Grundfos BMS Series User manual

BMS
BMS hs, BMS xl, BMS hp, BMSX
Installation and operating instructions
BMS
Installation and operating instructions
Other languages
http://net.grundfos.com/qr/i/98567337
GRUNDFOS INSTRUCTIONS

BMS
English (GB)
Installation and operating instructions ..........................................................4
China RoHS ............................................................................31
Declaration of conformity .................................................................32
Declaration of conformity .................................................................34
Declaration of conformity .................................................................35
Operating manual EAC ...................................................................36
3
Table of contents

English (GB) Installation and operating instructions
Original installation and operating instructions
Table of contents
1. General information ........................4
1.1 Hazard statements..........................4
1.2 Notes ..................................4
2. Product introduction........................5
2.1 Nameplate...............................5
2.2 Pumped liquids ............................5
2.3 Filtration ................................5
2.4 Flushing and salinity .........................6
3. Receiving the product.......................6
3.1 Transporting the product ......................6
3.2 Inspecting the product........................6
4. Installation requirements .....................6
4.1 Reading the guide ..........................6
5. Mechanical installation ......................6
5.1 Foundation ..............................6
5.2 BMS hs and BMS xl pumps ....................6
5.3 BMS hp pump.............................9
5.4 BMSX system............................10
6. Electrical connection ......................11
6.1 Output filters.............................11
6.2 BMS hs and BMS xl pumps ...................11
6.3 BMS hp pump............................11
6.4 BMSX system............................11
7. Commissioning the product ..................12
7.1 Checking the power supply....................12
7.2 BMS hs and BMS xl pumps ...................13
7.3 BMS hp pump............................14
7.4 BMSX system............................16
7.5 Low-pressure flow control ....................18
8. Servicing the product ......................18
8.1 Motor bearings ...........................18
8.2 Preventive maintenance .....................19
9. Starting up after standstill ...................19
9.1 Frequency of starts and stops ..................19
10. Taking the product out of operation .............19
10.1 BMS hs pump............................20
10.2 BMS hp pump............................20
10.3 BMSX system............................21
10.4 Flushing ...............................21
11. Storage ...............................21
12. Fault finding ............................22
12.1 BMS hs................................22
12.2 BMS hp ...............................23
12.3 Pressure exchanger of BMSX ..................24
13. Technical data ...........................25
13.1 Product range............................25
13.2 Sound pressure level, inlet pressure and liquid
temperatures ............................29
14. Disposing of the product ....................30
15. Document quality feedback ..................30
1. General information
Read this document before you install the product.
Installation and operation must comply with local
regulations and accepted codes of good practice.
1.1 Hazard statements
The symbols and hazard statements below may appear in Grundfos
installation and operating instructions, safety instructions and
service instructions.
DANGER
Indicates a hazardous situation which, if not avoided, will
result in death or serious personal injury.
WARNING
Indicates a hazardous situation which, if not avoided,
could result in death or serious personal injury.
CAUTION
Indicates a hazardous situation which, if not avoided,
could result in minor or moderate personal injury.
The hazard statements are structured in the following way:
SIGNAL WORD
Description of the hazard
Consequence of ignoring the warning
• Action to avoid the hazard.
1.2 Notes
The symbols and notes below may appear in Grundfos installation
and operating instructions, safety instructions and service
instructions.
Observe these instructions for explosion-proof products.
A blue or grey circle with a white graphical symbol
indicates that an action must be taken.
A red or grey circle with a diagonal bar, possibly with a
black graphical symbol, indicates that an action must not
be taken or must be stopped.
If these instructions are not observed, it may result in
malfunction or damage to the equipment.
Tips and advice that make the work easier.
4
English (GB)

2. Product introduction
Grundfos BMS and BMSX booster systems are designed for high-
pressure boosting, filtration and desalination of seawater or
brackish water in the so-called SWRO systems (SWRO = Sea
Water Reverse Osmosis). The design of the systems ensures a
high energy recovery.
2.1 Nameplate
16
51
14
1
3
5
6
8
10
12
17
2
4
7
9
11
13
21
27
22
2425
262315
N/A
DK - 8850 Bjerringbro, Denmark
TM086075
Nameplate
Pos. Description
1Rated flow rate (m3/h)
2 Rated flow rate (US GPM)
3 Rated head (m)
4 Rated head (ft)
5 Rated speed
6 Minimum and maximum inlet pressure (bar)
7 Minimum and maximum inlet pressure (PSI)
8 Maximum outlet pressure (bar)
9 Maximum outlet pressure (PSI)
10 Minimum and maximum liquid temperature (°C)
11 Minimum and maximum liquid temperature (°F)
12 Net weight of booster module (Kg)
13 Net weight of booster module (LB)
14 Customer name
15 Minimum efficiency index
16 Type designation
17 Product variant
21 CE mark
22 Approval EAC
23 CN RoHS
24 WEEE marking
25 Morocco approval marking
26 UKCA approval marking
27 RCM approval marking
51
Model designation:
• generation
• product number
• production code:
- production site code
- production year and week (YYWW)
- serial number
2.2 Pumped liquids
The pumps are suitable for pumping thin, non-explosive liquids, not
containing solid particles or fibres. The liquid must not chemically
attack the pump materials. In case of doubt, contact Grundfos.
The pumps must never operate with water or liquid containing
substances which would remove the surface tension, for example
soap. If you use this type of detergent to clean the system, the
water or liquid must be led around the pumps via a bypass.
Do not use the pumps for pumping flammable or
combustible liquids such as diesel oil, petrol or similar
liquids.
2.3 Filtration
Filter the raw water as described in the table below.
Pump type Filter
[micron absolute]
BMS hs 30
BMS hp 30
BMS xl 30
Pressure exchanger
BMSX (≤ PX 180) 5
BMSX (> PX 180) 10
3
4
6
7
1
2
5
TM058862
Filtration
Pos. Description
1 Pressure gauge (fresh-water pump)
2 Fresh-water flush pump
3 Raw-water feed pump
4 Pressure gauge (raw water)
5 Filter
6 Flowmeter
7 Low-pressure switch
5
English (GB)

