BUSCH DOLPHIN LN 3001 A Manual de usuario
Installation and
Operating Instructions
DOLPHIN
Liquid Ring Compressors
LN 3001 A
LN 3002 A
VACUUM APP
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2020.04.27
Busch GVT Ltd.
Unit A, Westmere Drive
Crewe, Cheshire CW1 6ZD
United Kingdom
0870223347/-0001_en / Original instructions / Modifications reserved
Table of Contents
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Table of Contents
1 Safety........................................................................................................................... 3
2 Product Description ..................................................................................................... 4
2.1 Operating Principle...............................................................................................5
2.2 Application ........................................................................................................... 5
2.3 Start Controls .......................................................................................................5
3 Transport ..................................................................................................................... 6
4 Storage......................................................................................................................... 6
4.1 Short Term (Up to 3 Months) ...............................................................................6
4.2 Medium Term (3 Months to 6 Months)................................................................7
4.3 Long Term (Over 6 Months).................................................................................7
5 Installation................................................................................................................... 7
5.1 Installation Conditions ..........................................................................................7
5.2 Connecting Lines / Pipes ......................................................................................8
5.2.1 Suction Connection....................................................................................8
5.2.2 Discharge Connection................................................................................8
5.2.3 Operating Liquid Connection.....................................................................9
5.3 Operating Liquid Settings .....................................................................................10
5.4 Fitting the Coupling..............................................................................................10
6 Commissioning............................................................................................................ 11
6.1 Start-Up ...............................................................................................................12
7 Maintenance................................................................................................................ 15
7.1 Maintenance Schedule..........................................................................................15
8 Overhaul...................................................................................................................... 18
9 Decommissioning ........................................................................................................ 18
9.1 Dismantling and Disposal......................................................................................19
10 Spare Parts................................................................................................................... 19
11 Troubleshooting........................................................................................................... 20
12 Technical Data ............................................................................................................. 22
2.2.1 LN Series ...................................................................................................5
13 EU Declaration of Conformity ...................................................................................... 23
7.2 Lubrication ...........................................................................................................16
6.2 Shut-Down ..........................................................................................................14
6.2.1 Regular Shut-Down...................................................................................14
6.2.2 Emergency Shut-Down..............................................................................14
6.1.1 First-Time Start-Up....................................................................................12
6.1.2 Regular Start-Up........................................................................................13
7.2.1 Grease .......................................................................................................16
7.2.2 Oil .............................................................................................................17
5.2.4 Mechanical Seal Connection ......................................................................9
Safety | 1
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1 Safety
Prior to handling the machine, this instruction manual should be read and understood. If
anything needs to be clarified, please contact your Busch representative.
Read this manual carefully before use and keep for future reference.
This instruction manual remains valid as long as the customer does not change anything
on the product.
The machine is intended for industrial use. It must be handled only by technically trained
personnel.
Always wear appropriate personal protective equipment in accordance with the local
regulations.
The machine has been designed and manufactured according to state-of-the-art meth-
ods. Nevertheless, residual risks may remain. This instruction manual highlights potential
hazards where appropriate. Safety notes and warning messages are tagged with one of
the keywords DANGER, WARNING, CAUTION, NOTICE and NOTE as follows:
DANGER
... indicates an imminent dangerous situation that will result in death or serious injuries if
not prevented.
WARNING
... indicates a potentially dangerous situation that could result in death or serious injuries.
CAUTION
... indicates a potentially dangerous situation that could result in minor injuries.
NOTICE
... indicates a potentially dangerous situation that could result in damage to property.
NOTE
... indicates helpful tips and recommendations, as well as information for efficient and
trouble-free operation.
NP
IN
MS
GRP
OPI
OPD2
OUT
OPD1
2 | Product Description
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2 Product Description
NOTE
IN Suction connection
GRP Grease point
NP Nameplate OPD2Operating liquid drain (only for LN 3002 A)
OPI Operating liquid inlet
MS Mechanical seal connection
OUT Discharge connection
NOTE
OPD1 Operating liquid drain
Technical term.
In this instruction manual, we consider that the term ‘machine’ refers to the
‘compressor’.
Illustrations
In this instruction manual the illustrations may differ from the machine appearance.
Product Description | 2
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2.1 Operating Principle
The machine works on the liquid ring principle.
The rotor is positioned centrally in an oval-shaped body.
