Elmo Rletschle G-BH7 Operating instructions

Edition: 04.2012 · 610.44436.40.000 Original operating instructions · English

Operating Instructions G-BH7



2BH72 2BH73 2BH74 2BH75 2BH76

G-Serie

G-Series

Seitenkanal

Side Channel

Contents

1 Safety ..................................................................................................................................................3

1.1 Definitions .................................................................................................................................3

1.1.1 Safety alert symbol.......................................................................................................3

1.1.2 Signal words.................................................................................................................3

1.2 General safety precautions .......................................................................................................3

1.3 Residual risks............................................................................................................................6

2 Intended Use .......................................................................................................................................7

3 Technical Data ....................................................................................................................................8

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

3.2 Electrical data..........................................................................................................................11

3.3 Operating conditions ...............................................................................................................11

4 Transport and Handling.....................................................................................................................12

5 Installation .........................................................................................................................................13

5.1 Installation ...............................................................................................................................14

5.2 Electrical connection (motor) ..................................................................................................16

5.3 Connecting pipes/hoses (vacuum pump/compressor)............................................................18

5.3.1 Inlet connection ..........................................................................................................19

5.3.2 Discharge connection.................................................................................................19

5.3.3 Procedure when connecting pipes/hoses ..................................................................19

6 Commissioning..................................................................................................................................20

6.1 Preparation..............................................................................................................................20

6.2 Start-up and shut-down...........................................................................................................22

7 Operation...........................................................................................................................................22

8 Shut-Down and Longer Standstills....................................................................................................22

8.1 Preparing for shut-down or longer standstill ...........................................................................22

8.2 Storage conditions ..................................................................................................................23

9 Servicing............................................................................................................................................23

9.1 Repairs/troubleshooting ..........................................................................................................24

9.2 Service/After-sales service......................................................................................................25

9.3 Decontamination and Declaration of Clearance .....................................................................25

10 Disposal.............................................................................................................................................25

11 Explosion-Protected Design ..............................................................................................................25

EU declaration of conformity ..................................................................................................................26

Form for statement on safety .................................................................................................................27

Fig. 1: Design of gas-ring

vacuum pump/compressor

1 Vacuum pump/compressor

housing

2 Vacuum pump/compressor cover

3 Inlet connection with muffler

4 Discharge connection with

muffler

5 Base

6 Flow direction arrow

7 Rotating direction arrow

8 Drive motor

9 Fan guard (over external fan)

10 Terminal box

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.

1 Safety

1.1 Definitions

To point out dangers and important information, the following signal words and symbols are used in these operating instructions:

1.1.1 Safety alert symbol

The safety alert symbol  is located in the safety precautions in the highlighted heading field on the left next to the signal word (DANGER, WARNING, CAUTION).

Safety precautions with a safety alert symbol indicate a danger of injuries.

Be sure to follow these safety precautions to protect against injuries or death!

Safety precautions without a safety alert symbol indicate a danger of damage.

1.1.2 Signal words

DANGER

WARNING

CAUTION

NOTICE

NOTE

Danger of injuries.

Indicates an imminently hazardous situation, that will result in death or serious injury if the corresponding measures are not taken.

Danger of injuries.

Indicates a potentially hazardous situation, that could result in death or serious injury if the corresponding measures are not taken.

Danger of injuries.

Indicates a potentially hazardous situation, that may result in minor or moderate injury if the corresponding measures are not taken.

The signal words are located in the safety precautions in the highlighted heading field.

They follow a certain hierarchy and indicate (in conjunction with the safety alert symbol, see Chapter 1.1.1) the seriousness of

the danger and the type of warning.

See the following explanations:



DANGER



WARNING



CAUTION

Safety

CAUTION

Danger of damage.

Indicates a potentially hazardous situation that may result in property damage if the corresponding measures are not taken.

NOTICE

Indicates a possible disadvantage, i.e. undesirable conditions or consequences can occur if the corresponding measures are not taken.

NOTE

Indicates a possible advantage if the corresponding measures are taken; tip.

1.2 General safety precautions



WARNING

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

These operating instructions

 must have been read completely and

understood before beginning any work with or at the pump-motor unit,

 must be strictly observed,  must be available at the operating location of

the pump-motor unit.



WARNING

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

Only operate the pump-motor unit

 for the purposes indicated under "Intended

Use"!

 with the fluids indicated under 'Intended Use'!  with the values indicated under 'Technical

Data'!