2.4 Flushing and salinity
When the booster system is stopped, it is very important to flush the
system according to these guidelines.
Flush the pump to prevent stagnant seawater which can
start corrosion inside the pump. When flushing, BMS 7-42
must operate at minimum speed. For bigger sizes
operating at minimum speed is recommended.
See also periods of inactivity in the section on starting up after
standstill.
Pump type
Fresh water
pmin
[bar]
Max. salinity
[ppm TDS] 1)
Flushing time
[min.]
BMS hs
1 1000
Depends on
pressure, flow,
water quality and
system design and
size.
BMS xl
BMS hp
Pressure
exchanger of
BMSX
1) TDS: Total dissolved solids
Related information
9. Starting up after standstill
3. Receiving the product
During delivery and storage, never preserve the pumps
with glycerine or similar liquids which are aggressive to
the pump materials.
3.1 Transporting the product
The pumps are supplied from the factory in proper packaging in
which they must remain until installation.
3.2 Inspecting the product
1. Check that the pump has not been damaged during
transportation.
2. Check that the type designation corresponds to the order. See
the pump nameplate.
3. Compare the motor voltage and frequency details on the motor
and frequency converter nameplates with the power supply
available.
4. Installation requirements
4.1 Reading the guide
When installing the products, follow the steps below. Note that the
steps might differ from product to product.
1. Mechanical installation.
2. Electrical connection.
3. Commissioning.
5. Mechanical installation
5.1 Foundation
Construct the foundation to safely support the booster system or
pumps under all conditions. The pump and motor must be installed
on the same level.
The foundation must be strong enough to support the weight of both
units.
5.1.1 Vibration dampening
Use the vibration dampers supplied with the BMS hs pump.
5.2 BMS hs and BMS xl pumps
The pump can be mounted directly on the floor or on a base frame
(accessory).
TM059569
BMS hs pump
5.2.1 Location
To ensure sufficient cooling of the motor, leave a free space of
minimum 100 mm behind the non-drive end of the motor.
5.2.2 Lifting and handling the motor
Use straps when lifting the motor, and lower it down slowly.
WARNING
Falling objects
Death or serious personal injury
‐Observe local regulations concerning limits for manual
lifting or handling.
‐Use straps on the motor, and do not lift in the fan
guard.
‐Make sure that the crane is suitable for the job. Use
certified and approved lifting equipment. See the
nameplate.
TM059235
Example of how to lift the motor
If you do not follow these instructions, there is a risk of
warping or crushing some of the equipment such as the
terminal box, cover or drip cover.
6
English (GB)

5.2.3 Motor installation
Use vibration dampers.
The motor must be levelled. If there is a gap between the
foundation and the motor, use a spirit level, a feeler gauge and
shims to level the motor. Then secure the motor by means of
suitable screws depending on the foundation.
5.2.4 Direction of rotation
WARNING
Electric shock
Death or serious personal injury
‐The electrical installation must be carried out by an
authorised person in accordance with local
regulations.
Connect the power supply, and check the direction of rotation. See
the section on electrical connections. The direction of rotation must
correspond to the direction under normal operation. See the
installation and operating instructions for the motor.
5.2.5 Lifting and handling the bare-shaft pump
Hoist the bare-shaft pump into place, and lower it down slowly.
TM059236
How to lift the pump
To make the pump fit the motor flange, fit the pump support foot
delivered with the product. Lower the pump until the support foot
reaches the floor.
5.2.6 Assembling the motor and the pump
When assembling the pump and the motor, make sure the
inlet pipe points up towards position 12 o'clock and the
drain holes point downwards. The spline couplings must
be aligned when the pump and the motor are joined and
the two parts must be connected gently and carefully.
If necessary, you can change the position of the inlet pipe later. See
the section on the positions of the inlet pipe.
TM060964
Position of inlet pipe (left) and drain holes (right). Note that BMS xl
has no drain holes.
Assemble the motor and the pump before you tighten the screws.
To ensure correct installation, follow this procedure.
1. Fit all four screws for motor and pump connection. Do not
tighten the screws yet.
TM059234
2. Adjust the gap by means of a feeler gauge or similar tool.
Tighten one screw by hand.
TM059232
3. Adjust the gap 180° opposite the screw you just tightened. Do
not tighten the screw. Move the pump to adjust the gap.
TM059351
4. Move the pump, and adjust the gap by means of the feeler
gauge. Tighten the screw by hand. If the inlet pipe has to be
turned, see the section on the position of the inlet pipe.
TM059345
5.
a. All pumps, excluding BMS hs 7-42: when the gap has been
adjusted, cross-tighten all screws to 33 Nm.
TM059346
b. BMS hs 7-42: tighten the M8 screw marked in the photo to 24
Nm and all other screws to 33 Nm.
TM077965
7
English (GB)

