Elmo Rletschle L-BV3 User Manual
Edition: 12.2009 · 610.444430.40.000 Original Operating Instructions · English
Operating Instructions L-BV3
2BV3151
L-Serie
L-Series
Flüssigkeitsring
Liquid Ring
Contents
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 .......................................................................................................4
1.3 Residual risks............................................................................................................................5
2 Intended Use .......................................................................................................................................6
3 Technical Data ....................................................................................................................................7
3.1 Mechanical data ........................................................................................................................7
3.2 Electrical data............................................................................................................................7
3.3 Operating conditions .................................................................................................................7
4 Operating modes.................................................................................................................................9
4.1 Self-priming operation...............................................................................................................9
4.2 Operation with operating-liquid feed .........................................................................................9
5 Transport and Handling.....................................................................................................................10
6 Installation .........................................................................................................................................11
6.1 Installation ...............................................................................................................................11
6.2 Electrical connection (motor) ..................................................................................................12
6.3 Connecting pipes/hoses (vacuum pump/compressor)............................................................14
6.3.1 Inlet connection and discharge connection................................................................15
6.3.2 Operating-liquid port...................................................................................................15
6.3.3 Notes ..........................................................................................................................15
7 Commissioning..................................................................................................................................16
7.1 Preparation and start-up .........................................................................................................16
7.2 Self-priming operation.............................................................................................................17
7.3 Operation with operating-liquid feed .......................................................................................18
8 Operation...........................................................................................................................................20
8.1 Self-priming operation.............................................................................................................20
8.2 Operation with operating-liquid feed .......................................................................................20
9 Shut-Down and Longer Standstills....................................................................................................22
9.1 Draining...................................................................................................................................22
9.2 Preparing for longer standstill .................................................................................................22
9.3 Storage conditions ..................................................................................................................23
10 Servicing............................................................................................................................................24
10.1 Maintenance............................................................................................................................24
10.2 Repairs/troubleshooting ..........................................................................................................26
10.3 Service/After-sales service......................................................................................................29
10.4 Decontamination and Declaration of Clearance .....................................................................29
11 Disposal.............................................................................................................................................29
EC Declaration of Conformity .................................................................................................................30
Form for statement on safety .................................................................................................................31
© 2009 Gardner Denver Deutschland GmbH · Industriestraße 26 · 97616 Bad Neustadt · Germany
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
Safety
Fig. 1: Design of liquid-ring vacuum
pump/compressor
1 Operating-liquid port
2 Discharge connection
3 Inlet connection
4 Connection for cavitation protection
5 Drain hole
6 Vacuum pump/compressor housing
7 Vacuum pump/compressor cover
8 Flow direction arrows
9 Rotating direction arrow
10 Drive motor
11 Base
12 Fan guard (over external fan)
13 Terminal box
WARNING
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
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
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.
CAUTION
Danger of injuries.
Indicates a potentially hazardous situation, that
may result in minor or moderate injury if the
corresponding measures are not taken.
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.
© Gardner Denver Deutschland GmbH 3 / 32 610.444430.40.000
Safety
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!
WARNING
When working on the 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! Use a hair net!
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!
Work on electrical installations may be carried
out by trained and authorized electricians only!
DANGER
Electrical danger!
Replace loose connections, singed or burned
cables immediately!
DANGER
Electrical danger!
Do not open the motor terminal box unless
absence of electricity has been ensured!
DANGER
Electrical danger!
Depending on the charging state of the
capacitors, a residual voltage may be present
on the terminals in the terminal box.
After opening the terminal box cover, it must
be ensured that the capacitors are completely
deenergized:
Measure the voltage at the corresponding
jumpers (see the circuit diagram in the
terminal box).
Dissipate the residual voltage with suitable
means if necessary.
The capacitors must be completely
deenergized.
WARNING
Danger due to gauge pressure and vacuum!
Danger due to escaping fluid!
Before beginning work on the unit or system:
Interrupt supply of operating liquid.
Bleed lines and vacuum pump/compressor
(depressurize).
610.444430.40.000 4 / 32 © Gardner Denver Deutschland GmbH
Safety
WARNING
Danger from rotating external fan of unit!
Only operate the unit with the fan guard
mounted!
It is prohibited to remove the fan guard!
WARNING
Danger from rotating impeller of unit!
