Grundfos BMS hs Assembly instructions

BMS
BMS hs, BMS hp, BMST and BMSX
Installation and operating instructions
GRUNDFOS INSTRUCTIONS

English (GB)
2
English (GB) Installation and operating instructions
Original installation and operating instructions
These installation and operating instructions describe Grundfos
BMS.
Sections 1-5 give the information necessary to be able to unpack,
install and start up the product in a safe way.
Sections 6-12 give important information about the product, as
well as information on service, fault finding and disposal of the
product.
CONTENTS
Page
1. General information
1.1 Hazard statements
The symbols and hazard statements below may appear in
Grundfos installation and operating instructions, safety
instructions and service instructions.
The hazard statements are structured in the following way:
1.2 Notes
The symbols and notes below may appear in Grundfos
installation and operating instructions, safety instructions and
service instructions.
1. General information 2
1.1 Hazard statements 2
1.2 Notes 2
2. Receiving the product 3
2.1 Transporting the product 3
2.2 Inspecting the product 3
3. Installing the product 3
3.1 Reading guide 3
3.2 Foundation 3
3.3 Mechanical installation 3
3.4 Electrical installation 9
4. Commissioning the product 11
4.1 Checking the power supply 11
4.2 BMS hs pump 12
4.3 BMS hp pump 13
4.4 BMST system 14
4.5 BMSX system 14
4.6 Low-pressure flow control 16
5. Handling and storing the product 17
6. Product introduction 17
6.1 Nameplate 17
6.2 Pumped liquids 17
6.3 Filtration 17
6.4 Flushing and salinity 17
7. Servicing the product 18
7.1 Motor bearings 18
7.2 Preventive maintenance 18
8. Starting up the product after standstill 19
8.1 Frequency of starts and stops 19
9. Taking the product out of operation 19
9.1 BMS hs pump 19
9.2 BMS hp pump 20
9.3 BMST system 20
9.4 BMSX system 21
9.5 Flushing 21
10. Fault finding the product 22
10.1 BMS hs and BMST 22
10.2 BMS hp 23
10.3 Pressure exchanger of BMSX 24
11. Technical data 25
12. Disposing of the product 25
Read this document before installing the product.
Installation and operation must comply with local
regulations and accepted codes of good practice.
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.
SIGNAL WORD
Description of hazard
Consequence of ignoring the warning.
- Action to avoid the hazard.
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.

English (GB)
3
2. Receiving the product
2.1 Transporting the product
The pumps are supplied from the factory in proper packing in
which they must remain until installation.
2.2 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.
3. Installing the product
3.1 Reading guide
When installing the products, read the instructions in the table
below.
3.2 Foundation
Construct the foundation to safely support the booster system or
pump(s) 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.
3.2.1 Vibration damping
Use the vibration dampers supplied with the BMS hs pump.
3.3 Mechanical installation
3.3.1 BMS hs pump
The pump can be mounted directly on the floor or on a base
frame (accessory).
Fig. 1 BMS hs pump
Location
To ensure sufficient cooling of the motor, leave a free space of
minimum 100 mm behind the non-drive end of the motor.
Lifting and handling the motor
Use straps when lifting the motor, and lower it down slowly.
Fig. 2 Example of how to lift the motor
During delivery and storage, never preserve the
pumps with glycerine or similar liquids which are
aggressive to the pump materials.
System/
pump Step Action Section
BMS hs
1Mechanical
installation 3.3.1 BMS hs pump
2Electrical
installation 3.4.1 BMS hs pump
3 Commissioning 4.2 BMS hs pump
BMS hp
1Mechanical
installation 3.3.2 BMS hp pump
2Electrical
installation 3.4.2 BMS hp pump
3 Commissioning 4.3 BMS hp pump
BMST
1Mechanical
installation 3.3.3 BMST system
2Electrical
installation 3.4.3 BMST system
3 Commissioning 4.4 BMST system
BMSX
1Mechanical
installation 3.3.4 BMSX system
2Electrical
installation 3.4.4 BMSX system
3 Commissioning 4.5 BMSX system
TM05 9569 4113
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
nameplate.
TM05 9235 3613
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.