6. Fasten the support foot to the foundation.
TM081934
Make sure the support foot does not impose any tension
on the pump.
Related information
5.2.7 Positioning the inlet pipe
5.2.7 Positioning the inlet pipe
Make sure that the installation steps 1-3 are done before the inlet
pipe position is changed. See the section on assembling the motor
and the pump.
To change the position of the pipe, follow this procedure.
For BMS xl, follow the guide for BMS hp, and see the section on the
position of the inlet pipe.
1.
a. All pumps, excluding BMS hs 7-42: mark up the pump sleeve
and union nut, then loosen the screws.
TM059573
b. BMS hs 7-42: mark up the pump sleeve and union nut, then
loosen the screws.
TM077904
2. Turn the inlet pipe to the required position, and make sure the
union nut follows.
TM059343
3. Check that the markings are aligned.
TM059342
4.
a. Fit all screws again. All pumps excluding BMS hs 7-42:
tighten all screws to 33 Nm.
TM081933
b. BMS hs 7-42: tighten the M8 screw marked in the photo to 24
Nm and all other screws to 33 Nm.
TM077965
5. Fasten the support foot to the foundation.
TM081934
6. Check that the drain holes are positioned correctly. Note that
BMS hs 7-42 has no drain holes.
TM065336
Related information
5.2.6 Assembling the motor and the pump
5.3 BMS hp pump
5.3.3 Positioning the inlet pipe
5.2.8 Flushing the system
To avoid impurities in the pump, flush the pipes before you
connect the pump inlet and outlet pipes.
5.2.9 Pipe connection
Both the inlet and the outlet pipes are fitted with clamp liners for
Victaulic couplings and must be supported close to the end of the
pipe.
TM059230
Pipe support
8
English (GB)

WARNING
Pressurised system
Death or serious personal injury
‐Avoid stress in the pipe system.
When fitting the Victaulic couplings, allow a gap of 3.5 mm between
the two pipes.
3.5 mm 3.5 mm
3.5 mm
1
TM059344
Gap between the pipes and (1) service connector
5.2.10 Service connector installation
To facilitate service of the pump and motor, install the delivered
service connector in the system. This is advantageous because
with it, the pump can be pulled away from the motor and the thrust
bearing and shaft seal can be changed without moving any other
pipes or the motor.
1. Fit the two rubber parts.
2. Install the service connector.
TM059339
Position of rubber parts
3. Move the two rubber parts over the service connector.
TM059340
Position of service connector and rubber parts
4. Fit the Victaulic couplings and tighten the bolts to 33 Nm.
TM059341
Victaulic couplings
In case of a BMS hs or BMS xl pump, you are now ready for
electrical connection. See the section on the BMS hs and BMS xl
pumps.
In case of a BMSX system, see the section on the BMS hp pump
installation.
Related information
5.3 BMS hp pump
6.2 BMS hs and BMS xl pumps
5.3 BMS hp pump
TM061045
BMS hp pump
5.3.1 Motor and pump installation
We recommend that you use vibration dampers.
The pump and the motor must be installed on the same level. If
there is a gap between the foundation and the motor or the pump,
use a spirit level, a feeler gauge and shims to level the motor. Then
secure the motor and the pump by means of suitable screws
(4 × M10) depending on the foundation.
5.3.2 Lifting and handling the pump
Hoist the pump into place.
WARNING
Falling objects
Death or serious personal injury
‐Observe local regulations concerning limits for manual
lifting or handling.
‐Use straps for lifting the pump, and do not lift in the fan
guard.
‐Use certified and approved lifting equipment. See the
nameplate.
TM073141
Example of how to lift the pump
5.3.3 Positioning the inlet pipe
To change the position of the BMS hp or BMS xl pipe, follow this
procedure.
9
English (GB)

1. Loosen all bolts in the flange.
TM060962
2. Turn the inlet pipe to the required position. Tighten all screws to
33 Nm.
TM060963
3. Check the position of the drain holes, they must point
downwards. Note that BMS xl has no drain holes.
TM065336
5.3.4 Flushing the system
To avoid impurities, flush the pipes before you connect the
pump inlet and outlet pipes.
5.3.5 Pipe connection
Both the inlet and the outlet pipe are fitted with clamp liners for
Victaulic couplings and must be supported close to the end of the
pipe.
TM060959
Pipe support
WARNING
Pressurised system
Death or serious personal injury
‐Avoid stress in the pipe system.
When fitting the Victaulic couplings, allow a gap of 3.5 mm between
the two pipes.
3.5 mm
3.5 mm
TM060960
Gap between the pipes
5.4 BMSX system
A BMSX system consists of a BMS hs or a BMS xl pump as a high-
pressure pump and a BMS hp pump as a booster pump. The
pressure exchanger of BMSX is installed in order to recover energy
from the high-pressure concentrate.
TM082092
BMSX system
For the installation of the BMS hs or the BMS xl pump, see the
section on BMS hs and BMS xl pumps.
For the installation of the BMS hp pump, see the section on BMS hp
pump.
Related information
5.2 BMS hs and BMS xl pumps
5.3 BMS hp pump
5.4.1 Lifting and handling the pressure exchanger of BMSX
GR-1015354
Pressure exchanger of BMSX
WARNING
Falling objects
Death or serious personal injury
‐Observe local regulations concerning limits for manual
lifting or handling.
‐Make sure that the crane is suitable for the job. Use
certified and approved lifting equipment. See the
nameplate.
Use suitable straps when lifting the unit. Carefully hoist the pressure
exchanger into place, and lower it down. Secure the unit or units to
a frame, and ensure a stress-free installation.
To avoid internal damage, do not lift the pressure
exchanger by the ports or put undue strain on the port
fittings.
5.4.2 Flushing the system
Thoroughly flush associated pipes with water filtered to 5
microns before installing the PX unit. Foreign material
may cause damage.
5.4.3 Pipe connection of the pressure exchanger
Low-pressure and high-pressure inlet and outlet pipes are fitted with
clamp liners for Victaulic couplings. See the pipe location on the
unit.
10
English (GB)

