LEYBOLD RUVAC WS 251 Bedienungsanleitung

Part Numbers

155007

155009

155042

155043

155053

155054

155066

155110

155111

155112

155113

155114

167007

167026

167042

167043

167044

167056

167097

167129V

167173V

167175V

167187V

167190V

7850009

7850010

20003123

7850011V

11375

11722

11723

11727

11728

11732

11733

11737

11738

11742

11743

11747

11752

11753

11757

11833

11843

11853

12860

15047

15095

15096

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

Contents

2 GA03108_002_C1 - 04/2018 - © Leybold

Page

0 Important Safety Information 5

0.1 Mechanical Hazards 5

0.2 Electrical Hazards 6

0.3 Thermal Hazards 7

0.4 Hazards Caused by Materials and Substances 7

0.5 Ignition Risk 9

0.6 Noise Hazard 9

0.7 Danger of Pump Damage 10

1 Description 11

1.1 Design and Function 11

1.1.1 Principle of Operation 11

1.1.2 Design 13

1.1.3 Pressure Balance Line 14

1.1.4 Lubricants 15

1.2 Standard Specification 15

1.3 Technical Data 17

1.3.1 Voltage ranges for the canned motors 18

1.3.2 Limitations of use for frequency converter operation 19

1.3.3 Maximum Pressure Difference 20

1.4 Ordering Information 22

1.4.1 Pumps 22

1.4.2 Accessories 24

2 Transport and Storage 25

3 Installation 27

3.1 Installation 27

3.1.1 Filling in of the Lubricants 28

3.2 Conforming Utilisation 30

3.2.1 Non-conforming Utilisation 30

3.3 Connecting the Cooling Water 32

3.3.1 Water Quality 32

3.4 Electrical Connection 33

3.5 Connecting the Flanges 36

Contents

3GA03108_002_C1 - 04/2018 - © Leybold

These Installation and Operating Instructions are the original instructions.

4 Operation 37

4.1 Start-up 37

4.2 Operation 38

4.3 Shutdown and Storage 39

4.4 Changing from Vertical to Horizontal Flow 39

5 Maintenance 40

5.1 Safety Information 40

5.2 Exchanging the Lubricant 41

5.3 Cleaning the Fan Cowl and the Cooling Fins 42

5.4 Cleaning the Intake Screen 43

5.5 Cleaning the Pumping Chamber 43

5.6 Cleaning the Valve of the Pressure Balance Line 44

5.7 Service at Leybold 45

5.8 Maintenance Schedule 46

6 Troubleshooting 47

7 Wearing and Original Spare Parts 49

8 Waste Disposal 49

EC Declaration of Conformity 50

Declaration of Contamination 51

Safety Information

4 GA03108_002_C1 - 04/2018 - © Leybold

Obligation to Provide Information

Before installing and commissioning the pumps, carefully read these

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. The pump must only be operated in the proper

condition and under the conditions described in the Operating

Instructions. It must be operated and maintained by trained personnel only.

Consult local, state, and national agencies regarding specific requirements

and regulations. Address any further safety, operation and/or maintenance

questions to our nearest office.

DANGER indicates an imminently hazardous situation which, if not avoid-

ed, will result in death or serious injury.

WARNING indicates a potentially hazardous situation which, if not avoided,

could result in death or serious injury.

CAUTION indicates a potentially hazardous situation which, if not avoided,

could result in minor or moderate injury.

NOTICE is used to notify users of installation, operation, programming or

maintenance information that is important, but not hazard related.

Figures

The references to diagrams, e.g. (4.1/2) consist of Section No., consecutive

Fig. No. within the Section and the Item No. in the figure in that order.

We reserve the right to modify the design and the specified data.

The illustrations are not binding.

Retain the Operating Instructions for further use.

NOTICE

DANGER

WARNING

CAUTION

NOTICE

Safety Information

5GA03108_002_C1 - 04/2018 - © Leybold

0 Important Safety Information

0.1 Mechanical Hazards

1 Avoid exposing any part of the human body to the vacuum.

2 Even during standstill of the RUVAC it is dangerous to grasp into the

pump casing. Fingers can easily be squeezed between impellers due

to the high inertia of the parts. Please use caution when grasping into

the pump and make sure that the pump is secured against unwanted

rotation due to differential pressures.

3 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.

4 Do not operate the pump with any of the covers removed. Serious

injury may result.

5 Never operate the RUVAC without connected intake line or blank

flange at the intake.

6 Make sure that the gas flow from the discharge port is not blocked or

restricted in any way.

7 It is recommended to always only operate the RUVAC with a suitable

discharge line which is properly connected.

8 If discharged gases must be collected or contained, do not allow the

discharge line to become pressurized.

9 When moving the RUVAC always use the allowed means.

Two crane eyes are provided on this pump as standard.