English (GB)
4
Motor installation
The motor must be leveled. 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.
Direction of rotation
Connect the power supply and check the direction of rotation.
See section 3.4 Electrical installation. The direction of rotation
must correspond to the direction under normal operation. See the
installation and operating instructions for the motor.
Lifting and handling the bare shaft pump
Hoist the bare shaft pump into place, and lower it down slowly.
Fig. 3 How to lift the pump
In order 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.
Assembling the motor and the pump
If necessary, you can change the position of the inlet pipe later.
See section Position of the inlet pipe.
Fig. 4 Position of drain holes
Alignment of the motor and the pump
Align the motor and pump before you tighten the screws. To
ensure correct installation, follow this procedure.
Use vibration dampers.
WARNING
Electric shock
Death or serious personal injury
- The electrical installation must be carried out by an
authorised person in accordance with local
regulations.
TM05 9236 3613
When assembling the pump and motor, make sure
the inlet pipe points upwards ( position 12 o'clock )
and the drain holes point downwards.
TM06 0964 1314
Inlet pipe
Drain holes
Step Description Picture
1
Fit all four screws
for motor and pump
connection.
Do not tighten the
screws yet.
TM05 9234 3613
2
Adjust the gap by
means of a feeler
gauge or similar
tool. Tighten one
screw by hand.
TM05 9232 3613
3
Adjust the gap 180 °
opposite the screw
you just tightened.
Do not tighten the
screw. Move the
pump to adjust the
gap.
TM05 9251 3613
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
section Position of
the inlet pipe.
TM05 9345 3613
5
When the gap has
been adjusted,
cross-tighten all
screws to 33 Nm.
TM05 9346 3613
6
Fasten the support
foot to the
foundation.
TM05 9345 3613
The support foot must not impose any tension on the
pump.

English (GB)
5
Position of the inlet pipe
To change the position of the pipe, follow this procedure.
Flushing the system
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.
Fig. 5 Pipe support
When fitting the Victaulic couplings, allow a gap of 3.5 mm
between the two pipes.
Fig. 6 Gap between pipes
Step Description Picture
1Loosen M10 and
M12 screws.
TM05 9347 3613
2
Mark up the pump
sleeve and union
nut.
TM05 9573 4013
3
Turn the inlet pipe
to the required
position, and make
sure the union nut
follows.
TM05 9343 3613
4 Check the marking.
TM05 9342 3613
5
Fit all screws
again. Tighten all
screws to 33 Nm.
TM05 9343 3613
6
Fasten the support
foot to the
foundation.
TM05 9345 3613
7Check the position
of the drain holes.
TM06 5336 4715
Drain holes
To avoid impurities in the pump, flush the pipes
before you connect the pump inlet and outlet pipes.
TM05 9230 3613
WARNING
Pressurised system
Death or serious personal injury
- Avoid stress in the pipe system.
TM05 9344 3613
3.5mm 3.5mm
3.5mm
Service connector

English (GB)
6
Service connector installation
In order to facilitate service of the pump and motor, install the
delivered service connector in the system.
1. Fit the two rubber parts.
2. Install the service connector.
Fig. 7 Position of rubber parts
3. Move the two rubber parts over the service connector.
Fig. 8 Position of service connector and rubber parts
4. Fit the Victaulic couplings and tighten the bolts to 33 Nm.
Fig. 9 Victaulic couplings
In case of a BMS hs pump, you are now ready for electrical
installation. See section 3.4.1 BMS hs pump.
In case of a BMST system, see section Lifting and handling the
BMT pump.
In case of a BMSX system, see section BMS hp pump
installation.
3.3.2 BMS hp pump
Fig. 10 BMS hp pump
Motor and pump installation
The pump and 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 x
M10) depending on the foundation.
Lifting and handling the pump
Hoist the pump into place.
Fig. 11 Example of how to lift the pump
TM05 9339 3613TM05 9340 3613TM05 9341 3613
TM06 1045 1414
We recommend that you use vibration dampers.
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
nameplate.
TM07 3141 4718