Both the inlet and outlet pipes must be supported close to the end
of the pipes.
TM059348
Horizontal and vertical support of pipes
WARNING
Pressurised system
Death or serious personal injury
‐Avoid stress in the pipe system.
When fitting the Victaulic couplings, allow a gap of 3.5 mm between
the two pipes. See the section on pipe connection.
The PX unit must not be supported by its pipe fittings nor
must the PX unit be allowed to support pipes or manifolds.
Related information
5.3.5 Pipe connection
6. Electrical connection
DANGER
Electric shock
Death or serious personal injury
‐Connect the pump to an external main switch placed
close to the pump and to a motor-protective circuit
breaker or a frequency converter.
‐It must be possible to lock the main switch in OFF
position (isolated). Type and requirements as specified
in EN 60204-1, 5.3.2.
‐The pump must be earthed.
DANGER
Electric shock
Death or serious personal injury
‐Before starting any work on the product, make sure
that the power supply has been switched off and that it
cannot be accidentally switched on.
The electrical connection must be carried out by an authorised
electrician in accordance with local regulations and the wiring
diagrams for the motor protection, starter and monitoring devices
used. Make the electrical connections in the terminal box.
Wiring must be done according to the wiring diagram supplied with
the Grundfos product.
6.1 Output filters
Output filters are used primarily to protect the motor against
overvoltage and increased operating temperature. However, you
can also use output filters to reduce acoustic noise from the motor.
Grundfos offers two types of output filter as accessories for CUE:
• dU/dt filters
• sine-wave filters.
6.1.1 Use of output filters
The motors used for BMS pumps are designed for a maximum
supply voltage to the frequency converter of 480 V. If the supplied
voltage is higher, we recommend installing an output filter between
the frequency converter and the motor.
The motors used for BM pumps are designed for a maximum
supply voltage to the frequency converter of 480 V. If the supplied
voltage is higher, we recommend installing an output filter between
the frequency converter and the motor.
The selection depends on these factors:
• pump type
• motor cable length
• the required reduction of acoustic noise from the motor.
6.1.2 Cables used in CUE installations
We recommend using screened cables and output filters in EMC-
sensitive sites when CUE is installed in connection with BMS
pumps.
A B B
D E C
TM086024
Example of an installation in EMC-sensitive sites
Pos. Description
A Mains cable, unscreened
B Screened cable
C BMS pump
D CUE
E Filter
Screened cables and output filters are required in those parts of the
installation where the surroundings must be protected against EMC.
6.2 BMS hs and BMS xl pumps
Mains and signal cables
See the quick guide or installation and operating instructions for the
drive or the motor.
In case of a BMS hs or BMS xl pump, you are now ready for
commissioning.
Related information
7.2.1 Before startup
6.3 BMS hp pump
See the quick guide or installation and operating instructions
supplied with the product.
See the nameplate to identify the motor type and type of control
board.
Default settings for the BMS hp motor:
• minimum speed: 1700 rpm
• maximum speed: 3600 rpm
• setpoint input: 4-20 mA
• relay: alarm.
If not controlled by a 4-20 mA signal, the external setpoint
input must be disabled by the remote control.
6.4 BMSX system
For electrical installation, see the sections on the BMS hs, BMS xl
and BMS hp pumps.
Related information
6.2 BMS hs and BMS xl pumps
6.3 BMS hp pump
11
English (GB)

7. Commissioning the product
These commissioning guidelines concern both fresh-water
installations and systems for desalination.
WARNING
High sound pressure level
Death or serious personal injury
‐Use hearing protection.
WARNING
Pressurised system
Death or serious personal injury
‐Be aware of pressurised pipe systems even after
shutdown.
Commissioning of BMSX booster systems must be performed by
Grundfos technicians or by audited partners acting as service
suppliers for Grundfos.
Furthermore, we recommend that the commissioning of BMS hs,
BMS xl and BMS hp systems is performed by Grundfos technicians
or audited partners.
Commissioning includes report and on-site training of the people
who will be responsible for maintaining and monitoring the system.
Related information
5.4 BMSX system
7.1 Checking the power supply
1. Supply voltage
1
2
3
TM001371
Measure the voltage between the phases
with a voltmeter.
Connect the voltmeter to the terminals of
the frequency converter.
When the motor is loaded, the voltage must be within ± 5 % of the rated
voltage. If the voltage varies more than that, the motor may burn.
If the voltage is constantly too high or too low, replace the motor with a motor
that corresponds to the supply voltage.
Large variations in the supply voltage indicate a poor power supply, and you
must stop the pump until the defect has been found.
It may be necessary to reset the frequency converter.
2. Current
consumption
TM001372
Measure the current of each phase while
the pump is operating at a constant outlet
pressure, if possible at the performance
where the motor is most heavily loaded.
For information on the normal operating
current, see the nameplate of the motor.
The difference between the current of the phase with the highest current
consumption and the one with the lowest current consumption must not
exceed 10 % of the lowest current consumption.
If it does, or if the current exceeds the full-load current, check these possible
faults:
• A damaged pump is causing the motor to be overloaded. Pull the pump
out of the sleeve for overhaul.
• The motor windings are short-circuited or partly disjointed. The motor
must be repaired.
• Too high or too low supply voltage.
• Poor connection in conductors. Weak cables. Replace cables if
necessary.
In case a further motor check is required, proceed as follows:
• BMS hs or BMS xl with PM or AC motor: Disconnect the
frequency converter and lock the shaft of the PM motor. Even
unpowered, a motor with permanent magnets will generate
voltage if rotated.
• BMS hp with MG or MGE motor: Follow the instructions in the
installation and operating instructions for the MG or MGE motor.
12
English (GB)

