Elmo Rletschle L-BV5 Operating instructions

Edition: 03.2010 · 610.44440.40.000 Original operating instructions · English

Operating instructions L-BV2, L-BV5



2BV2 06. 2BV2 07. 2BV5 11. 2BV5 121 2BV5 131 2BV5 161 2BV5 41. 2BV5 421 2BV5 47.

L-Serie

L-Series

Flüssigkeitsring

Liquid Ring

Contents

Layout of the units .............................................................................................................................. 3

1 Safety ..................................................................................................................................................4

1.1 Definitions .................................................................................................................................4

1.1.1 Warning symbol............................................................................................................4

1.1.2 Key word ......................................................................................................................4

1.2 General safety instructions .......................................................................................................4

1.3 Other risks.................................................................................................................................6

2 Correct use of the equipment ..............................................................................................................6

3 Technical data .....................................................................................................................................8

3.1 Mechanical data ........................................................................................................................8

3.2 Electrical data..........................................................................................................................10

3.3 Operating conditions normal operation ...................................................................................10

4 Transport ...........................................................................................................................................13

5 Installation .........................................................................................................................................14

5.1 Installing the unit .....................................................................................................................14

5.2 Mechanical connection of the unit...........................................................................................15

5.2.1 Connecting the suction and discharge connections...................................................16

5.2.2 Making the operating-liquid connection......................................................................16

5.2.3 Connecting up system components ...........................................................................17

5.2.4 Ancillaries ...................................................................................................................17

5.3 Connecting the electric motor .................................................................................................18

5.3.1 Connection to the motor terminal box ........................................................................18

5.3.2 Operation with a frequency converter ........................................................................19

6 Commissioning..................................................................................................................................19

6.1 Preparation of the unit.............................................................................................................19

6.2 Start-up of unit with operating-liquid supply............................................................................20

6.3 Start-up of unit with self-suction of operating-liquid ................................................................20

6.4 Checking the direction of rotation ...........................................................................................20

7 Operation...........................................................................................................................................21

7.1 Operation with supply of the operating-liquid, automatically controlled operation..................21

7.2 Operation with supply of the operating-liquid, non-automatic control of operation.................21

7.3 Operation with self-suction of the operating-liquid..................................................................22

7.4 Checking and correcting the operating-liquid flow-rate...........................................................22

8 Decommissioning the machine and shutting it down for a longer period of time..............................23

8.1 Draining down .........................................................................................................................23

8.2 Preparations for long-term shutdown......................................................................................24

8.3 Storage conditions ..................................................................................................................24

8.4 Commissioning after a long shutdown period .........................................................................24

9 Maintenance......................................................................................................................................25

9.1 Maintenance............................................................................................................................26

9.2 Repairs / Troubleshooting .......................................................................................................27

9.3 Service / Customer service .....................................................................................................29

9.4 Decontamination and declaration of Clearance......................................................................29

10 Disposal.............................................................................................................................................29

11 Explosion-protected design ...............................................................................................................29

EU declaration of conformity ............................................................................................................ 30

Form for statement on safety ........................................................................................................... 31

Replication, distribution and / or editing of this document and the use and distribution of its content is prohibited unless explicitly permitted. Violation obligates compensation for damages. All rights reserved in case of the issue of a patent, utility patent or design patent.

Layout of the units

2BV2 0..

2BV5 1..

2BV5 4..

444

610.44440.99.B01…B03

Fig. 1: Layout of the units

Designation

Item

Terminal box

Mounting feet

Intermediate plates —

Drain tapping(s)

Anti-cavitation

connection

Operating-liquid

connection

Discharge connec-

tion

Inlet connection

Direction of rota-

tion arrow

2BV2 … 2BV5 1.. 2BV5 4..-.F 2BV5 4..-1G

2BV5 110-….2-.S 2BV5 121-….2-.S

/4 ODER

/8 G

/8 — —

G 1/4 G

G 3/8 G

G 3/8

Flange (stainless

— —

/8 G

steel)

Threaded Flanged Flanged Threaded

Safety

1 Safety

1.1 Definitions

The following key words and symbols are used to impart warnings, important information and notes in these operating instructions:

1.1.1 Warning symbol

The warning symbol  is depicted in the safety instructions in the related title frame on the left next to the key word (DANGER, WARNING, CAUTION). Safety instructions and warning symbols indicate danger of personal injury. Please follow these safety instructions to protect yourself against injury or death! Safety instructions without warning symbols indicate danger of material damage.

1.1.2 Key word

DANGER

WARNING

CAUTION

ATTENTION

NOTE

Danger of personal injury.