English (GB)
7
Position of the inlet pipe
To change the position of the pipe, follow this procedure.
Flushing the system
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.
Fig. 12 Pipe support
When fitting the Victaulic couplings, allow a gap of 3.5 mm
between the two pipes.
Fig. 13 Gap between pipes
3.3.3 BMST system
A BMST system consists of a BMS hs as primary pump and a
BMT as secondary pump. The BMT pump is driven by the high-
pressure concentrate from the membrane and used as feed pump
for the primary BMS hs pump.
Fig. 14 BMST system
Fig. 15 BMT pump
BMS hs pump installation
See section 3.3.1 BMS hs pump.
Lifting and handling the BMT pump
1. Hoist the pump into place, and lower it down slowly.
2. Install and secure the pump.
3. Support the pump close to the turbine, using the bracket
behind the turbine housing.
4. Use a clamp or similar device at the other end. See the
example in fig. 14.
BMT pump installation
The BMT pump must be level. If there is a gap between the
foundation or frame and the BMT pump, use a spirit level, a feeler
gauge and shims to level the pump. Then secure the pump by
means of suitable screws depending on the foundation or frame.
Flushing the system
Pipe connection
See section Pipe connection of the BMS hs pump.
Step Description Picture
1Loosen all eight
bolts in the flange.
TM06 0962 1314
2
Turn the inlet pipe
to the required
position. Tighten all
screws to 33 Nm.
TM06 0963 1314
3
Check the position
of the drain holes,
they must point
downwards
TM06 5336 4715
To avoid impurities, flush the pipes before you
connect the pump inlet and outlet pipes.
TM06 0959 1214
WARNING
Pressurised system
Death or serious personal injury
- Avoid stress in the pipe system.
TM06 0960 1214
Drain holes
3.5mm
3.5mm
TM05 9334 3613TM05 9350 3613
Use vibration dampers.
To avoid impurities, flush the pipes before you
connect the pump inlet and outlet pipes.

English (GB)
8
BMT and BMS hs pump installation
The inlet and outlet pipes are fitted with clamp liners for Victaulic
couplings.
To ensure correct installation, follow this procedure.
The concentrate from the turbine must flow freely to a drain under
all operating conditions. The height above the water level in the
drain must be at least 300 mm. The tube from the turbine to the
drain must have the same diameter in its entire length. The drain
must be larger than the tube and open so that the concentrate, a
mixture of air and water (foam), can escape freely.
Fig. 16 Drain from Pelton turbine
3.3.4 BMSX system
A BMSX system consists of a BMS hs pump as high-pressure
pump and a BMS hp pump as booster pump. The pressure
exchanger of BMSX is installed in order to recover energy from
the high-pressure concentrate.
Fig. 17 BMSX system
BMS hs pump installation
See section 3.3.1 BMS hs pump.
BMS hp pump installation
See section 3.3.2 BMS hp pump.
Step Description Picture
1
The turbine is
driven by the high-
pressure
concentrate from
the membrane.
Connect the high-
pressure outlet to
the turbine inlet of
the BMT pump.
TM05 9334 3613
2Connect the BMT
pump inlet.
TM05 9375 3613
3
Connect the BMT
pump and the BMS
hs pump.
TM05 9336 3613
4
Connect the hose
(∅300) to the outlet
of the turbine
housing with a
strap.
Lead the hose to a
drain tank, drain
channel or a similar
drain.
Fit the end of the
hose above the
highest possible
water level in the
drain. The hose
must be supported.
TM05 9337 3613
TM05 9474 5107
The concentrate outlet must be free under all
operating conditions. If an outlet pipe is connected to
the concentrate outlet, this pipe must have an air
outlet.
TM05 9569 4113 - TM07 2946 4518 TM05 9571 4113 - TM06 1045 1414
Min. 300 mm
Min. 30°

English (GB)
9
Lifting and handling the pressure exchanger of BMSX
Fig. 18 Pressure exchanger of BMSX
Use suitable straps when lifting the unit. Carefully hoist the
pressure exchanger into place, and lower it down. Secure the
unit(s) to a frame, and ensure a stress-free installation.
Flushing the system
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.
Both the inlet and the outlet pipes must be supported close to the
end of the pipes.
Fig. 19 Horizontal and vertical support of pipes
When fitting the Victaulic couplings, allow a gap of 3.5 mm
between the two pipes. See fig. 13.
3.4 Electrical installation
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.
3.4.1 BMS hs pump
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 pump, you are now ready for commissioning.
See section 4.2 BMS hs pump.
Gr-1015354
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
nameplate.
To avoid internal damage, do not lift the pressure
exchanger by the ports or put undue strain on the
port fittings.
Thoroughly flush associated pipes with water filtered
to 5 microns before installing the PX unit. Foreign
material may cause damage.
TM05 9348 3613
WARNING
Pressurised system
Death or serious personal injury
- Avoid stress in the pipe system.
The PX unit must not be supported by its pipe fittings
nor must the PX unit be allowed to support pipes or
manifolds.
DANGER
Electric shock
Death or serious personal injury
- Connect the pump to an external mains switch
placed close to the pump and to a motor-protective
circuit breaker or a frequency converter.
- It must be possible to lock the mains 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.