10 Do not allow the ingestion of any objects (screws, nuts, washers, piec-

es of wire, etc.) through the intake port of the pump. The use of the

intake screen is strongly recommended. In case the pump is operated

without intake screen the operator has to make sure that no objects

can enter the pump through the intake port. Objects falling into the

pump can cause severe damage including leaks to atmosphere.

11 Should malfunctions affect the pump, seized impellers in particular

owing to hard deposits or foreign objects, the occurrence of leaks

affecting the housing cannot be ruled out. When pumping hazardous

gases the operator must ensure that the possibility of such an incident

is excluded, respectively that leaks at the pump casing will not pose a

hazard.

12 In order to prevent the destruction of equipment and injuries to the

operating personnel, we urgently recommend to follow the installation

instructions given in these Operating Instructions.

WARNING

Safety Information

6 GA03108_002_C1 - 04/2018 - © Leybold

13 First open the cooling water discharge and then the cooling water sup-

ply. Otherwise a water pressure can build up in the pump which is too

high. When shutting off the cooling water supply proceed in the

reverse order: first shut off the water supply and then shut off the

drain.

14 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.

0.2 Electrical Hazards

1 Potentially lethal voltages are present at the mains connections.

Before beginning with any maintenance or service work on the

RUVAC, disconnect the pump from all power supplies (lockout/tagout).

2 The electrical connections must only be provided by a trained electri-

cian as specified, for example, by the regulations EN 50110-1. Note

the national regulations of the country in which the equipment is in

being operated.

3 Before initial commissioning install a suitable motor protection switch

for the electric motor. Please note the information given in these

Operating Instructions and on the electric motor (terminal diagram).

4 Before commissioning, check the junction box to ensure that it is

undamaged, perform a visual inspection on the seals.

5 Install add-on parts (pressure switches, for example) without any ten-

sions and protect these against damage by impacts, for example.

6 Lay the connecting lines so that they cannot be damaged. Protect the

lines against humidity and contact with water. Avoid thermally stressing

the lines due to unfavourable laying. Observe the required standards

when designing and laying the electrical connections.

7 Provide strain relief for the connecting lines so that the plugs and the

line connectors are not exposed to excessively high mechanical stress-

es.

8 Lay the electric lines so that there is no risk of tripping over these.

9 The RUVAC must be integrated in the system control arrangement so

that the pump can not run-up automatically after it has been shut

down due to overtemperature of the motor. This applies equally to

emergency shut-down arrangements. After having determined the fault

cause, the pump should be switched on manually again.

10 The following applies to pumps being operated with a frequency con-

verter: after a mains power failure the pump will automatically start up

again once the power returns.

11 The temperature sensors (PTC, PTO) have basic insulation to the

motor winding. The operator must guarantee protection in the case of

indirect contact. For this purpose a monitoring device with galvanic

isolation can be provided from the temperature sensor to the pump

control, e.g. through thermistor machine protection devices by Eaton,

type EMT6-DBK.

WARNING

Safety Information

7GA03108_002_C1 - 04/2018 - © Leybold

0.3 Thermal Hazards

1 Hot surfaces, risk of suffering burns.

Under certain ambient conditions the pump may attain temperatures

over 80° C. There then exists the risk of suffering burns. Note the dan-

ger symbols on the pump and in the case of a hot pump wear the

required protection equipment.

If there is the risk of touching hot surfaces inadvertently, install corre-

sponding protection. When working on a pump which is still warm

from operation, always wear protective gloves.

2 The pump must only be operated at ambient temperatures between

12 and 40 °C. It needs to be ensured that the thermal radiation pro-

duced by the pump can be dissipated sufficiently. If the pump has to

be operated at higher ambient temperatures than 40 °C for any rea-

son, reduced max. differential pressures apply (derating). Please con-

sult Leybold for further details.

3 Operating the pump with less than the specified amount of cooling

water will result in excessively high surface temperatures which can

damage the pump. Moreover, there exists the risk of suffering burns.

4 Before disassembling the cooling water lines, let the pump cool down

first and shut off the supply line.

5 Before any servicing and maintenance work always let the pump cool

down first.

6 Note the warning information on the housing surface. If these warning

notices have been removed, are covered or obstructed, include corre-

sponding additional warning information.

0.4 Hazards Caused by Materials and Substances

1 The vacuum line must be leaktight. Hazardous process gases may

escape or the pumped gases can react with air or atmospheric humid-

ity. After installation of the pump and after servicing work on the vacu-

um system, a leak test will always be necessary.

When pumping hazardous gases we recommend a leak test on a reg-

ular basis. Leaks in the pump cannot be ruled out under all circum-

stances. When pumping hazardous gases, the operator must ensure

that leaks at the pump will not be a hazard.

2 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.