WARNING

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

All work on and with the pump-motor unit (transport, installation, operation, shut-down, maintenance, disposal) may only be carried out by trained, reliable expert personnel!

Safety



WARNING

When working on the pump-motor unit, there is a danger of injury, e.g. in the form of cuts/cutting off, crushing and burns!

During all work on and with the pump-motor unit (transport, installation, operation, shut-down, maintenance, disposal) wear personal safety

equipment (safety helmet, protective gloves, safety shoes)!



WARNING

Hair and clothing can be pulled into the unit or caught and wound up moving parts!

Do not wear long, loose hair or wide, loose clothes! Wear a hair net!



DANGER

Electrical danger!

Work on electrical installations may be carried out by trained and authorized electricians only!



DANGER

Electrical danger!

Before beginning work on the unit or system, the following measures must be carried out:

 Deenergize.  Secure against being switched on again.  Determine whether deenergized.  Ground and short-circuit.  Cover or block off adjacent energized parts.



DANGER

Electrical danger!

Do not open the motor terminal box until absence of electricity has been ensured!



WARNING

Danger due to vacuum and gauge pressure: sudden escape of fluids (skin and eye injuries), sudden drawing in of hair and clothing!

Danger due to escaping fluid: Burns!

Use mounting elements, connections, lines, fittings and containers with sufficient freedom from leaks and strength for the pressures which occur.

Check the mounting elements, connections, lines, fittings and containers for strength, leaks and firm seating at regular intervals!



WARNING

Danger from rotating parts (external fan, impeller, shaft): Cutting/cutting off of extremities, Grasping/winding up of hair and clothing!

Danger due to vacuum and gauge pressure: sudden escape of fluids (skin and eye injuries), sudden drawing in of hair and clothing!

Danger due to escaping fluid: Burns!

Start-up

and operation only under the following

conditions:

 The pump-motor unit must be completely

assembled. When doing so, pay particular attention to the following components:

– the vacuum pump/compressor cover, – the muffler on inlet and discharge

connections,

– the fan guard.

 The pipes/hoses must be connected to inlet

and discharge connections.

 Inlet and discharge connections and the

connected pipes/hoses may not be closed, clogged or soiled.

 Check the mounting elements, connections

of the pipe/hose connections, lines, fittings and containers for strength, leaks and firm seating at regular intervals.

610.44436.40.000 4 / 28 © Gardner Denver Deutschland GmbH

Safety



WARNING

Danger from rotating parts (external fan, impeller, shaft): Cutting/cutting off of extremities, Grasping/winding up of hair and clothing!

Danger due to vacuum and gauge pressure: sudden escape of fluids (skin and eye injuries), sudden drawing in of hair and clothing!

Danger due to escaping fluid: Burns!

Before beginning work on the pump-motor unit

take the following measures:

 Shut down pump-motor unit and secure

against being switched on again.

 Attach a sign on the system controller and on

the control elements for the pump-motor unit: "DANGER! Maintenance work on vacuum pump/compressor! Do not switch on!"

 Wait for pump-motor unit to come to a

complete stop. Observe run-on time!

 Allow pump-motor unit to cool!  Shut-off lines. Release pressure.  Make sure that no vacuum or gauge pressure

is present in the lines/tanks to be opened.

 Make sure that no fluids can escape.



WARNING

Danger from rotating impeller: Cutting/cutting off of extremities!

The rotating impeller is accessible with the inlet and discharge connections open!

Do not reach into the unit through open connections!

Do not insert objects into the unit through the openings!



WARNING

Danger from rotating impeller: Cutting/cutting off of extremities!

The rotating impeller is accessible with the inlet and discharge connections open!

With free entry and exit of gases, i.e. with direct intake out of or direct feeding into the atmosphere without piping, the following therefore applies:

Provide the inlet and discharge connections of the pump-motor unit either with additional mufflers or with additional piping of a sufficient length to prevent access to the impeller!



WARNING

Danger of burns from hot surfaces of the pump-motor unit and from hot fluids!

High temperatures of up to approx. +160°C [+320°F] can occur on the surface of the pumpmotor unit.

Cover the pump-motor unit with a suitable touch protection (e.g. perforated plate cover or wire cover).

Do not touch during operation! Allow to cool after shut-down!

Safety

1.3 Residual risks



WARNING

Danger zone:

Hot surface up to approx. +160°C [+320°F]

Hazard:

Possible burns.