English (GB)
10
PM motor
For the PM motor, see the cable sizing table below. This table is
given for reference only, and it must under no circumstances be
used instead of the current local standards.
Pn:Nominal power.
In: Nominal current.
ILM:Maximum continuous line current permitted in motor mode
(power drawn by the motor).
(1) The value of the rated current and the motor cable cross-
sections are given for reference only. As a reminder, the motor
rated current permitted varies according to the switching
frequency and the temperature.
(2) For 110 kW and higher power, there are two wires on each
phase, so six wires are used in total.
(3) 170M: Bussmann fuses.
(4) The power cable cross-sections are given for reference only
for a current corresponding to the value of the Ico current at 3
kHz, a maximum length of 50 m, output frequency less than
100 Hz and an ambient temperature of 40 °C. We recommend
screened multi-core power cables. See fig. 20. The values
supplied are typical values.
Fig. 20 Screened multi-core cable
(5) The PE conductor cross-section must be not less than half of
the associated phase conductor cross-section assuming that
the same material is used.
AC motor
For BMS systems supplied with AC motor, see recommendations
from VFD manufacturer.
Software
The Grundfos BMS hs pump is supplied with the required
software configuration file, if the VFD is supplied by Grundfos.
You can find the number of the software configuration file on the
small sticker placed below the control panel in the control cabinet
for the frequency converter.
See also the configuration reference guide supplied with the
product.
3.4.2 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 BMS hp motor:
• minimum speed: 1700 rpm
• maximum speed: 3600 rpm
• setpoint input: 4-20 mA
• relay: alarm.
3.4.3 BMST system
For electrical installation, see section 3.4.1 BMS hs pump.
3.4.4 BMSX system
For electrical installation, see sections 3.4.1 BMS hs pump and
3.4.2 BMS hp pump.
Product
number Power drive model
Mains supply Motor(1)
Pn
[kW]
ILM
[A] Recommended
fuse(3)
Cable cross
section
[mm2](2)(5)
Pn
[kW]
In
[A]
Cable cross
section
[mm2](2)(4)(5)
380-440 V 440-480 V
96943883 FC-202P45K IP55 380-480 V 45 90 80 gG-100 3 x 50 + PE 44 84.5 3 x 50 + PE
96943884 FC-202P55K IP55 380-480 V 55 106 105 gG-160 3 x 50 + PE 52 97.5 3 x 50 + PE
96943885 FC-202P75K IP55 380-480 V 75 146 130 aR-200 3 x 150 + PE 70 127.0 3 x 150 + PE
96943886 FC-202P90K IP55 380-480 V 90 177 160 aR-250 3 x 150 + PE 85 156.0 3 x 150 + PE
99292227 FC202P110K IP54 380-480 V 110 204 183 170M2620 6 x 95 + PE 100 183.0 6 x 95 + PE
99292229 FC202P160K IP54 380-480 V 160 304 291 170M4015 6 x 95 + PE 140 264.0 6 x 95 + PE
99292229 FC202P160K IP54 380-480 V 160 304 291 170M4015 6 x 95 + PE 160 316.0 6 x 95 + PE
99292230 FC202P200K IP54 380-480 V 200 381 348 170M4016 6 x 185+ PE 180 363.0 6 x 185 + PE
TM06 5337 4715
Do not change any settings without guidance from
Grundfos Service.
If not controlled by a 4-20 mA signal, the external
setpoint input must be disabled by the remote
control.