Upon rotation, which proceeds without metal to metal contact, a ring of liquid is formed
which moves with the rotor and follows the shape of the body.
At the two points of the nearest proximity of the rotational axis and body, the liquid fills
the chambers of the rotor. As rotation proceeds, it follows the contour of the body, and
recedes again, leaving spaces filled by the incomming gas.
The vertical chambers are connected via the distributor porting to the inlet of the
compressor.
As the rotation progresses, the liquid is forced back into the horizontal chambers,
compressing the gas. This gas is forced out of the discharge port and then leaves the
compressor via the outlet flange.
The compressor is fed continuously with liquid which serves to seal the clearances between
inlet and outlet port and remove the heat of compression.
This liquid leaves the compressor together with the gas to be compressed and is separated
from the gas in a discharge separator.
2.2 Application
The machine is intended for the suction of air, vapour and other gases.
For explosive gases and vapours (if a "Ex(inside)" sign is written on the nameplate),
please refer to the ATEX supplement for additional safety information on operation in
hazardous zones.
Conveying of other media leads to an increased thermal and/or mechanical load on the
machine and is permissible only after a consultation with Busch.
The machine is intended for the placement in a non-potentially explosive environment
unless a "Ex(outside)" sign is written on the nameplate, in this case please refer to the
ATEX supplement for additional safety information.
The machine is capable of maintaining ultimate pressure, see Technical Data [►22].
The machine is suitable for continuous operation.
Permitted environmental conditions, see Technical Data [►22].
2.3 Start Controls
The machine comes without start controls. The control of the machine is to be provided
in the course of installation.
2.2.1 LN Series
Dolphin LNs are single-stage or two-stage compressors and operate from
atmospheric pressure to 10 bar discharge pressure.
3 | Transport
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3 Transport
Machine weight:
see the technical data or the nameplate
Use appropriate slings
• Check the machine for transport damage.
If the machine is secured to a base plate:
• Remove the machine from the base plate.
4 Storage
NOTICE
Storage temperature below +5°C.
Risk of damage to the machine!
• Drain the operating liquid from the machine and the system before storage.
• Or add an anti-freeze solution.
After testing, all Busch Dolphin compressors are vented and drained. Pumps contain-
ing ferrous materials are preserved using a combined VPI (Vapour Phase Inhibitor) and
Contact Inhibitor Oil (Vaporol™ or equivalent) at a recommended concentration of 1
litre per m3.
4.1 Short Term (Up to 3 Months)
• Seal all apertures with adhesive tape or provided caps.
If possible:
• Store the machine indoors, dry, dust free and if possible in original packaging
preferably at temperatures between -20 … 60 °C.
WARNING
Suspended load.
Risk of severe injury!
• Do not walk, stand or work under suspended loads.
WARNING
Lifting the machine using the eye bolt.
Risk of severe injury!
• Do not lift the machine using the eye bolt. Only lift the machine as shown.
4.2 Medium Term (3 Months to 6 Months)
• Remove the shaft coupling guard (if not supplied as a bare shaft machine).
• Rotate the machine shaft by hand 5 revolutions monthly to prevent bearing
indentation.
• Leave the shaft at approximately 90 degrees to the original position, using a temporary
mark on the shaft to assist.
• Replace the coupling guard, taking care to align correctly and ensure that all fasteners
are replaced and fully tightened.
4.3 Long Term (Over 6 Months)
If the machine is constructed in cast iron material:
• Fill the pump with a liquid preservative (e.g. ‘Shell Ensis Fluid’) to prevent the machine
from corroding.
• Remove the shaft coupling guard (if not supplied as a bare shaft machine).
•Rotate the machine shaft by hand 5 revolutions monthly to prevent bearing indentation.
• Leave the shaft at approximately 90 degrees to the original position, using a temporary
mark on the shaft to assist.
• Coat the exposed shaft ends and shaft coupling with wax preservative or heavy grease.
• Replace the coupling guard, taking care to align correctly and ensure that all fasteners
are replaced and fully tightened.
5 Installation
5.1 Installation Conditions
NOTICE
Use of the machine outside of the permitted installation conditions.
Risk of premature failure!
Loss of efficiency!
• Take care that the installation conditions are fully complied with.
• Make sure that the environment of the machine is not potentially explosive.
If there is Ex(o) sign written on the nameplate:
• Please refer to the ATEX supplement for additional safety information.