Protective measures:

Cover the pump-motor unit with a suitable touch protection (e.g. perforated plate cover or wire cover).



WARNING

Danger zone:

Fan guard

Hazard:

Long, loose hair can be drawn into external fan through fan guard grate, even with fan guard mounted!

Protective measures:

Wear hair net!



WARNING

Danger zone:

Missing or defective muffler inlet or discharge connection.

Hazard:

Possible serious hearing damage due to emitted noise.

Protective measures:

Have missing or defective mufflers replaced.

Conduct a noise measurement in the system after installing the pump-motor unit.

The following measures must be taken by the operator:

 from 85 dB(A):

– Hearing protection must be provided.

 from 90 dB(A):

– Mark noise area with a warning sign. – Wear hearing protection.



WARNING

Danger zone:

Environment of pump-motor unit.

Hazard:

Possible serious hearing damage due to emitted noise.

Protective measures:

Conduct a noise measurement in the system during operation after installing the pump-motor unit.

The following measures must be taken by the operator:

 from 85 dB(A):

– Hearing protection must be provided.

 from 90 dB(A):

– Mark noise area with a warning sign. – Wear hearing protection. – With free entry and exit of gases, i.e. with

direct intake out of or direct feeding into the atmosphere without piping, attach an additional muffler.

610.44436.40.000 6 / 28 © Gardner Denver Deutschland GmbH

2 Intended Use

These operating instructions

 apply to gas-ring vacuum pumps/compressors

of the G-BH7 series, models 2BH72, 2BH73, 2BH74, 2BH75 and 2BH76,

 contains instructions concerning transport and

handling, installation, commissioning, operation, shut-down, storage, servicing and disposal of the G-BH7,

 must be completely read and understood by

all operating and servicing personnel before beginning to work with or on the G-BH7,

 must be strictly observed,

 must be available at the site of operation of

the G-BH7.

About the operating and servicing personnel of the G-BH7

 These persons must be trained and

authorized for the work to be carried out.

 Work on electrical installations may be carried

out by trained and authorized electricians only.

The G-BH7s

 are pump-motor units for generating vacuum

or gauge pressure;

 are used to extract, pump and compress

the following gases:

– Air, – Non-flammable, non-aggressive, non-toxic

and non-explosive gases or gas-air mixtures.

– For differing gases/gas-air mixtures,

inquire with the Service Department.

 are equipped with one of the following kind of

drive motors:

– 3-phase AC drive motor with a standard or

explosion-protected design

– Single-phase AC drive motor

These operating instructions apply only to pump-motor units with a standard design.

For the explosion-protected design the separate operating instructions.

 exist in the following designs:

– single-impeller (single-stage) – two-impeller (two-stage) – three-impeller (three-stage)

Increased pressure differences can be achieved with the two-impeller and threeimpeller pump-motor units.

, see

Intended Use

 are primarily intended for higher pressure

conditions;

 are designed for continuous operation.

With increased switch-on frequency (at equal intervals of approx. 5x per hour) or increased gas entry and ambient temperature, the over temperature of the winding and the bearings can be exceeded. Consultation with the Service Department is required for operating conditions of this kind.

When operating the G-BH7, the limits listed in Chapter 3, "Technical Data", Pg. 8 ff. must always be complied with.

Foreseeable Misuse

It is prohibited

 to use the G-BH7 in applications other than

industrial applications unless the necessary protection is provided on the system, e.g. guards suitable for children's fingers;

 to use the device in rooms in which explosive

gases can occur if the G-BH7 is not expressly intended for this purpose;

 to extract, to deliver and to compress

explosive, flammable, corrosive or toxic fluids, unless the G-BH7 is specifically designed for this purpose;

 to operate the G-BH7 with values other than

those specified in Chapter 3, "Technical Data", Pg. 8 ff.

Any unauthorized modifications of the G-BH7 are prohibited for safety reasons.

The operator is only permitted to perform the maintenance and service work described in these operating instructions.

Any maintenance and service work which goes beyond this many only be performed by companies authorized by the manufacturer (inquire with the Service Department).

 are intended for industrial applications,

Technical Data

3 Technical Data

3.1 Mechanical data

Weight

Single-impeller design

Model Weight

[kg]

approx.

2BH7210-0..1.-.

2BH7310-0..1.-.

2BH7310-0..2.-.

2BH7410-0..1.-.