Only operate the unit with the vacuum
pump/compressor cover and housing mounted!
It is prohibited to remove the vacuum
pump/compressor cover and the housing!
WARNING
Danger due to gauge pressure and vacuum!
Danger due to escaping fluid!
Danger from rotating impeller of unit!
Only operate the unit with the pipes/hoses
connected to the intake and discharge
connection, as well as to the operating-liquid
port!
WARNING
Danger in the form of cuts or cutting off
extremities on the impeller of the pumpmotor unit!
Do not reach into the unit through open
connections!
Do not insert objects into the unit through the
openings!
WARNING
Danger due to gauge pressure and vacuum!
Check the lines and containers used for
sufficient strength!
WARNING
Danger due to gauge pressure and vacuum!
Danger due to escaping fluid!
Check the connections of the pipe/hose
connections for leaks!
WARNING
Danger of burns and scalding from hot
surfaces of the pump-motor unit and from
hot fluids!
Do not touch during operation!
Allow to cool after shut-down!
CAUTION
Danger of crushing from unit tipping over!
Secure the pump-motor unit on the installation
surface before putting into operation!
1.3 Residual risks
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:
Hot surface.
Hazard:
Burns/scalding possible.
Protective measures:
Do not touch! Wear protective gloves!
© Gardner Denver Deutschland GmbH 5 / 32 610.444430.40.000
Intended Use
2 Intended Use
These operating instructions
applies to liquid-ring vacuum
pumps/compressors of the series L-BV3,
model 2BV3151,
contain instructions bearing on transport
and handling, installation, commissioning,
operation, shut-down, storage, servicing
and disposal of the L-BV3,
must be completely read and understood by
all operating and servicing personnel before
beginning to work with or on the L-BV3,
must be strictly observed,
must be available at the site of operation of
the L-BV3.
About the operating and servicing personnel of
the L-BV3:
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 L-BV3
are pump-motor units for generating
vacuum or gauge pressure.
are used to extract, transport and compress
the following pumped gases/vapors:
– all dry and humid gases,
which are not explosive, aggressive or
toxic,
– preferably air or air/vapor mixtures.
– The gases/vapors to be fed must be free
of solid material.
However, small quantities of light
suspended materials or liquids can also
be transported.
are designed for operation with the
following operating liquids:
– Water
with a pH of 6.5 to 9.5,
free of solid materials (such as sand).
– If the pH values or operating liquids
differ, it is necessary to contact the
Service Department.
have the rough vacuum range as the
intended operating range.
are intended for industrial applications.
are designed for continuous operation.
When operating the L-BV3, the limits listed in
Chapter 3, "Technical Data", Pg. 7 ff. must
always be complied with.
If the L-BV3 is used to extract hot fluids, the
necessary safety measures must be taken by
the user.
Foreseeable Misuse
It is prohibited
to use the L-BV3 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 L-BV3 in rooms in which
explosive gases can occur,
the sucking up, feeding and compression of
explosive, flammable, aggressive or toxic
fluids,
to operate the L-BV3 with values other than
those specified in Chapter 3, "Technical
Data", Pg. 7 ff.
Any unauthorized modifications of the L-BV3
are prohibited for safety reasons.
Maintenance and repair work by the operator
are only permitted in the scope described in
these operating instructions.
Any maintenance and repair work going
beyond this may only be conducted by
companies authorized by the manufacturer
(inquiry with the Service Department
necessary).
610.444430.40.000 6 / 32 © Gardner Denver Deutschland GmbH
3 Technical Data
3.1 Mechanical data
Weight
Technical Data
Tightening torques
The values specified here for tightening
torques apply unless other values are
indicated.
Type Weight
approx.
[kg]
2BV3151 9 19.8
approx.
[lbs]
Thread [Nm]
Higher weights are possible with special
models.
Minimum distances for heat dissipation
Type Minimum distance from
fan guard to adjacent surface
[mm] [inches]
2BV3151 20 0.787
G⅛ 4.5 3.32
G⅜ 16 11.8
Thread [Nm]
Noise level
Measuring-surface sound-pressure level
according to EN ISO 3744 measured at a
distance of 1 m [3.28 ft] with moderate
throtteling (8 kPa abs. [1.16 psia]) and lines
connected.
