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RUVAC WS / WSU
251/501/1001/2001
Roots vacuum pump with mineral oil,
synthetic oil or PFPE-filling
Installation and Operating Instructions GA 03108_002_C1
Part Numbers
11375
155007
155009
11722
155042
11723
155043
11727
155053
11728
155054
11732
155066
11733
155110
11737
155111
11738
155112
11742
155113
11743
155114
11747
11752
167007
11753
167026
11757
167042
167043
11833
167044
11843
167056
11853
167097
12860
167129V
167173V
15047
167175V
15095
167187V
15096
167190V
7850009
7850010
20003123
7850011V
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Related Manuals for LEYBOLD RUVAC WS251
Summary of Contents for LEYBOLD RUVAC WS251
- Page 1 RUVAC WS / WSU 251/501/1001/2001 Roots vacuum pump with mineral oil, synthetic oil or PFPE-filling Installation and Operating Instructions GA 03108_002_C1 Part Numbers 11375 155007 155009 11722 155042 11723 155043 11727 155053 11728 155054 11732 155066 11733 155110 11737 155111 11738 155112 11742...
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Page 2: Table Of Contents
Ordering Information 1.4.1 Pumps 1.4.2 Accessories Transport and Storage Installation Installation 3.1.1 Filling in of the Lubricants Conforming Utilisation 3.2.1 Non-conforming Utilisation Connecting the Cooling Water 3.3.1 Water Quality Electrical Connection Connecting the Flanges GA03108_002_C1 - 04/2018 - © Leybold... - Page 3 Cleaning the Valve of the Pressure Balance Line Service at Leybold Maintenance Schedule Troubleshooting Wearing and Original Spare Parts Waste Disposal EC Declaration of Conformity Declaration of Contamination These Installation and Operating Instructions are the original instructions. GA03108_002_C1 - 04/2018 - © Leybold...
- Page 4 Operating Instructions and follow the information so as to ensure optimum and safe working right from the start. The Leybold RUVAC WS/WSU has been designed for safe and efficient operation when used properly and in accordance with these Operating Instructions. It is the responsibility of the user to carefully read and strictly observe all safety precautions described in this Section and throughout the Operating Instructions.
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Page 5: Important Safety Information
The crane eyes of the RUVAC pumps must not be used to lift any pump combinations (Roots + backing pump). Exceptions are allowed only with approval from Leybold. Secure the pump by the crane at the intended eyes until a firm connection has been established with the backing pump or a corresponding suspension has been installed. -
Page 6: Electrical Hazards
The pumps must only be operated at the permitted speeds. Especially when using frequency converters which have not been specifically approved by Leybold, you need to ensure an effective protection against overspeeding. Electrical Hazards Potentially lethal voltages are present at the mains connections. -
Page 7: Thermal Hazards
Since not all application related hazards for vacuum systems can be described in detail in these Operating Instructions, Leybold has availa- ble a separate document (Safety Booklet) in which the hazards and general safety concepts for design, operation and maintenance of vac- uum systems are explained. - Page 8 RUVAC pumps with toxic and/or aggressive gases, it is imperative that you consult your local Leybold office. Leybold is not in a position to perform servicing (repairs) and waste disposal of radioactively contaminated pumps. Both needs to be ensured from the side of the user.
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Page 9: Ignition Risk
When the pump is being started with open flanges, a noise level which is detrimental to health will be produced. If such operation is unavoida- ble, then it is mandatory to wear hearing protectors (ear muffs). GA03108_002_C1 - 04/2018 - © Leybold... -
Page 10: Danger Of Pump Damage
Do not use the pump for applications that produce abrasive or adhe- NOTICE sive powders or condensable vapors that can leave adhesive or high viscosity deposits. Please contact Leybold Sales for selecting the right separator. Vapors which condense upon being compressed within the pump to liquids must be avoided when their vapor pressure exceeds the vapor tolerance of the pump. -
Page 11: Description
“8” and are synchronised by a toothed gear so that they move past each other and the casing without contact but with a small clearance. The principle of operation is explained in fig. 1.2. GA03108_002_C1 - 04/2018 - © Leybold... - Page 12 50 Hz). Thus a relatively high pumping speed is attained with small pumps. The pressure differential and compression ratio between the intake and discharge sides are limited on Roots pumps. If the allowable pressure differential is exceeded, the pump overheats. GA03108_002_C1 - 04/2018 - © Leybold...