English (GB)
11
4. Commissioning the product
These commissioning guidelines concern both fresh-water
installations and systems for desalination.
– BMS hs pump.
– BMS hp pump.
– BMST system. See section 4.4 BMST system.
– BMSX system. See section 4.5 BMSX system.
Commissioning of BMSX booster systems must be performed by
Grundfos technicians or by audited partners acting as the service
suppliers for Grundfos.
Furthermore, we recommend that commissioning of BMS hs,
BMS hp and BMST 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.
4.1 Checking the power supply
In case a further motor check is required, proceed as follows:
• BMS hs 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.
Warning
The sound pressure level is so high that hearing
protection must be used.
WARNING
Pressurised system
Death or serious personal injury
- Be aware of pressurised pipe systems even after
shut down.
1. Supply
voltage
TM00 1371 3597
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 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
TM00 1372 3597
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 "Technical
specifications".
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.
• Too high or too low supply voltage.
• Poor connection in leads. Weak cables.

English (GB)
12
4.2 BMS hs pump
4.2.1 Before startup
Follow these instructions to ensure correct startup of the BMS hs
pump.
Check that the power supply is according to the nameplate.
Fig. 21 Example of BMS hs pump
* A fresh-water flush pump must be installed in systems for
seawater desalination or similar systems.
4.2.2 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.
To start up a BMS hs pump, proceed as follows:
1. Start the feed pump (1), and check that the inlet pressure (2)
of the BMS hs pump (6) is higher than 1.0 bar and lower than
35.0 bar.
2. Vent the BMS hs pump (6).
3. Start the BMS hs pump (6). Ramp up the BMS hs pump (6)
according to factory settings. See fig. 22 (1 and 2).
Fig. 22 Ramping up
Default ramp-up time:
• 0 to 1700 rpm in maximum three seconds (1). This setting
must not be changed.
• Ramp up from 1700 rpm is set to 1500 rpm/min (1000 rpm/40
seconds) (2). It can be changed according to application
requirement.
4. Set the outlet pressure of the pump (8) to the desired value.
See fig. 21.
5. Check that the inlet pressure (2) of the pump is higher than
1.0 bar and lower than 35.0 bar.
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.
TM06 1077 1514
Pos. Description
1 Raw-water feed pump
2 Pressure gauge (raw water)
3Filter
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*
1
2
3
4
5
6
78
9
11
12
10
Built-in non-return valve
Do not operate pumps against a closed valve.
Ramp up from 0 to 1700 rpm within three seconds.
TM05 8860 2813
Make sure that the BMS hs pump is dry-run
protected.
Do not touch electrical connections if the pump has
reverse flow.
2
3
1
4
rpm
3 seconds t [seconds]
1700

English (GB)
13
4.3 BMS hp pump
4.3.1 Before startup
Follow these instructions to ensure correct startup of the BMS hp
pump.
Check that the power supply is according to the nameplate.
Fig. 23 Example of BMS hp pump
* A fresh-water flush pump must be installed in systems for
seawater desalination or similar systems.
The motor sizes and maximum inlet pressure during startup can
be found below.
4.3.2 Startup
If an outlet valve is installed, we recommend that you open the
valve 1/4 of a turn when starting the pump/system.
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 BMS hp pump.
3. Start the BMS hp pump.
4. Ramp up the BMS hp pump according to factory settings. See
fig. 24 (1).
Fig. 24 Ramping up, BMS hp
Default ramp-up time:
• 0 to 1700 rpm in maximum three seconds. This setting must
not be changed.
• Ramp up from 1700 rpm to maximum speed of the system. It
can be changed according to application requirement.
5. Set the outlet pressure of the BMS hp pump to the desired
value. See fig. 23.
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.
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.
TM06 1078 1514
Pos. Description
1 Raw-water feed pump
2 Pressure gauge (raw water)
3Filter
4 Low-pressure switch
5 Flowmeter
6BMShppump
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*
BMS hp pumps with the motor sizes mentioned
below must have lower inlet pressure during startup.
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
1
2
3
4
5
6
78
9
11
12
10
Do not operate pumps against a closed valve.
Ramp up from 0 to 1700 rpm within three seconds.
TM06 1079 1614
Make sure that the BMS hp pump is dry-run
protected.
2
3
1
4
rpm
3 seconds t [seconds]
1700