7.2 BMS hs and BMS xl pumps
7.2.1 Before startup
Follow these instructions to ensure correct startup of the BMS
hs and BMS xl pumps.
WARNING
Description of hazard
Death or serious personal injury
‐Make sure that the pump and the system are fully
vented before startup.
For type, amount and interval of greasing, see the
nameplate on the motor.
Check that the power supply is according to the nameplate.
Using a sine-wave filter is strongly recommended to avoid
overheating and potential damage to the product.
1
2
3
4
5
6
789
11
12
10
A
TM061077
Example of a BMS hs pump
Pos. Description
A Built-in non-return valve
1 Raw-water feed pump
2 Pressure gauge (raw water)
3 Filter
4 Low-pressure switch
5 Flowmeter
6 BMS hs pump with built-in non-return valve
7 High-pressure switch
8 Pressure gauge (BMS hs outlet pressure)
9 Vent
10 Pressure-relief valve
11 Pressure gauge (fresh-water pump)
12 Fresh-water flush pump
2) A fresh-water flush pump must be installed in systems for seawater
desalination or similar systems.
Related information
6.1 Output filters
7.2.2 Startup
If an outlet valve is installed, we recommend that you open the
valve 1/4 of a turn when starting the pump or system.
Do not operate pumps against a closed valve.
To start up a BMS hs or BMS xl pump, proceed as follows:
1. Start the feed pump (1), and check that the inlet pressure (2) of
the pump (6) is higher than 1.0 bar and lower than 35.0
bar. Note that this limitation is only for the startup phase. Once
the pump is running, the maximum inlet pressure can be higher.
See the pump specific values in the section on product range.
2. Vent the pump (6).
3. Start the pump (6). Ramp up the pump (6) according to factory
settings. See the figure below (1 and 2).
Ramp up from 0 to 1700 rpm within three seconds.
2
3
14
rpm
1700
3s t[s]
TM061079
Ramping up, BMS hs or BMS xl
Ramp-up time:
• Ramp-up: from 0 to 1700 rpm, maximum 3 seconds.
• Ramp-up: from 1700 rpm to maximum speed, to be
configured by the customer.
• Ramp-down: from maximum speed to 1700 rpm, to be
configured by the customer.
• Ramp-down: from 1700 to 0 rpm, maximum 3 seconds.
4. Set the outlet pressure of the pump (8) to the desired value.
5. Check that the inlet pressure (2) of the pump is higher than 1.0
bar and lower than 35.0 bar. Note that this limitation is only for
the startup phase. Once the pump is running, the maximum inlet
pressure can be higher. See the pump specific values in the
section on product range.
Make sure that the pump is protected against dry running.
Do not touch electrical connections if the pump has
reverse flow.
Related information
7.2.1 Before startup
13.1.1 BMS hs PM booster system
13
English (GB)