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Page 13: Design
The pump section of the RUVAC WS/WSU is air cooled. The air flow cooling the motor and the pump is produced by a fan (1.3/9) having its own drive motor under the fan cowl (1.3/8). GA03108_002_C1 - 04/2018 - © Leybold... -
Page 14: Pressure Balance Line
In the case of pressure bursts this prevents the valve from making contact at the cover. This reduces valve noise and increases its dura- bility. The pressure balance valve will not protect the pump from thermal over- NOTICE load if opened continuously. GA03108_002_C1 - 04/2018 - © Leybold... -
Page 15: Lubricants
If you want to change the type of lubricant Leybold should do the change. In case of operation with mineral oil we recommend our vacuum pump oil LVO 100. - Page 16 Total pressure Partial pressure Fig. 1.6 Pumping speed characteristics for operation at 50 Hz Fig. 1.7 Power consumption of the RUVAC WS/WSU The ultimate pressure (P ) depends on the backing pump used. ult. GA03108_002_C1 - 04/2018 - © Leybold...
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Page 17: Technical Data
The minimum permissible speed is relevant for the oil lubrication system of bearings and gears and has to be considered if the speed is constant for more than 1 hour. Running the pump at less than the minimum speed for more than 1 hour can cause damage to the pump due to a lack of lubrication. GA03108_002_C1 - 04/2018 - © Leybold... -
Page 18: Voltage Ranges For The Canned Motors
(230 V, 50 Hz and 265 V, 60 Hz) as otherwise the fan will be damaged, especially so when using a fre- quency converter. In the case of deviating voltages you must use a trans- former. GA03108_002_C1 - 04/2018 - © Leybold... -
Page 19: Limitations Of Use For Frequency Converter Operation
Rated frequency f 60 Hz Minimum frequency f 0-5 Hz WS(U) 251 5.5 A 3.2 A WS(U) 501 10 A 5.8 A WS(U) 1001 14.7 A 8.5 A WS(U) 2001 26 A 15 A GA03108_002_C1 - 04/2018 - © Leybold... -
Page 20: Maximum Pressure Difference
Do not allow the WSU pumps to operate for longer periods of time at high pressures. The bypass line has been optimised for rapid pumpdowns and has not been designed to protect the pump at higher pressures! GA03108_002_C1 - 04/2018 - © Leybold... - Page 21 1:5 - 1:8 - 1:1 - 1:5 - 1:8 - 1:1 - 1:5 - 1:8 - 1:15 1:15 1:15 1:15 Continuous operation Duty cycle 50% Duty cycle 25% Pumpdown from atmosphere (< 2 min) GA03108_002_C1 - 04/2018 - © Leybold...
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Page 22: Ordering Information
ACE shock absorber WSU 1001 H PFPE 155112* ACE shock absorber WSU 1001 W PFPE 155043* water cooled motor, special intake screen WSU 1001 H LVO 210 167043 ACE shock absorber, horizontal flow, supplied without oil GA03108_002_C1 - 04/2018 - © Leybold... - Page 23 100 Hz operation possible WSU 2001 H PFPE 167129V ACE shock absorber *special models for single customers, order only possible after consultation with Leybold The RUVAC WS/WSU 251, 501, 1001 can all be operated with 100 Hz GA03108_002_C1 - 04/2018 - © Leybold...