Type 1-m measuring-surface sound
pressure level L [dB (A)
at 50 Hz: at 60 Hz:
2BV3151 70 70
M4 1.0 0.738
M5 2.2 1.62
These values for electrical connections applies
to all terminal board connections with the
exception of modular terminal blocks.)
Thread [Nm]
Operating speed
See rating plate.
NOTICE
Exceeding of the operating speed will
negatively affect the operating behavior of the
pump-motor unit:
higher noise emissions
stronger vibrations
shorter grease consumption time
M3 0.6 0.443
(These values for electrical connections apply
to all modular terminal blocks.)
3.2 Electrical data
See drive motor rating plate.
3.3 Operating conditions
Temperatures
reduced bearing change interval
To prevent damage due to excessively high
speeds, it may be necessary to request the
limit speed (inquire with the Service
Department).
Temperature of pumped gases/vapors:
max. +110 °C max. +230 °F
At higher fluid temperatures, measures must
be taken on the system to prevent burns, e.g.
mount separating safety device (cover).
In addition, we also recommend one of the
following measures at temperatures > 80 °C
[> 176 °F]:
Increasing the operating-liquid flow rate by
up to twice the rated liquid flow rate (cooling
circuit)
Use of a series capacitor
Tightening torques
for screw connections
(pipe-connections)
± 10 %
Tightening torques
for electrical connections
(terminal board-connections)
± 10 %
Tightening torques
for electrical connections
(modular terminal blocks)
± 10 %
[ft lbs]
± 10 %
[ft lbs]
± 10 %
[ft lbs]
± 10 %
© Gardner Denver Deutschland GmbH 7 / 32 610.444430.40.000
Technical Data
Operating-liquid temperature:
max. +40 °C max. +104 °F
min. +5 °C min. +41 °F
Nominal value:
+15 °C +59 °F
Ambient temperature:
max. +40 °C +104 °F
min. +5 °C +41 °F
Pressures
Min. inlet pressure p
1 min
:
Depending on the type and temperature of the
operating liquid.
During vacuum operation without cavitation
protection (cavitation protection hole closed):
5 kPa 0.725 psi
It may not be dropped below to prevent
damage due to cavitation!
Damage due to cavitation are purposely
disregarded if the minimum inlet pressure is
3.3 kPa [0.479 psi].
The specified values apply to the following
conditions:
Operating liquid:
Water at +15 °C [+59 °F]
pumped gases/vapors:
dry air at +20 °C [68 °F]
They are higher the higher the temperature
and the higher the vapor pressure of the
operating liquid used.
During vacuum operation with cavitation
protection (cavitation protection hole open):
max. achievable vacuum, i.e. complete
throttling
The following generally applies: The higher the
temperature, the lower the intake capacity, i.e.
the higher the minimum achievable inlet
pressure.
Max. discharge pressure p
2 max
during
vacuum operation:
110 kPa abs. 16.0 psia
This value applies, provided the rated
operating-liquid flow rate is adhered to.
Max. discharge pressure (differential
pressure) p
during compressor
2 max
operation (at inlet pressure p1 = 101.3
bar abs. [14.7 psia]):
60 kPa 8.70 psi
This value applies, provided the rated operatingliquid flow rate is adhered to.
Max. permissible pressure in the pumpmotor unit p
during compressor
int max
operation:
300 kPa abs. 43.5 psia
If higher pressures can occur in the system, then
corresponding protective devices must be provided.
Max. pre-pressure of the operating liquid
300 kPa abs. 43.5 psia
When the permissible operating liquid pressure is
exceeded, too much liquid enters the vacuum
pump/compressor. Damage can occur.
Liquid quantities
Nominal operating-liquid flow rate
(with dry air extraction and with water at 15 °C
[59 °F] as operating liquid)
0.65 l/min 0.172 gal (US)/min 0.143 gal (UK)/min
(0.039 m³/h) (1.38 ft³/h)
Max. filling quantity for operating liquid at a
standstill
0.200 l 0.053 gal (US) 0.044 gal (UK)
Repeated switching on of the pump-motor unit
in the flooded state can result in damage.
Maximum permissible quantity of water
entrained via the inlet connection
3.9 l/min 1.03 gal (US)/min 0.858 gal (UK)/min
If larger quantities can occur, a separator must be
installed upstream on the inlet side.