Indication of an immediately threatened danger which could lead to death or serious injury if the appropriate precautions are not observed.

Danger of personal injury.

Indication of an immediately threatened danger which could lead to death or serious injury if the appropriate precautions are not observed.

Danger of personal injury.

Indication of a possible danger which could lead to medium or light injury if the appropriate precautions are not observed.

The key words are in the title frame in the safety instructions.

They follow a defined hierarchy and they indicate (in connection with the warning symbol, see chapter 1.1.1) the importance of the danger or the nature of the instruction.

Refer to the following clarifications:



DANGER



WARNING



CAUTION

Danger of material damage.

Indication of a possible danger which could lead to material damage if the appropriate precautions are not observed.

CAUTION

Indication of a possible disadvantage, i.e. undesired circumstances may arise if the appropriate precautions are not observed.

NOTE

Indicates a possible advantage, if the appropriate precautions are observed; tip.

1.2 General safety instructions



WARNING

Improper handling of the unit can result in serious or even fatal injuries!

This operating manual  must be read and understood before com-

mencing any work on or with the unit, and

 must be complied with and  must be available at the unit's location



WARNING

Improper handling of the unit can result in serious or even fatal injuries!

Operate the unit  for the purposes specified under "Correct use

of the equipment", page 6!

 using the media specified under "Correct use

of the equipment", page 6!

 using the values specified under "Technical

data", page 8!



WARNING

Improper handling of the unit can result in serious or even fatal injuries!

Only trained and responsible specialist personnel may work on or with the unit (transport, installation, commissioning, shutdown, maintenance, disposal)!

610.44440.40.000 4 / 32 © Gardner Denver Deutschland GmbH

Safety



WARNING

Working on the unit involves a risk of injury, e.g. through cutting / shearing, squashing and burning!

 First get personal protection gear (helmet,

gloves, safety shoes)

 and only then work on the system!



WARNING

Hair and clothing can be drawn into the unit or caught or wound in by moving parts!

 Do not wear any large or loose items of cloth-

ing!

 If you have long, loose hair, wear a hair net!



DANGER

Electrical hazard!

Before starting work on the unit or system, the following precautions are to be taken:

 De-energize it.  Protect it from being switched on again.  Make sure that it is de-energized.  Earth it and bypass it.  Cover or block off adjoining parts which are

still live.



DANGER

Electrical hazard!

Work on electrical equipment must be performed by specialist electricians!



DANGER

Electrical hazard!

 First check that it is de-energized.  Then open the motor terminal box!



WARNING

Hazard in case of overpressure and negative pressure!

Hazard presented by leaking media!

Before starting work on the unit or on the system:

 Shut off the operating-liquid supply.  Vent the piping and the unit (de-pressurize).



WARNING

Hazard presented by rotation of the unit's external fan!

Operate the unit only if the fan guard is fitted!



WARNING

Hazard presented by rotation of the unit's impeller!

Operate the unit only if the cover is fitted! Removal of the cover is forbidden!



WARNING

Hazard in case of overpressure and negative pressure!

Hazard presented by leaking media!

Hazard presented by rotation of the unit's impeller!

Operate the unit only with the piping / hoses connected up to the suction and discharge connections and to the operating-liquid connection!



WARNING

Hazard of cutting or severing of limbs by the unit's impeller!

 Do not reach inside the unit through open

connections!

 Do not put objects into any of the openings in

the unit!



WARNING

Hazard in case of overpressure and negative pressure!

 Pressure-test the piping and vessels installed

in the system!



WARNING

Hazard in case of overpressure and negative pressure!

Hazard presented by leaking media!

 Check the piping / hose connections for leak-

age!



WARNING

Danger of burns or scalding from hot surfaces on the unit and from hot media!

 Do not touch when in operation!  After shutdown, allow system to cool down!



CAUTION

Danger of crushing if the unit should tip over!

 Secure the unit to it's foundation before start-

up!

Correct use of the equipment

1.3 Other risks



WARNING

It is possible for long, loose hair to be drawn into the external fan through the grille in the fan guard!

 Wear a hair net!



WARNING

Long, loose hair can be caught and wound in by the rotation of the shaft between the motor end-shield and the pump casing.

 Wear a hair net!



WARNING

Injury can be caused by friction (abrasion, burning, etc.) against the rotating shaft between the motor end-shield and the pump casing.

 Do not reach into the openings between the

motor end-shield and the pump casing!

 Do not insert any objects into the openings

between the motor end-shield and the pump casing.



WARNING

Hot surfaces can cause burning / scalding!

 Do not touch!  Wear protective gloves!

