Table of Contents
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LEYBOLD VACUUM
Vacuum Solutions
Application Support
Service
GA 03.108/14.02
RUVAC WS/WSU
251/501/1001/2001
Roots pump with mineral oil,
synthetic oil or PFPE filling
Cat.-No.
101 83
117 22/32/42/52
117 23/33/43/53
117 27/37/47/57
117 28/38
118 33/43/53
150 44/95/96
167 007
917 48
155 000
Operating Instructions
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Table of Contents
Related Manuals for Leybold vacuum RUVAC WS 251
Summary of Contents for Leybold vacuum RUVAC WS 251
- Page 1 LEYBOLD VACUUM Vacuum Solutions Application Support Service GA 03.108/14.02 RUVAC WS/WSU 251/501/1001/2001 Roots pump with mineral oil, synthetic oil or PFPE filling Cat.-No. 101 83 117 22/32/42/52 117 23/33/43/53 117 27/37/47/57 117 28/38 118 33/43/53 150 44/95/96 167 007 917 48...
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Page 2: Table Of Contents
Contents Contents Warning Indicates procedures that must be strictly observed to prevent hazards to persons. Page IMPORTANT SAFETY CONSIDERATIONS . .4 Description ......6 Design and function . - Page 3 Contents Leybold-Service If a pump is returned to Leybold, indicate whether the pump free of substances damaging to health or whether it is contaminated. If it is contaminated also indicate the nature of the hazard. Leybold must return any pumps without a „Declaration of Contamination“...
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Page 4: Important Safety Considerations
Consult local, state, and national agencies regarding specific requirements and regulations. Address any further safety, operation and/or maintenance que- stions to your nearest Leybold Vacuum office. Warning Failure to observe the following precautions could result in serious personal injury. - Page 5 Safety considerations Warning • The noise level produced by the RUVAC is about 63 to 72 dB(A). Make sure that suitable protection measures are taken to protect the hearing. • Before pumping oxygen (or other highly reactive gases) at concentrations exceeding the concentration in the atmosphere (>...
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Page 6: Description
Description Key to Fig. 1 1 Intake flange 2 Pumping chamber 3 Casing 4 Impeller 5 Discharge flange Fig. 1 Schematic cross-section of a Roots pump (vertical flow) Fig. 2 Functional diagram of a Roots pump (vertical flow) 1 Description 1.1 Design and Function In position IV, this volume is opened to the discharge The RUVAC WS and RUVAC WSU are Roots pumps dri-... - Page 7 Description Key to Fig. 3 1 Gearwheels Fan cowl 2 Bearings 3 Impeller seals 10 Drive shaft 4 Impellers 11 Centrifugal disc lubricator 5 Driven impeller shaft 12 Equalisation passage 6 Stator 13 Intake port 7 Can 14 Centrifugal disc lubricator Fig.
- Page 8 Description Key to Fig. 4 1 Pressure balance line 2 Pressure balance valve Fig. 4 Schematic diagram of a Roots pump with pressure balance line 1.1.4 Lubricants Incorporated in the motor’s stator winding is a thermal switch which turns off the pump when the motor tempe- RUVAC WS/WSU pumps are, as standard, prepared eit- rature is too high.
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Page 9: Standard Specification
Description 1.2 Standard Specification RUVAC WS/WSUs are supplied for vertical flow as stan- Pumps with Cat. Nos. beginning with 117... are supplied dard unless you specifically request horizontal flow. with a sealing disc, a blank flange and an ISO-K collar flange fitted with the required number of screws. -
Page 10: Technical Data
Description 1.3 Technical Data (SI units) RUVAC WS / WSU 1001 2001 1000 2050 Nominal pumping speed · h Maximum pumping speed (at a pumping 1850 · h speed for the backing pump of) · h Possible cut-in pressure (RUVAC WS at a mbar pumping speed for the backing pump of) ·... -
Page 11: Accessories
Description Voltage ranges for the canned motors of the RUVAC WS/WSU pumps Nominal power / Nominal current at Nominal power / Nominal current at 50 Hz 60 Hz Pump model 200 V 230 V 400 V 200-208 V 265 V 460 V WS 251 WSU 251... -
Page 12: Transportation And Storage
Transportation and storage 2 Transportation and Storage Roots pumps are heavy machines (> 70 kg) made of Caution When shelving the pump for a longer period cast iron and thus should only be lifted using suitable lif- of time you should seal off the flanges of the ting equipment tied to the eye (8/3) provided for this pur- pump with a piece of foil or the cardboard pose. -
Page 13: Installation And Connection
Installation and connection 3.2 Filling in of the Lubricants Caution When operating the pump with PFPE, the correct oil level must be as shown in Fig. 8. If the oil level is too low, the bearings and The lubricant needed for running the pump is supplied in gearwheels are not lubricated adequately;... -
Page 14: Electrical Connections
Installation and connection 3.3 Electrical Connections An arrow (8/7) on the motor flange shows the correct direction of rotation for the impeller connected to the motor shaft. To check rotation, switch on the motor brief- Warning Disconnect the mains before doing work on ly and observe the direction of impeller rotation through the wiring. - Page 15 Installation and connection Various connection options for different mains power supplies. Motor junction box 3 x 230 V 50 Hz 3 x 400 V 50 Hz 3 x 265 V 60 Hz 3 x 460 V 60 Hz Caution: for Cat.-No. 150 44 - 230V/50/60 Hz Caution: for Cat.-No.