When planning to pump hazardous substances with this pump, read

the related chapters in the Safety Booklet and in these Operating

Instructions first. You can download the Safety Booklet from our

homepage.

CAUTION

DANGER

Safety Information

8 GA03108_002_C1 - 04/2018 - © Leybold

3 Contaminated parts can be detrimental to health and environment.

Before beginning with any work, first find out whether any parts are

contaminated. Adhere to the relevant regulations and take the neces-

sary precautions when handling contaminated parts.

4 The user has to ensure that all appropriate safety codes and all safety

procedures are applied in case of pumping toxic, chemically reactive,

corrosive gases and/or pyrophoric substances. Before using the

RUVAC pumps with toxic and/or aggressive gases, it is imperative that

you consult your local Leybold office.

5 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.

6 When pumping hazardous gases you must assume the presence of

corresponding residues in the pump.

7 After having operated the pump, the cooling water lines may suffer

from microbiological contamination. Introduce corresponding safety

precautions.

8 The intake and the discharge lines should be checked regularly for

leaks. There exists the danger of escaping gas.

9 The cooling water used must not attack stainless steel (note the cool-

ing water quality).

10 When changing the oil, remove any escaped oil as otherwise there

exists the risk of slipping.

11 After having completed the installation work we recommend running of

a leak test on the complete installation at an absolute pressure of 1100

mbar. Otherwise the possibility of escaping of process gases cannot

be completely ruled out.

12 Some Roots pumps use perfluoropolyether (PFPE) as lubricant.

When handling PFPE you should observe the following:

During thermal decomposition at temperatures over 290 °C toxic and

corrosive gases are released. When handling PFPE keep it way from

open fires. Do not smoke in the work area.

Touch the inner sections of the pumps only while wearing clean gloves,

and use clean tools;

do the necessary work in clean and dry rooms;

after having removed the pump from its packaging, start it up as

quickly as possible;

as cleaning agents solvents based on hydrofluorether compounds may

be used.

Safety Information

9GA03108_002_C1 - 04/2018 - © Leybold

0.5 Ignition Risk

1 Basically the RUVAC pumps must not be used with flammable or

explosive gases and vapors. In particular cases the composition of the

substances may not be critical. In any case the user is obliged to ana-

lyse the situation carefully and to take appropriate precautions intro-

duced by competent experts.

2 2Before pumping oxygen (or other highly reactive gases) at concentra-

tions exceeding the concentration in the atmosphere (> 21 % for oxy-

gen) it will be necessary to use a special pump. Such a pump will have

to be modified and degreased, and an inert special lubricant (like

PFPE) must be used.

3 3Before commissioning the RUVAC, make sure that the media which

are to be pumped are compatible with each other so as to avoid haz-

ardous situations. All relevant safety standards and regulations must

be observed.

4 4The standard version of the RUVAC is not suited for operation in

explosion hazard areas. Contact us before planning to use the pump

under such circumstances

0.6 Noise Hazard

1 The noise level produced by the RUVAC is between 63 and 75 dB(A).

When operating the pump temporarily at pressures above 100 mbar

the noise level can be much higher. Make sure that suitable protection

measures are taken to protect your hearing.

2 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).

CAUTION

Safety Information

10 GA03108_002_C1 - 04/2018 - © Leybold

0.7 Danger of Pump Damage

1 Do not use the pump for applications that produce abrasive or adhe-

sive powders or condensable vapors that can leave adhesive or high

viscosity deposits. Please contact Leybold Sales for selecting the right

separator.

2 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.

3 Before pumping vapors, the RUVAC should have attained its operating

temperature. The pump will have attained its operating temperature

about 1 hour after starting the pump. During this time the pump

should be separated from the process by a valve in the intake line, for

example.

4 In order to prevent the transfer of vibrations from the RUVAC to other

parts of the system we recommend the use of corrugated hoses or

compensators on both the intake and the discharge sides.

5 Do not use the RUVAC pumps in combination with backing pumps

that have an ultimate pressure above 10 mbar. This prevents exces-

sively high temperatures of the RUVAC in idle mode operation.

6 The maximum cooling water pressure must not exceed 6 bar.

Otherwise there exists the risk of leaks.

7 In the case of wet processes we recommend the installation of liquid

separators upstream and downstream of the pump so as to avoid a

massive influx of liquid into the pump.

8 The discharge line should be laid so that it slopes down and away

from the pump so as to prevent condensate from backstreaming into

the pump.

9 The ingress of particles and liquids must be avoided under all circum-

stances.

10 Before installing, all flange covers must be removed.

11 The location where the RUVAC is installed must be selected such that

all controls are easily accessible.

12 In order to ensure an adequate supply of oil, the location at which the

RUVAC (including its accessories) is operated should be such that

angles over > 1° from the vertical are avoided.

NOTICE

Andere Handbücher für RUVAC WS 251

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