2 Correct use of the equipment

This operating instructions

 is applicable for Liquid ring vacuum pumps/

compressors (units) types: 2BV2 06. 2BV2 07. 2BV5 11. 2BV5 121 2BV5 131 2BV5 161 2BV5 41. 2BV5 421 2BV5 47. in standard design,

 contains instructions for the unit’s transporta-

tion, installation, start-up, operation, shutdown, storage, maintenance and disposal,

 Must have been read and properly understood

by operating and maintenance staff before beginning any work with or on the unit.

 must be complied with and  Must be at hand where the unit is installed.

Operating and maintenance personnel

Operating and maintenance personnel units must be trained and authorised for the work to be carried out.

Work on electrical installations may only be carried out by a specialist electrician. A specialist electrician is someone who can evaluate and identify potential risks for the assigned task as a result of their technical training, knowledge and experience as well as knowledge about relevant regulations.

610.44440.40.000 6 / 32 © Gardner Denver Deutschland GmbH

Correct use of the equipment

The units

 create a vacuum or overpressure.  are used to extract, deliver and compress the

following gases / vapours:

- all dry and humid gases,

which are not explosive, flammable, aggressive or poisonous,

- Air or air-vapour mixtures.

- In the case of explosive, flammable, ag-

gressive or poisonous gases / vapours, please consult the manufacturer.

- The gases / vapours must be free of solid

matter. Small quantities of light suspended matter or liquids can be conveyed along too.

 are designed for operation with the following

operating-liquids:

- Water

of pH-value between 6 and 9, that are free of solid matter (e.g. sand).

- in the case of pH-values or operating-liquids

deviating from the above, please contact the manufacturer.

 are suitable for a deep vacuum range.  are fitted with one of the following types of

drive motor:

- standard design,

- explosion-protected design.

These operating instructions are only applicable for units in the standard design. For the explosion-protected design (RL 94/9/EG) - see supplementary special operating instructions.

 are available in two constructions:

- cast iron construction for normal require-

ments,

- stainless steel construction for higher corro-

sion-resistance and hygiene requirements (only 2BV2 070, 2BV2 071, 2BV5 1..).

 are designed for industrial plants.  Are designed for continuous operation.

For operation of the units, please refer to chapter 3, "Technical data", page 8 hereunder for the specified tolerance limits which must be adhered to.

Foreseeable misuse

The following are forbidden:

 to use the unit in non-industrial systems,

to operate the system if it does not include the necessary precautions and protective devices, e.g. protection against touching by small fingers,

 to operate the unit in spaces in which explo-

sive gases may be present, insofar as the unit is not specifically designed for such conditions;

 extraction, conveyance and compression

of explosives, combustible, aggressive or poisonous media, insofar as the unit is not specifically designed for such conditions,

 operation of the unit at any values other than

those specified in chapter 3, "Technical data", page 8 hereunder.

Modifications to the units are forbidden for safety reasons. The operator is allowed to carry out maintenance and repair work only to the extent described in these operating instructions. Maintenance and repair work which goes beyond this may only be carried out by companies which have been authorised by the manufacturer (ask the service department for details).

Technical data

3 Technical data

3.1 Mechanical data

Mass / Weight

Weight* Type

approx.

[kg]

2BV2 060

2BV2 061

2BV2 070

Stainless steel

2BV2 071 Cast iron

Stainless steel

2BV5 110 Cast iron

Stainless steel

2BV5 111 Cast iron

Stainless steel

2BV5 121 Cast iron

Stainless steel

2BV5 131 Cast iron

Stainless steel

2BV5 161 Cast iron

Stainless steel

2BV5 470 Cast iron

2BV5 471 Cast iron

2BV5 410-.F Bronze

2BV5 410-1G Cast iron

2BV5 411 Cast iron

2BV5 421 Cast iron

Cast iron

25 55.5

26 57.5

35 77.5

42 93.0

61 135

67 148

95 201

98 216

110 243

113 249

170 375

182 401

181 399

196 432

252 556

264 582

68 150

77 170

95 210

87 192

137 302

153 337

* Specified is the weight for the largest motor size.

approx.

[lbs]

Minimum clearances for heat dissipation

Type Minimum clearance

Fan guard - adjacent surfaces

[mm] [inches]

2BV2 060

2BV2 061

2BV2 070

2BV2 071

2BV5 110

2BV5 111

2BV5 121

2BV5 131

2BV5 161

2BV5 410

34 1.34

53 2.09

80 3.15

83 3.27

Noise level

Measured area sound pressure in accordance with EN ISO 3744, measured at 1 m [3.28 ft] distance at medium throttle (100 mbar abs. [1.45 psia]) and with piping connected, tolerance ±3 dB(A)

Type Sound pressure level measured at

1 m distance, L [dB(A)]

50 Hz: 60 Hz:

2BV2 060

2BV2 061

2BV2 070

2BV2 071

2BV5 110

2BV5 111

2BV5 121

2BV5 131

2BV5 161

70 70

70 71

72 76

70 70

70 74

70 75

73 77

74 75

2BV5 410

70 70

Operating speed

See nameplate.