610.444430.40.000 8 / 32 © Gardner Denver Deutschland GmbH
Operating modes
4 Operating modes
The pump-motor unit can function in several
different operating modes.
These differ in how the pump-motor unit is
supplied with operating liquid:
Self-priming operation
Operation with operating-liquid feed:
– Non-automatic operation
– Automatic operation
4.1 Self-priming operation
In this operating mode the pump-motor unit
automatically sucks in the operating liquid.
The operating-liquid flow rate is automatically
adjusted.
See Fig. 4, Pg. 17.
4.2 Operation with operating-liquid feed
In this operating mode the pump-motor unit
DOES NOT automatically suck in the operating
liquid.
A certain volume flow ("nominal operatingliquid flow rate") or pre-pressure must be set
for the operating liquid.
Here the following additional distinctions are
made:
Non-automatic operation
In this case the operating liquid feed is
switched on and off manually with a stop valve.
See Fig. 6, Pg. 19.
Automatic operation
In this case the operating liquid feed is
switched on and off by a solenoid valve. The
solenoid valve is dependent on the motor
operating mode:
Motor/pump-motor unit switched on:
Valve open.
Motor/pump-motor unit switched off:
Valve closed.
See Fig. 7, Pg. 19.
NOTICE
The following is dependent on the operating
mode:
when and how the pump-motor unit must
be filled with operating liquid the first time,
how the pump-motor unit is put into
operation.
The specifications for this are contained in
Chapter 6, "Installation", Pg. 11ff., and
Chapter 7, "Commissioning", Pg. 16ff.
© Gardner Denver Deutschland GmbH 9 / 32 610.444430.40.000
Transport and Handling
5 Transport and Handling
WARNING
Improper use of the machine can result in
serious or even fatal injuries!
Have you read the safety precautions in
Chapter 1, "Safety", Pg. 3 f.?
Otherwise you may not carry out any work with
or on the machine!
WARNING
Danger from tipping or falling loads!
Prior to transport and handling make sure that
all components are securely assembled and
secure or remove all components the fasteners
of which have been loosened!
CAUTION
Tipping or falling can lead to crushing,
broken bones etc.!
Sharp edges can cause cuts!
Wear personal safety equipment (protective
helmet, protective gloves, safety shoes) during
transport!
Packing:
In case of a separate delivery, the pump-motor
unit is packed in a carton.
In the case of a group delivery, the pumpmotor units are packed in cardboard boxes or
screen boxes on pallets.
Manual handling:
WARNING
Danger from lifting heavy loads!
Manual handling of the unit is only permitted
within the following limits:
max. 30 kg [max. 66 lbs] for men
max. 10 kg [max. 22 lbs] for women
max. 5 kg [max. 11 lbs] for pregnant women
For the weight of the pump-motor unit, see
Chapter 3.1, "Mechanical data",
Section "Weight", Pg. 7.
For weights above the given values use
suitable lifting appliances and handling
equipment!
WARNING
Danger from tipping or falling loads!
Do not hold the pump-motor unit on the
capacitors or cable glands on the terminal box!
Handling by means of lifting equipment:
WARNING
Danger from tipping or falling loads!
When transporting with lifting equipment,
observe the following basic rules:
The lifting capacity of lifting equipment and
lifting gear must be at least equal to the
unit's weight.
For the weight of the pump-motor unit, see
Chapter 3.1, "Mechanical data",
Section "Weight", Pg. 7.
The pump-motor unit must be secured so
that it cannot tip or fall.
Do not hook the pump-motor unit onto the
capacitors or cable glands on the terminal
box!
Do not stand or walk under suspended
loads!
Use two lifting belts, of which one is routed
under the interface between the motor housing
and the vacuum pumps/compressor housing,
and the other under the interface between the
motor housing and the fan guard.
When transporting the pump-motor unit, make
sure that attached fittings are not damaged.
WARNING
Danger from tipping loads!
Be sure to observe the routing of the strap
belts under the pump-motor unit, even if the
motor is provided with attachment points such
as transport eyes or eye bolts.
These are solely designed for the separate
transport of the motor, however not for the
different weight distribution that results for the
mounted vacuum pump/mounted compressor,
so that the unit could tip!
610.444430.40.000 10 / 32 © Gardner Denver Deutschland GmbH
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