7.2.3 Operating limits
We recommend that you always keep the capacity of the booster
systems within the recommended flow rate and pressure range of
each individual pump.
Note that if there is a risk of exceeding the maximum inlet or outlet
pressure, we recommend that you install a safety valve.
BMS hs
Recommended flow rate at 25 °C (77 °F)
Type [m3/h] US [gpm]
BMS hs 7 5-15 22-66
BMS hs 18 6-40 17.6 - 176
BMS hs 30 7-75 31-330
BMS hs 46 11-110 48.2 - 482
BMS hs 60 12-120 53-530
Recommended pressure
Type
Inlet pressure Outlet
pressure
Min.
[bar]
Min.
[psi]
Max.
[bar]
Max.
[psi]
Max.
[bar]
Max.
[psi]
BMS hs 7 1 14.5 20 290.1 82.7 1200
BMS hs 18 1 14.5 65 942 82.7 1200
BMS hs 30 1 14.5 65 942 82.7 1200
BMS hs 30 1 14.5 65 942 82.7 1200
BMS hs 46 1 14.5 65 942 82.7 1200
BMS hs 60 1 14.5 65 942 82.7 1200
BMS xl
Recommended flow rate at 25 °C (77 °F)
Type [m3/h] US [gpm]
BMS xl 125 22-220 97-969
BMS xl 160 28-280 123-1233
BMS xl 215 40-400 176-1761
Recommended pressure
Type
Inlet pressure Outlet
pressure
Min.
[bar]
Min.
[psi]
Max.
[bar]
Max.
[psi]
Max.
[bar]
Max.
[psi]
BMS xl 125 1 14.5 30 435 82.7 1200
BMS xl 160 1 14.5 30 435 82.7 1200
BMS xl 215 1 14.5 30 435 82.7 1200
Related information
13.2 Sound pressure level, inlet pressure and liquid temperatures
7.3 BMS hp pump
7.3.1 Before startup
Follow these instructions to ensure correct startup of the BMS hp
pump.
WARNING
Description of hazard
Death or serious personal injury
‐Make sure that the pump and the system are fully
vented before startup.
For type, amount and interval of greasing, see the
nameplate on the motor.
Check that the power supply is according to the nameplate.
1
2
3
4
5
6
78
9
11
12
10
TM061078
Example of a BMS hp pump
Pos. Description
1 Raw-water feed pump
2 Pressure gauge (raw water)
3 Filter
4 Low-pressure switch
5 Flowmeter
6 BMS hp pump
7 High-pressure switch
8 Pressure gauge (BMS hp outlet pressure)
9 Vent
10 Pressure-relief valve
11 Pressure gauge (fresh-water pump)
12 Fresh-water flush pump
3) A fresh-water flush pump must be installed in systems for seawater
desalination or similar systems.
BMS hp pumps with the motor sizes mentioned below
must have lower inlet pressure during startup.
The motor sizes and maximum inlet pressure during startup can be
found below.
Maximum inlet pressure during startup
[bar]
MG motors size
3.0 kW 60
MGE motors size
3.0 kW 15
5.5 kW 30
7.5 kW 40
11.0 kW 55
14
English (GB)

7.3.2 Startup
If an outlet valve is installed, we recommend that you open the
valve 1/4 of a turn when starting the pump or the system.
Do not operate pumps against a closed valve.
To start up a BMS hp pump, proceed as follows:
1. Start the feed pump (1), and check that the inlet pressure (2) of
the BMS hp pump (6) is higher than 0.5 bar (6" BMS hp) or 1.0
bar (8" BMS hp).
2. Vent the pump.
3. Start the pump.
4. Ramp up the pump according to factory settings. See the figure
below (1).
Ramp up from 0 to 1700 rpm within three seconds.
2
3
14
rpm
1700
3s t[s]
TM061079
Ramping up, BMS hp
Ramp-up time:
• Ramp-up: from 0 to 1700 rpm, maximum 3 seconds.
• Ramp-up: from 1700 rpm to maximum speed, to be
configured by the customer.
• Ramp-down: from maximum speed to 1700 rpm, to be
configured by the customer.
• Ramp-down: from 1700 to 0 rpm, maximum 3 seconds.
5. Set the outlet pressure of the pump to the desired value.
6. Check that the inlet pressure of the pump is higher than 0.5 bar
(6" BMS hp) or 1.0 bar (8" BMS hp) and lower than 82.7 bar.
Make sure that the BMS hp pump is protected against dry-
running.
Related information
7.3.1 Before startup
7.3.3 Operating limits
We recommend that you always keep the capacity of the booster
systems within the recommended flow rate and pressure range of
each individual pump.
Note that if there is a risk of exceeding the maximum inlet or outlet
pressure, we recommend that you install a safety valve.
BMS hp
Recommended flow rate at 25 °C (77 °F)
Type [m3/h] US [gpm]
BMS hp 18-3, 18-5, 18-7 10-26 44 - 114.5
BMS hp 30-3, 30-5, 30-7 19-45 83.7 - 198
BMS hp 46-2, 46-4, 46-6A 28-72 123-317
BMS hp 60-2, 60-4, 60-6 37-90 163 - 396.3
BMS hp 77-2, 77-3 47-120 207-528
BMS hp 95-3 57-143 251-629
BMS hp 125-2 75-187 330-823
BMS hp 160-2 90-215 396-946
BMS hp 215-1 115-310 506-1364
Recommended pressure
Type
Inlet pressure Outlet
pressure
Min.
[bar]
Min.
[psi]
Max.
[bar]
Max.
[psi]
Max.
[bar]
Max.
[psi]
BMS hp 18-3,
18-5, 18-7 1 14.5 80 1160 82.7 1200
BMS hp 30-3,
30-5, 30-7 1 14.5 80 1160 82.7 1200
BMS hp 46-2,
46-4, 46-6A 1 14.5 80 1160 82.7 1200
BMS hp 60-2,
60-4, 60-6 1 14.5 80 1160 82.7 1200
BMS hp 77-3 1 14.5 80 1160 82.7 1200
BMS hp 95-3 1 14.5 80 1160 82.7 1200
BMS hp 125-2 1 14.5 80 1160 82.7 1200
BMS hp 160-2AA 1 14.5 80 1160 82.7 1200
BMS hp 215-1 1 14.5 80 1160 82.7 1200
Note that higher pressure is available on request.
Related information
13.2 Sound pressure level, inlet pressure and liquid temperatures
15
English (GB)