• Make sure that the ambient conditions comply with the Technical Data [►22].
• Make sure that the environmental conditions comply with the protection class of the
motor and the electrical instruments.
• Make sure that the installation space or location is vented such that sufficient cooling
of the machine is provided.
• Make sure that cooling air inlets and outlets of the motor fan are not covered or ob-
structed and that the cooling air flow is not affected adversely in any other way.
• Make sure that enough space remains for maintenance work.
• Make sure that the machine is placed or mounted horizontally on a flat surface.
• Make sure that the machine is connected to an operating liquid system, see Operating
Liquid Connection [►10].
Installation | 5
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5 | Installation
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• Make sure that all provided covers, guards, hoods, etc. are mounted.
In case of a machine delivery without motor:
• Make sure that the coupling is correctly aligned, see Fitting the Coupling [►10].
If the machine is installed at an altitude greater than 1000 meters above sea level:
• Contact your Busch representative, the motor should be derated or the ambient
temperature limited.
5.2 Connecting Lines / Pipes
• Remove all protective covers before installation.
• Make sure that the connection lines cause no stress on the machine‘s connection; if
necessary use flexible joints.
• Make sure that the line size of the connection lines over the entire length is at least as
large as the connections of the machine.
In case of very long connection lines it is advisable to use larger line sizes in order to
avoid a loss of efficiency. Seek advice from your Busch representative.
5.2.1 Suction Connection
NOTICE
Ingress of foreign objects.
Risk of damage to the machine!
If the inlet gas contains foreign solid particles:
• Install a suitable inlet screen (smaller than 0.5 mm mesh size) upstream of the
machine.
Connection size(s):
– 8" DN200- RF
5.2.2 Discharge Connection
NOTICE
Too high elevation or lack of separation.
Will cause back pressure and possible drive motor overload!
• The discharge piping should go horizontal or falling to seperator.
Connection size(s):
– 6" DN150- RF
• Make sure that the discharged gas will flow without obstruction. Do not shut off or
throttle the discharge line.
Installation | 5
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5.2.3 Operating Liquid Connection
The machine cannot be operated without an operating liquid system. The following dia-
grams show examples of typical installations. The actual scope of delivery is always con-
tractually agreed upon.
OPI
OPD2OPD1
OPI Operating liquid inlet OPD2 Operating liquid drain (only for LN 3002 A)
OPD1 Operating liquid drain
Connection size:
Machine type OPI OPD1 OPD2
LN 3001 A ANSI 2" / DIN DN50 - RF ANSI 1" / DIN DN25 - RF
N/A
LN 3002 A ANSI 2" / DIN DN50 - RF ANSI 1" / DIN DN25 - RF ANSI 1" / DIN DN25 - RF
• Make sure that the operating liquid complies with the requirements,
seeOperating Liquid Settings [►10].
5.2.4 Mechanical Seal Connection
The mechanical seal cartridges have threaded connections of R 1/2" or R 3/4".
See separate 'mechanical seal documentation' for details.
5 | Installation
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5.3 Operating Liquid Settings
The value in the table are the maximum settings at higher discharge pressures. Pressure
related lower settings refer to the sealing water graph on the performance curve.
CAUTION
Running the machine in hazardous environment.
Risk damaging the machine and pollution of the environment!
•Install Alarm/ Shut down conditions of the service liquid flow. Refer to the ATEX
attachement
The settings of the service liquid depend on the compressor and the process.
•Compressor: Single stage compressors (LN 3001 A) need less water than double stage
compressors (LN 3002 A).
•Processes demanding low discharge temperature and high performance need more
service water flow than process using 3-phase separators.
Compressor With 3-phase separator
LN 3001 A 20 m³/h
LN 3002 A 25 m³/h
High performance, low temperature
30 m³/h
40 m³/h
5.4 Fitting the Coupling
WARNING
Unprotected coupling.
Risk of severe injury!
• Make sure that the coupling is protected by a cover or a guard.
In case of a machine delivery without motor:
• Fit a suitable coupling that matches with the machine and motor shaft size.
• Make sure that the coupling is sized to withstand the full motor torque.
• Make sure that the coupling is correctly aligned according to the coupling instructions.
• Install a protective cover or a guard.
Machine type Machine shaft size (mm)
LN 3001 A 100
LN 3002 A 115
Coupling options
•cylinder shaft diameter with feather key
•tapered coupling
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