2BH7510-0..1.-.

2BH7510-0..2.-.

2BH7610-0..1.-.

2BH7610-0..3.-.

Two-impeller design

Model Weight

[kg]

2BH7220-0..2.-.

2BH7220-0..5.-.

2BH7320-0..5.-.

2BH7420-0..2.-.

2BH7420-0..5.-.

2BH7520-0..2.-.

2BH7520-0..7.-.

2BH7620-0..3.-.

2BH7620-0..5.-.

Three-impeller design

Model Weight

[kg]

2BH7530-0..8.-.

2BH7630-0..6.-.

approx.

[lbs]

approx.

[lbs]

approx.

112

106

143

[lbs]

approx.

150

207

Minimum distances

Minimum distance to fan guard (for sucking in cooling air):

Model [mm]

approx.

2BH72

2BH73

2BH74

2BH75

2BH76

[inches]

approx.

1.34

2.05

2.09

Minimum distance to face of vacuum pump/compressor cover:

Model [mm]

approx.

2BH7…

[inches]

approx.

1.18

Vibrations

The following table provides information on the maximum permissible loading due to vibrations.

Model Vibration velocity

eff

[mm/s]

≤

2BH72.. - 2BH75..

2BH76..

3.0

3.5

[ft/s]

≤

0.010

0.011

Noise level

Technical Data

Temperature increase

Measuring-surface sound-pressure level as per EN ISO 3744, measured at a distance of 1 m [3.28 ft] at an operating point of approximately 2/3 of the permissible total pressure difference with the lines connected without a vacuum or pressure relief valve, tolerance ±3 dB (A).

The information listed in the following tables corresponds to the heating of vacuum pump/compressor housings and the air exiting compared to the ambient temperature during operation with a permissible total pressure difference and an air pressure of 1,013 mbar [14.7 psi]. At lower air pressures these values

Single-impeller design

Model 1-m measuring-surface

sound pressure level L

[dB (A)]

50 Hz 60 Hz

2BH7210-0..1.-. 70

2BH7310-0..1.-. 70

2BH7310-0..2.-. 70

2BH7410-0..1.-. 70

2BH7510-0..1.-. 70

2BH7510-0..2.-. 70

2BH7610-0..1.-. 71

2BH7610-0..3.-.

Two-impeller design

Model 1-m measuring-surface

sound pressure level L

[dB (A)]

50 Hz 60 Hz

2BH7220-0..2.-. 70

2BH7220-0..5.-. 70

2BH7320-0..5.-. 70

2BH7420-0..2.-. 70

2BH7420-0..5.-. 70

2BH7520-0..2.-. 70

2BH7520-0..7.-. 71

2BH7620-0..3.-. 71

2BH7620-0..5.-.

Three-impeller design

Model

1-m measuring-surface sound pressure level L

[dB (A)]

50 Hz 60 Hz

2BH7530-0..8.-. 67 73

2BH7630-0..6.-. 77 80

increase.

Single-impeller design

Model Temperature increase

2BH7210-0..1.-.

2BH7310-0..1.-.

2BH7310-0..2.-.

2BH7410-0..1.-.

2BH7510-0..1.-.

2BH7510-0..2.-.

2BH7610-0..1.-.

2BH7610-0..3.-.

∆T [K]

approx.

∆ [F]

approx.

50 Hz 60 Hz 50 Hz 60 Hz

52 61

61 61

81 86

90 101

93 111

120 112

118 124

94 110

110 110

146 155

162 182

167 200

216 202

212 223

Two-impeller design

Model Temperature increase

2BH7220-0..2.-.

2BH7220-0..5.-.

2BH7320-0..5.-.

2BH7420-0..2.-.

2BH7420-0..5.-.

2BH7520-0..2.-.

2BH7520-0..7.-.

2BH7620-0..3.-.

2BH7620-0..5.-.

∆T [K]

approx.

∆ [F]

approx.

50 Hz 60 Hz 50 Hz 60 Hz

55 77

74 110

81 124

89 80

121 117

89 102

125 110

124 126

124 128

99 139

133 198

146 223

160 144

218 211

160 184

225 198

223 227

223 230

Three-impeller design

Model Temperature increase

2BH7530-0..8.-.

2BH7630-0..6.-.

∆T [K]

approx.

∆ [F]

approx.

50 Hz 60 Hz 50 Hz 60 Hz

120 120

216 216

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