English (GB)
14
4.4 BMST system
4.4.1 Before startup
Follow these instructions to ensure correct startup of the BMST
system.
1. Check that the power supply is according to the nameplate.
2. Check that the installation corresponds to the diagram.
Fig. 25 Example of BMST booster system
4.4.2 Startup
To start up a BMST system, proceed as follows:
1. Start the raw-water feed pump (1), and check that the inlet
pressure (2) of the pump is higher than 2.0 bar (20 metres
head) and lower than 5.0 bar (50 metres head).
2. Vent the BMT pump (6).
The pump is fully vented when liquid runs out of the vent (9).
3. Start the BMS hs pump (6.1). See section 4.2.2 Startup.
4. Set the outlet pressure (7) of the pump to the desired value.
5. Check that the inlet pressure (2) of the pump is higher than
2.0 bar (20 metres head) and lower than 5.0 bar (50 metres
head).
6. The system is now ready for operation.
4.5 BMSX system
4.5.1 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.
4.5.2 Before startup
Follow these instructions to ensure correct startup of the BMSX
system.
1. See section 4.2 BMS hs pump and 4.3 BMS hp pump.
2. Check that the installation corresponds to the diagram.
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.
TM05 8861 2813
Pos. Description
1 Raw-water feed pump
2 Pressure gauge (raw water)
3Filter
4 Low-pressure switch
5 Flowmeter
6 BMT pump
6.1 BMS hs pump
7 Pressure gauge (BMST outlet pressure)
8 Flowmeter
9Vent
10 High-pressure switch
11 Pressure-relief valve
12 Membrane filter
13 Permeate
14 Pressure gauge (high-pressure concentrate)
15 Pressure gauge (fresh-water pump)
16 Fresh-water flush pump
1
2
3
5
6
6.1
7
14
13
12
15
16
8
109
11
4
Make sure that the BMS hs pump is dry-run
protected.
Ramp up from 0 to 1700 rpm within three seconds.
WARNING
Description of hazard
Death or serious personal injury
- Make sure that the pump and the system are fully
vented before startup.
A pressure gauge should be installed near each pipe
connection of the PX unit or PX unit array to facilitate
monitoring of PX unit performance.

English (GB)
15
Fig. 26 Example of BMSX booster system
4.5.3 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 (17) through the
pressure exchanger (23) may or may not cause the rotor to
begin to rotate. 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.
Fig. 27 Starting the seawater feed pump
4. Adjust the concentrate valve (24) 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.
7. Starting the BMS hp pump (14). See section 4.3.2 Startup.
TM05 9617 4213
Pos. Description
1 Raw-water feed pump
2 Filter
3 Low-pressure switch
4Flowmeter
5 Pressure gauge (raw water)
6 BMS hs pump with built-in non-return valve
7 Non-return valve
8 Pressure gauge (BMS hs outlet pressure)
9Vent
10 High-pressure switch
11 Pressure-relief valve
12 Pressure gauge (BMS hp inlet pressure)
13 Pressure gauge (BMS hp outlet pressure)
14 BMS hp pump
15 Flowmeter (high-pressure raw water)
16 Pressure gauge (low-pressure raw water)
17 Flowmeter (low-pressure raw water)
18 Membrane filter
19 Permeate
20 Cleaning flush valve
21 Pressure gauge (high-pressure concentrate)
22 Pressure gauge (low-pressure concentrate)
23 Pressure exchanger of BMSX
24 Concentrate valve
25 Pressure gauge (fresh-water pump)
26 Fresh-water flush pump
27 Flowmeter
1
2
4
16
15
14
12
8
7
910 11
18
19
13
21
22
24
23
17
5
6
25
26
27
320
Built-in non-return valve
Never operate the main high-pressure pump without
the BMS hp pump. An interlock should be installed,
so the high-pressure pump will automatically shut
down if the booster pump shuts down.
TM05 9619 4213
The maximum flow rate of the pressure exchanger
must never be exceeded. See the nameplate of the
pressure exchanger.
WARNING
Pressurised 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.
1
2
4
16
15
14
12
8
910
18
19
20
13
21
22
24
23
17
5
6
25
26
27
11
7
3
Built-in non-return valve