7.4 BMSX system
7.4.1 Flow control and balancing
Flow rates and pressures in a typical BMSX system vary slightly
over the life of the system due to temperature variations, membrane
fouling and feed salinity variations. The rotor of the pressure
exchanger is powered by the flow of fluid through the unit. The
speed of the rotor is self-adjusting over the operating range of the
pressure exchanger pump.
7.4.2 Before startup
Follow these instructions to ensure correct startup of the BMSX
system.
WARNING
Description of hazard
Death or serious personal injury
‐Make sure that the pump and the system are fully
vented before startup.
1. See the sections on BMS hs pumps and BMS hp pumps.
2. Check that the installation corresponds to the diagram.
A pressure gauge must be installed near each pipe
connection of the PX unit or PX unit array to facilitate
monitoring of PX unit performance.
1
2
4
15
14
13
11
7
8910
17
18
12
20
21
23
22
16
5
6
24
25
26
319
A
TM059617
Example of a BMSX booster system
Pos. Description
A Built-in non-return valve
1 Raw-water feed pump
2 Filter
3 Low-pressure switch
4 Flowmeter
5 Pressure gauge (raw water)
6 BMS hs or xl pump with built-in non-return valve
7 Pressure gauge (BMS hs or xl outlet pressure)
8 Vent
9 High-pressure switch
10 Pressure relief valve
11 Pressure gauge (BMS hp inlet pressure)
12 Pressure gauge (BMS hp outlet pressure)
13 BMS hp pump
14 Flowmeter (high-pressure raw water)
15 Pressure gauge (low-pressure raw water)
16 Flowmeter (low-pressure raw water)
17 Membrane filter
18 Permeate
19 Cleaning flush valve
20 Pressure gauge (high-pressure concentrate)
21 Pressure gauge (low-pressure concentrate)
22 Pressure exchanger
23 Concentrate valve
24 Pressure gauge (fresh water)
25 Fresh-water flush pump
26 Flowmeter for permeate
Related information
5.2 BMS hs and BMS xl pumps
5.3 BMS hp pump
16
English (GB)

7.4.3 Startup
To start up a BMSX system, proceed as follows:
1. All valves must be in their normal operating positions.
2. Start the raw-water feed pump (1). When the raw-water feed
pump is started, the system is filled with water. Make sure that
the entire system is vented. The feed flow (14) through the
pressure exchanger (22) may or may not cause the rotor to
begin rotating. Rotation will be confirmed by a humming noise.
3. Adjust the flow rate and pressure within the maximum and
minimum values stated on the PX nameplate.
Never operate the main high-pressure pump without
the BMS hp pump. An interlock must be installed, so
the high-pressure pump will automatically shut down if
the booster pump shuts down.
1
2
4
15
14
13
11
7
89
17
18
19
12
20
21
23
22
16
5
6
24
25
26
10
A
3
TM059619
Starting the seawater feed pump
See the description of the position numbers in the section on
before startup.
4. Adjust the concentrate valve (23) to the system flow.
5. Vent the system.
6. When you have filled the system with water and vented it, see
the BMS hp startup procedure.
The maximum flow rate of the pressure exchanger
must never be exceeded. See the nameplate of the
pressure exchanger.
WARNING
Pressurized system
Death or serious personal injury
‐The BMS hp pump must not run against a closed
outlet valve for more than 5 seconds.
‐Ensure a minimum liquid flow through the pump by
connecting a bypass or drain to the outlet side of
the pump. The drain can be connected to a tank.
7. Start the BMS hp pump (13). See the section on startup in the
section on BMS hp pumps.
1
2
4
15
14
13
11
7
89
17
18
19
12
20
21
23
22
16
5
6
24
25
26
10
A
3
TM059620
System pressure and flow, BMS hp
See the description of the position numbers in the section on before
startup.
The rotor speed will increase, and remaining air will be released
from the pressure exchanger. Vent any remaining air from the
system.
Adjust the frequency converter of the BMS hp pump (13) on the
outlet side of the pressure exchanger (22) until the low-pressure
seawater inlet flow (16) equals the calculated seawater flow (14).
To achieve a balanced flow rate through the pressure exchanger
(22), use the flowmeters installed on the low-pressure seawater
inlet pipe (16) and the high-pressure seawater pipe (14). All flow
rates in and out of the pressure exchanger (22) must be balanced
to within 5 % for optimum operation.
Operating the pressure exchanger with unbalanced flow
rates may result in contamination of the seawater feed by
the concentrate and consequently lower efficiency.
A lower flow rate in the seawater inlet than the seawater outlet will
result in lower permeate quality, increased feed pressure and higher
energy consumption. We recommend that you use a slightly
oversized BMS hp pump (13) to handle projected membrane
concentrate flows, taking seasonal variations, membrane fouling
and manifold losses into account. The flow rate and pressure of the
BMS hp pump (13) must be controlled with a frequency converter.
Neither the low-pressure nor the high-pressure flow
through the pressure exchanger must ever exceed the
rated maximum flow rate. The only reliable way to
determine the flow rates is to use a low-pressure
flowmeter (16) or a high-pressure flowmeter (14),
respectively.
To start up a BMS hs pump (6), proceed as follows: see the section
on startup in the section on BMS hs pumps.
17
English (GB)

