanding safety requirements. These safety icons warn the operator and others of possible dangers and damage and should always be followed.
  • Page 7 Warning Installation (1) Do not use the pump in an explosive atmosphere. Such use may result in injury and fire. (2) Ensure that there are no inflammable materials such as solvents in the vicinity when using the pump. (3) Ensure that the pump is freely ventilated to prevent overheating, which may result in fire or burns.
  • Page 8 Caution Installation The fine clearances used in this pump require that the following conditions be satisfied during storage, installation, and operation. 1. Ambient temperature of 5~40°C and maximum relative humidity of 85% during operati 2. Equal to or less than meters above the sea level 1000m storage and operation. 3.
  • Page 9 Corrosion-resistant plastic is used in the external covering of the DTU-20, however it is not resistant to all chemicals. Ensure that the following chemicals do not come in contact with the pump. Any chemical, including the following, which comes into contact with the pump should be wiped off immediately.
  • Page 10 Note (11) Ingestion of rubbish and dust in the air entering the pump will interfere with its proper function. If the air is likely to contain rubbish or dust, a filter should be fitted to the inlet to protect the pump. (12) Ducting should always be fitted to the pump outlet if toxic corrosive gases, or steam, enters the pump.

  • Page 11: Product Outline

    (4) Corrosion-resistant plastic is used in the external covering of the DTU-20 however it is not resistant to all chemicals. Ensure that the following chemicals do not come in contact with the pump. Any chemical, including the following, which comes into contact with the pump should be wiped off immediately.

  • Page 12: Checks When Opening Packaging

    1.3 Thermal Protector 1) This pump is fitted with an automatic reset thermal protector for overload protection. This device shuts off the motor power supply circuit automatically to prevent burn-out if the motor temperature rises due to a pump fault which prevents rotation, or if load becomes excessive. 2) It is recommended that additional protective devices (eg.

  • Page 13: Dimensional Drawing

    2. Dimensional Drawing ※・When motor specifications are 115V, 200V, 220V and 230V, a cable termination is “loose end”. Fig.1 DTU-20 Dimensions 3. Installation and Storage 3.1 Cautions for Installation and Storage See Warning Warning (1)(2)(3)(5)(6)(7)(8)(9)(10)(11)(12)(13)(15), P04 See Caution (1)(2)(3), P05...

  • Page 14: Location

    Environment free of corrosive or explosive gas. Not subject to direct sunlight. No danger of fire. Maximum ambient temperature of 40°C during assembly of pump. Free of soot and oil. Free of splashing or flooding. Keep it indoor ventilated. When installing the pump, avoid mounting a vacuum pump directly on the base. Employ anti-vibration rubber between the base and the vacuum pump.

  • Page 15: Checking Operation After Installation

    3.6 Checking Operation After Installation 1) Remove the rubber caps from the inlet and outlet. 2) Check that the pump switch is OFF, and insert the plug into the 100 V wall socket. Note: Ensure that the power plug is sufficient for the rated voltage and current. 3) Turn the switch ON and check that gas is being drawn into the inlet.

  • Page 16: Operation Of The Thermal Protector

    4.2 Operation of the Thermal Protector 1) When the thermal protector operates, switch the pump power supply OFF, remove the power cord from the outlet, and contact the manufacturer. Note that the pump will be very hot and should not be touched. 2) The pump operates automatically when temperature drops.

  • Page 17: Maintenance, Inspection, And Repair

    6. Maintenance, Inspection, and Repair 6.1. Cautions for Maintenance, Inspection, and Repair Danger See Danger (3), P03 Warning See Warning (4)(18)(19), P04 Caution See Caution (10)(11)(12)(13), P06 See Note (13), P07 Note Maintenance and repair by the customer’s repair technician is limited to the following procedures. Do not undertake other repairs, or make modifications other than the standard options supplied by the manufacturer.

  • Page 18: Replacing And Cleaning Consumables

    Note that the average life for a component varies with the conditions of use. Always follow 4.1 Cautions for Operation, and remember that life is extended by running the pump at minimal load (running the pump at minimal load is operation at the achieved pressure (inlet closed)).
  • Page 19 Prepare the following tools and refer to drawing when working replacement. When having difficulty in preparing the tools, ask Ulvac Service Section. Tools to be used: 1, Phillips screwdriver: No. 2 2, Torque driver (plus) set tightening torque to 4N∙m 3, Spanner: Opposite sides 13 mm (0.5") (thickness lower than 5.5 mm (0.2")),...

  • Page 20: Replacement Of Diaphragms And Valves

    1) Replacement of Diaphragm and Valves. It is recommended to replace all sheets at the same time. Caution : When working on replacement, wear gloves always. There is risk of injury. (2) Valve retainer cover (Upper and lower) (5) Handle (3) Valve retainer (Upper and lower) (4) Connecting pipe...

  • Page 21: Fig.4 Exploded View

    Mount upper level valve in orientation as shown in right drawing. Upper level pump head mounting direction (Notch direction) Mount the lower level valve in orientation as shown in left drawing Lower level pump head mounting direction (Notch direction) Open hole valve Fig.

  • Page 22: Replacement Of Bearing

    Check the procedure from the item 1. 21, Before turning the switch ON, check the work, particularly the area related to the power supply, again and start the pump operation. 2) Replacement of Bearing Request Ulvac Service Section.

  • Page 23: Troubleshooting List

    6.5 Troubleshooting List Table.4 Troubleshooting List Problem Causes Solutions Reference (1) Not connected to power supply. (1) Connect power supply. (2) Switch is OFF. (2) Set switch to I. (3) Ensure that voltage variation is within (3) Problem with power supply voltage. +/-10%.

  • Page 24: In Conclusion

    7. In Conclusion This manual contains only general information about pump operation. Therefore, if you come up with any question or trouble, contact our representative or ULVAC KIKO. Warranty (1) The warranty for this pump (this equipment) extends for a period of one year from the date of shipment.

  • Page 25: Usage Status Check Sheet

    Usage Status Check Sheet (for use in Instruction Manual) * For the purpose of safety control of repair personnel, fill in within the heavy line frame and attach the sheet to the item of which repair is requested. * In case this sheet were not attached or filled in, your request of repair and service may not be accepted.
  • Page 26 No.62400-2-02-10 アルバック機工株式会社 https://ulvac-kiko.com 製品情報・サービス拠点・お問い合わせはこちらから https://showcase.ulvac.co.jp/ja/ 株式会社アルバック コンポーネント事業本部 営業部 〒253-8543 神奈川県茅ヶ崎市萩園２５００ TEL:0467-89-2416 ULVAC KIKO,Inc. https://ulvac-kiko.com/en Please contact us for products, Service Base or other Inquiries from here. https://showcase.ulvac.co.jp/en/ ULVAC,Inc. Components Business HQ 2500 Hagisono, Chigasaki, Kanagawa, 253-8543, Japan TEL:+81-467-89-2261...

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