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Page 16: Connection Of The Flanges
Installation and connection The threshold of pressure switch PS 115 is freely Caution The RUVAC WS pumps is vented with nitro- adjustable. gen. Only remove the packing flanges befo- re immediate connection. The contact amplifier is identical for all pressure switches. -
Page 17: Operation
Operation 4 Operation 4.1 Start-up With small vacuum vessels, the maximum permissible pressure differential can be briefly exceeded (max. 3 min) upon start-up. If a pressure switch has been instal- Check the pump motor’s direction of rotation (see Sec- led, do not set it to this higher pressure because it will fail tion 3.3). -
Page 18: Shutdown And Storage
Operation 4.3 Shutdown and Storage 4.4 Changing from Vertical to Horizontal Flow Caution We recommend to keep the RUVAC WS with a PFPE filling running even during pro- The RUVAC WS/WSUs are supplied as standard for ver- longed intervals (e. g. over night) with the tical flow unless you specifically request horizontal flow. -
Page 19: Maintenance
Maintenance 5 Maintenance 5.2 Exchanging the Lubricant 5.1 Safety Information Before pumping oxygen (or other highly Warning reactive gases) at concentrations excee- The safety information given in the following applies to all ding the concentration in the atmosphere maintenance work. (>... -
Page 20: Cleaning The Fan Cowl And The Cooling Fins
Maintenance 5.3 Cleaning the Fan Cowl Caution Mineral oils, synthetic oils and PFPE do not mix. and the Cooling Fins Please consult us if you intend to run the pump with other oils or special lubricants. Warning Observe all safety information provided in At vertical flow the correct oil level is in the center of the Section 5.1. -
Page 21: Cleaning The Pumping Chamber
Maintenance 5.5 Cleaning the Pumping 5.6 Cleaning the Valve of the Chamber Pressure Balance Line Warning Warning Observe all safety information provided in Observe all safety information provided in Section 5.1. Section 5.1. Under dirty operating conditions, contaminants may be Remove the screws and take off the cover (12/1) with deposited in the pumping chamber or on the impellers. -
Page 22: Leybold Service
Maintenance 5.7 Leybold Service If a pump is returned to LEYBOLD, indicate whether the pump free of substances damaging to health or whether it is contaminated. If it is contaminated also indicate the nature of the hazard. For this you must use a form which has been prepared by us which we will provide upon request. -
Page 23: Troubleshooting
Troubleshooting 6 Troubleshooting Fault Possible cause Remedy Repair* Pump does not Motor is connected incorrectly. Connect the motor correctly. start. Thermal switch or motor stator is malfunctioning. Leybold service. Pressure switch is malfunctioning. Replace the pressure switch. Lubricant is too viscous. Change the lubricant or warm the lubricant and the pump. -
Page 24: Eec Declaration Of Conformity
EEC Declaration of Conformity We - LEYBOLD Vacuum GmbH - herewith declare that The products conform to the following directives: the products defined below meet the basic requirements • EC Directive on Machinery (98/37/EG) regarding safety and health of the relevant EEC direc- tives by design, type and the versions which are brought •... - Page 25 GA 03.108/14.02 - 01/03...
- Page 26 Sales Net worldwide AMERICA EUROPE ASIA USA: Deutschland: Groß-Britannien/Irland: Volksrepublik China: Singapore: LEYBOLD VACUUM USA LEYBOLD VAKUUM LEYBOLD LTD. LEYBOLD (Tianjin) BALZERS and LEYBOLD 5700 Mellon Road GmbH Waterside Way, VACUUM EQUIPMENT Singapore Pte. Ltd. Export, PA 15632 Bonner Straße 498 Plough Lane MANUFACTURING Co.,...
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