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Page 24: Accessories
EK 110 002 673 EK 110 002 674 EK 110 002 675 EK 110 002 676 EK 110 002 677 EK 110 002 678 RUVAC WS/WSU(H) Seal kit 194 62 194 66 194 70 194 74 GA03108_002_C1 - 04/2018 - © Leybold... -
Page 25: Transport And Storage
The pump should be transported and stored in a horizontal position (5° max. tilt). Otherwise there is the danger that oil from the side chambers may enter the pump chamber, even before the pump is filled with oil for the first time. GA03108_002_C1 - 04/2018 - © Leybold... - Page 26 Section 4.3 Removing from Service. You may use a water glycol mixture of up to 30 %. Temperature (only for storage without cooling water!) -20 °C to +60 °C Storage site Maximum atmospheric humidity 95 %, non-condensing GA03108_002_C1 - 04/2018 - © Leybold...
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Page 27: Installation
Special oil for operation at temperatures below 12 °C is available upon request. Install the pumps only in rooms with a roof. Motor and fan cowl are rated NOTICE as IP 20 and are thus not protected against drip water and condensing water. GA03108_002_C1 - 04/2018 - © Leybold... -
Page 28: Filling In Of The Lubricants
Clean the oil-fill port and screw the plug back in using a gasket which is in perfect condition. The oil-fill port must be sealed air-tight. Entry of air from the outside may cause oil-containing gas to enter the pumping chamber via the impellers seals. GA03108_002_C1 - 04/2018 - © Leybold... - Page 29 Fig. 3.5 WS/U 2001 PFPE Fig. 3.2 - 3.5 Oil level in the oil level viewing glass depending on the size of the pump and type of oil. GA03108_002_C1 - 04/2018 - © Leybold...
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Page 30: Conforming Utilisation
They are employed to increase the pumping speed of backing pumps below 10-100 mbar by a very significant factor or for the purpose of attaining a lower ultimate pressure. Accessories which have not been specified by Leybold may only be used after approval by Leybold. 3.2.1 Non-conforming Utilisation... - Page 31 Installation The non-conforming utilisation of pump and accessories may result in WARNING severe injury or damage to the components. GA03108_002_C1 - 04/2018 - © Leybold...
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Page 32: Connecting The Cooling Water
If there is the danger of frost, you may use a water glycol mixture of up to 30 %. DS water (softened or fully desalinated water) can be used for cooling the pump, if the pH value corresponds to the range indicated above. GA03108_002_C1 - 04/2018 - © Leybold... -
Page 33: Electrical Connection
RUVAC is turning in the wrong direction. Then rewire as described above. The built-in fan is driven by a separate single-phase motor and may thus not be used to determine the direction of rotation of the pump. GA03108_002_C1 - 04/2018 - © Leybold... - Page 34 The RUVAC can be automatically switched on and off via a contactor using a pressure switch and the contact amplifier SV 110. The pressure switch PS 115 is set by Leybold to a fixed value. Upon ordering the pressure switch please state the desired switch-on pressure.
- Page 35 The above control circuit is designed so S2 Switch contact that the Roots pump cuts in only if the Fuse, control circuit pressure drops below the set pressure level Q1 Motor protection switch (B1). Fig. 3.6 Electrical connection GA03108_002_C1 - 04/2018 - © Leybold...