1
2
4
15
14
13
11
8
79
17
18
19
12
20
21
23
22
16
5
6
24
25
26
10
A
3
TM059618
System in operation
See the description of the position numbers in the section on before
startup.
The BMSX system pressure will increase. The sound pressure level
from the pressure exchanger (22) will increase. Small variations in
the sound pressure level and rotor speed are normal.
Related information
7.2.2 Startup
7.3.2 Startup
7.4.2 Before startup
7.5 Low-pressure flow control
The concentrate valve (23) on the outlet side of the system must be
adjusted to control the flow rate of the low-pressure seawater inlet
(16) and low-pressure concentrate outlet (21) with a minimum back
pressure of 1 bar. This valve (23) also adds back pressure on the
pressure exchanger (22) required to prevent destructive cavitation.
The low-pressure seawater inlet flow rate (16) equals the high-
pressure concentrate inlet flow rate (14).
8. Servicing the product
DANGER
Magnetic field
Death or serious personal injury
‐Dismantling of the PM motors used for the BMS HS-E-
C-P-A pumps must not be carried out by people with
pacemakers or any other implanted medical devices.
The rotor contains a very powerful magnetic field,
which can affect pacemakers or disturb digital devices.
Check the following at suitable intervals, preferably daily:
• flow rate and pressure
• noise level.
We recommend that you write the operating data in a log book as
they may be useful in connection with maintenance to see any
variation in the pump performance and be able to react to this.
Temperature variations can cause condensation inside the
motor. We recommend that you remove the motor drain
plug to let condensation water escape.
During prolonged storage or downtime, the interval
between two greasing operations must never exceed 6
months.
8.1 Motor bearings
The pumps are factory-fitted with a manual motor-bearing greasing
system. See the motor nameplate or the installation and operating
instructions supplied with the motor for information such as
greasing intervals.
8.1.1 Type of grease
See the motor nameplate.
Avoid mixing greases.
18
English (GB)

8.2 Preventive maintenance
The preventive maintenance tasks recommended in this section are
common for all systems and for average operating conditions. In
case the operating conditions are unfavourable, the maintenance
tasks must be performed more frequently, and they can vary from
installation to installation, for instance due to unexpected changes
of the raw-water quality.
Check for leaks, noise
or abnormal vibrations
Check thrust bearing
and shaft seal
Lubricate motor
bearings
Replace motor
bearings
BMS hs (with PM motor)
Weekly
No preventive
maintenance required According to motor nameplate
BMS hs (with AC motor)
BMS xl
BMS hp
Pressure exchanger of BMSX No preventive maintenance required
4) Use one gasket kit every time a pressure exchanger is opened for inspection.
For further information on maintenance and service, refer to the
separate documents supplied for each component and to Grundfos
Product Center.
9. Starting up after standstill
Follow the normal startup procedure step by step. For greasing of
motor bearings, see the section on motor bearings.
Related information
8.1 Motor bearings
9.1 Frequency of starts and stops
We recommend the following frequency of starts and stops:
• minimum once per year
• maximum 5 times per hour
• maximum 20 times per day.
10. Taking the product out of operation
Before periods of inactivity, take various precautions to protect the
system.
The specific precautions to be taken appear from the table:
Action
Period of inactivity
More than 6
hours
More than 1
month
Flush the pump. x x
Fill the pump with fresh water. x x
Preserve the pump. x
5) Use the same solution that is used to preserve the membranes.
For more details, see the section on flushing and salinity.
Flush the pumps to prevent stagnant seawater which can
start corrosion inside the pump.
Related information
2.4 Flushing and salinity
19
English (GB)

10.1 BMS hs pump
This procedure describes how to shut down the BMS hs pump.
1
2
3
4
5
6
789
11
12
10
B
A
TM1040026
Example of a BMS hs pump
Pos. Description
A Built-in non-return valve
B 1000 ppm TDS
Procedure
1. Ramp down the BMS hs pump (6) according to the factory
settings. See the figure below (3 and 4).
2
3
14
rpm
1700
3s t[s]
TM061079
Ramp down
Ramp down from 1700 to 0 rpm in three seconds.
2. Stop the feed pump (1).
3. Start the fresh-water flush pump (12), and flush the system with
fresh water (11), minimum 2 bar for flushing.
4. Flush the system until the salinity is lower than 1000 ppm
TDS. When flushing, BMS 7-42 must operate at minimum
speed. For bigger sizes operating at minimum speed is
recommended.
5. Stop the fresh-water pump (12).
6. Close all valves to keep the fresh water in the system during the
shutdown.
Only flush desalination systems pumping seawater or similar
aggressive liquids.
To flush the thrust bearing of the BMS hs pump, start the
pump for 30 seconds to allow the fresh water to enter into
the thrust bearing.
If the flushing takes more than 10 minutes, reduce the
flow rate to maximum 10 % of the rated flow rate.
During periods of inactivity, fill the pump with clean fresh
water.
10.2 BMS hp pump
This procedure describes how to shut down the BMS hp pump.
1
2
3
4
5
6
78
9
11
12
10
TM061078
Example of a BMS hp system
Procedure
1. Ramp down the BMS hp pump (6) according to the factory
settings. See the figure below (3 and 4).
2
3
14
rpm
1700
3s t[s]
TM061079
Ramp down
Ramp down from 1700 to 0 rpm in three seconds.
2. Stop the feed pump (1).
3. Start the fresh-water flush pump (12), and flush the system with
fresh water (11), minimum 2 bar for flushing.
4. Flush the system until the salinity is lower than 1000 ppm TDS.
5. Stop the fresh-water pump (15).
6. Close all valves to keep the fresh water in the system during the
shutdown.
To flush the thrust bearing of the BMS hp pump, start the
pump for 30 seconds to allow the fresh water to enter into
the thrust bearing.
If the flushing takes more than 10 minutes, reduce the
flow rate to maximum 10 % of the rated flow rate.
During periods of inactivity, fill the pump with clean fresh
water.
20
English (GB)