The operating speed is specified for a 50/60 Hz power supply. For other speeds please contact the manufacturer.

Technical data

ATTENTION

If the permissible operating speed is exceeded this has a detrimental effect on the unit's operating characteristics:

 higher noise levels  heavy vibrations  reduced grease useful lifetime  reduced time between changing bearings

The maximum speed should not be exceeded, as damage can result from higher operating speeds.

Operating speeds standard operation at 50/60 Hz

n [min-1]* Type

50 Hz 60 Hz:

2BV2 …

2BV5 110 2BV5 131

2BV5 161

3000 3600

1500 1800

1000 1200

Tightening torques for

non-electrical connections

Thread [Nm] [ft lbs]

M10

M12

M16

2.7 - 3.3 1.99 - 4.44

3.6 - 4.4 2.65 - 3.25

7.2 - 8.8 5.31 - 6.5

21.6 - 26.4 15.9 - 19.5

37.8 - 46.2 27.9 - 34.1

63.0 - 77.0 46.5 - 56.8

90 - 110 66.42 – 81.18

The following specifications for electrical connections apply to all terminal board connections with the exception of terminal strips.

Tightening torques

for electrical connections

Thread [Nm] [ft lbs]

2BV5 410

No account is taken of motor slip

1500 1800

Maximum speeds for operation with electronic frequency converter

Type n

2BV2 060

2BV2 061

2BV2 070

2BV2 071

2BV5 110

2BV5 111

2BV5 121

2BV5 131

2BV5 161

2BV5 410

[min-1] n

min

[min-1]

max

2636 4612

2123 3715

1402 2454

1290 2258

1180 2066

913 1597

1402 2454

Tightening torques

The following values shall apply insofar as no other specifications are available. The basis for non-electrical connections is tightness classes 8.8 and 8 or higher in accordance with EN ISO 898-1.

M4 0.8 - 1.2 0.59 - 0.89

M5 1.8 - 2.5 1.33 - 1.84

M6 2.7 - 4 1.99 - 2.95

The following values apply specially for metallic and plastic cable and pipe unions:

Tightening torques for metal

threaded glands/unions

Thread [Nm] [ft lbs]

M12x1,5

M16x1,5

M25x1,5

4 - 6 2.95 - 4.43

5 - 7.5 3.69 - 5.53

6 - 9 4.43 - 6.64

M32x1,5

M40x1,5

8 - 12 5.9 - 8.85

Tightening torques for plastic

threaded glands/unions

Thread [Nm] [ft lbs]

M12x1,5

M16x1,5

M25x1,5

2 - 3.5 1.48 - 2.58

3 - 4 2.21 - 2.95

4 - 5 2.95 - 3.69

M32x1,5

M40x1,5

5 - 7 3.69 - 5.16

Technical data



3.2 Electrical data

See motor rating plate.

3.3 Operating conditions normal operation

Temperatures

Temperatures of the gases / vapours

[°C] [°F]

max. +80 max. +176

For higher media temperatures provisions have to be made in the system to protect against burning, e.g. fitting of guards.

In this case one of the following provisions can be made:

 increase of the operating-liquid flow-rate to 2.5

times (2BV2 …) or to 2 times (2BV5 …) the design operating-liquid flow-rate (cooling circulation)

 installation of a pre-condenser

Temperature of the operating-liquid

[°C] [°F]

max. +80 max. +176

min. +5 min. +41

Nominal value:

+15 +59

Ambient temperature

[°C] [°F]

max. +40 +104

min. +5 +41

Pressures

Min. suction pressure p

for operation

1 min

with cavitation-protection

Cavitation-protection tapping open (2BV2 0.. and 2BV5 1.. only)

[mbar abs.] [psia]

max. achievable under-pressure (full throttling)

As a general rule: The higher the temperature, the lower the suction capacity, i.e. the higher the minimum achievable suction pressure.

300

250

200

150

[mbar abs.] p

100

4,5

3,5

2,5

1,5

0,5

- 

[psia] p

20 40 60

[°C]

50 100 150 200

[°F]

610.44440.99.B04

[°C, °F] = temperature of the operating-

liquid

- p

[mbar abs., psia] = absolute suction pres-

sure

Fig. 2: Pressure characteristics at varying

operating conditions

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