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Page 36: Connecting The Flanges
Even with clean vacuum processes, contaminants from the system may enter upon initial start-up. Depending on the operating conditions, the intake screen may reduce the pumping speed of the pump. GA03108_002_C1 - 04/2018 - © Leybold... -
Page 37: Operation
= — — — — — — — — — — — — — — — 20 mbar 100 m · h 5 - 1 at the corresponding operating frequency at 50 Hz operation GA03108_002_C1 - 04/2018 - © Leybold... -
Page 38: Operation
Note the labels on the pump. Never open the oil-fill or oil-drain screw in the presence of a vacuum or while the pump is running. There is the danger that oil may squirt out. GA03108_002_C1 - 04/2018 - © Leybold... -
Page 39: Shutdown And Storage
If a pressure switch has been installed, turn it so that it again points vertically upwards. The valve in the pressure balance line of the RUVAC WSU is designed to work with both vertical and horizontal flow of the pump. GA03108_002_C1 - 04/2018 - © Leybold... -
Page 40: Maintenance
Advanced repair work not described here should be left to the Leybold service. We would like to point out that Leybold offers training courses on the mainte- nance, repair, and troubleshooting of RUVAC pumps. Further details are available on request. -
Page 41: Exchanging The Lubricant
To simplify the process and also for safety reasons we recommend the use of our oil-drain facility. Unscrew the oil-drain plugs (5.1/2) and the oil-fill plug (5.1/3) and drain the oil. GA03108_002_C1 - 04/2018 - © Leybold... -
Page 42: Cleaning The Fan Cowl And The Cooling Fins
In order to ensure a sufficient air flow for the motor and the pump’s casing, the grid of the fan cowl must be cleaned with a clean brush when contami- nated. Any coarse dirt must be removed from the fins on the motor and the pump. GA03108_002_C1 - 04/2018 - © Leybold... -
Page 43: Cleaning The Intake Screen
They should move freely and without any resistance. Generally, the Roots pump does not need to be disassembled. If necessa- ry, this should only be done by our after-sales service. GA03108_002_C1 - 04/2018 - © Leybold... -
Page 44: Cleaning The Valve Of The Pressure Balance Line
If the bushing (5.2/3) is damaged, pull it out of the valve disk and replace it. Clean all parts or replace them if necessary. Reassemble in the reverse sequence. When doing so, check the O-rings for leak-tightness and replace if found faulty. GA03108_002_C1 - 04/2018 - © Leybold... -
Page 45: Service At Leybold
Maintenance Service at Leybold If you send a pump to Leybold indicate whether the pump is free of sub- stances damaging to health or whether it is contaminated. If it is contaminated also indicate the nature of hazard. To do so, you must use a preprinted form which we shall send to you upon request. -
Page 46: Maintenance Schedule
Check leak tight- Quarter yearly ness of the cooling water connections Clean motor fan The cleaning intervals will depend on See Section 5.3. and cooling fins the ambient conditions. GA03108_002_C1 - 04/2018 - © Leybold... -
Page 47: Troubleshooting
Power consumpti- Like „Pump gets too hot“. Like malfunction „Pump gets too hot“. on of the motor is Incorrect mains voltage for the motor. Connect the motor to the correct mains 1.3/3.4 too high. voltage GA03108_002_C1 - 04/2018 - © Leybold... - Page 48 Connect motor correctly. speed. Vacuum pump system has a gas leak. Detect leak and seal it. Valve of the pressure balance line does not Clean the valve or have it repaired. close (WSU only). GA03108_002_C1 - 04/2018 - © Leybold...
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Page 49: Wearing And Original Spare Parts
Waste oil from vacuum pumps must not be mixed with other substances or materials. Waste oil from vacuum pumps (Leybold oils which are based on mineral oils) which are subject to normal wear and which are contaminated due to the influence of oxygen in the air, high temperatures or mechanical wear must be disposed of through the locally available waste oil disposal system. -
Page 50: Ec Declaration Of Conformity
EC Declaration of Conformity GA03108_002_C1 - 04/2018 - © Leybold... -
Page 51: Declaration Of Contamination
Person to contact: Calibration: Factory-calibr. Phone : Fax: Quality test certificate DIN 55350-18-4.2.1 End user: A. Description of the Leybold product: Failure description: Material description : Catalog number: Additional parts: Serial number: Application-Tool: Application- Process: Type of oil (ForeVacuum-Pumps) : B. - Page 52 Sales and Service Germany America Great Britain Leybold Japan Co., Ltd. Tsukuba Technical Service Center 1959, Kami-yokoba Leybold UK LTD. Leybold GmbH Tsukuba-shi, Ibaraki-shi 305-0854 Unit 9 Bonner Strasse 498 Japan Silverglade Business Park Leybold USA Inc. D-50968 Cologne Service:...
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