English (GB)
16
Fig. 28 System pressure and flow, BMS hp
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 (14) on the
outlet side of the pressure exchanger (23) until the low-pressure
seawater inlet flow (17) equals the calculated seawater flow (15).
Fig. 29 Balanced flows
To achieve a balanced flow through the pressure exchanger (23),
use the flowmeters installed on the low-pressure seawater inlet
pipe (17) and the high-pressure seawater pipe (15). All flows in
and out of the pressure exchanger (23) must be balanced to
within 5 % for optimum operation.
A lower flow in the seawater inlet than the seawater outlet will
result in lower-quality permeate, increased feed pressure and
higher energy consumption. We recommend that you use a
slightly oversized BMS hp pump (14) to handle projected
membrane concentrate flows, taking seasonal variations,
membrane fouling and manifold losses into account. The flow and
pressure of the BMS hp pump (14) must be controlled with a
frequency converter.
To start up a BMS hs pump (6), proceed as follows:
See section 4.2.2 Startup.
Fig. 30 System in operation
The BMSX system pressure will increase. The sound pressure
level from the pressure exchanger (23) will increase. Small
variations in sound pressure level and rotor speed are normal.
4.6 Low-pressure flow control
The concentrate valve (24) on the outlet side of the system must
be adjusted to control the flow rate of the low-pressure seawater
inlet (17) and low-pressure concentrate outlet (22) (minimum 1
bar backpressure). This valve (24) also adds backpressure on the
pressure exchanger (23) required to prevent destructive
cavitation. The low-pressure seawater inlet flow (17) equals the
high-pressure concentrate inlet flow (15).
TM05 9620 4213TM05 9620 4213
1
2
4
16
15
14
12
8
910
18
19
20
13
21
22
24
23
17
5
6
25
26
27
11
7
3
Built-in non-return valve
1
2
4
16
15
14
12
8
910
18
19
20
13
21
22
24
23
17
5
6
25
26
27
11
7
3
Built-in non-return valve
Operating the pressure exchanger with unbalanced
flows may result in contamination of the seawater
feed by the concentrate and consequently lower
efficiency.
Neither the low-pressure nor the high-pressure flow
through the pressure exchanger must ever exceed
the rated maximum flow. The only reliable way to
determine the flows is to use a low-pressure
flowmeter (16) or a high-pressure flowmeter (14),
respectively.
TM05 9618 4213
1
2
4
16
15
14
12
9
810
18
19
20
13
21
22
24
23
175
6
25
26
27
11
7
3
Built-in non-return valve

English (GB)
17
5. Handling and storing the product
If the pumps have to be stored, the location must be frost-free.
6. Product introduction
Grundfos BMS, BMST and BMSX booster systems are designed
for high pressure boosting, filtraton and desalination of seawater
or brackish water in the so-called SWRO systems (SWRO = Sea
Water Reverse Osmosis). The design of the systems ensures
high energy recovery.
6.1 Nameplate
Fig. 1 Nameplate
6.2 Pumped liquids
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, e.g. 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.
6.3 Filtration
BMS hs, BMS hp, BMST: Filter the raw water to maximum 30
microns.
BMSX: Filter the raw water to maximum 10 microns.
Fig. 2 Filtration
6.4 Flushing and salinity
When the booster system is stopped, it is very important to flush
the system according to these guidelines.
See also periods of inactivity in section 8. Starting up the product
after standstill.
* TDS: Total dissolved solids
TM05 9242 3613
Pos. Description
1 Type designation
2
Model designation:
• generation
• product number
• production code (dd-mm-yy).
3 Rated flow rate
4 Rated head
5 Rated speed
6 Minimum and maximum inlet pressure
7 Maximum outlet pressure
8 Minimum and maximum liquid temperature
9 Net weight of booster module
10 Minimum efficiency index
11 Country of origin
12 CE mark
13 WEEE marking
Do not use the pumps for pumping flammable or
combustible liquids such as diesel oil, petrol or
similar liquids.
N/A
1
2
3
4
5
6
7
8
9
10
11 12 13
TM05 8862 2813
Pos. Description
1 Raw-water feed pump
2 Pressure gauge (raw water)
3 Low-pressure switch
4Flowmeter
5 Pressure gauge (fresh-water pump)
6 Fresh-water flush pump
Pump type Filter
[micron absolute]
BMS hs
30BMS hp
BMST
Pressure exchanger of BMSX 10
Flush the pumps to prevent stagnant seawater which
can start corrosion inside the pump.
Pump type
Fresh water
pmin
[bar]
Max. salinity
[ppm TDS*]
Flushing time
[min.]
BMS hs
2 1000
Depends on
pressure, flow,
water quality and
system design
and size.
BMS hp
BMST
Pressure
exchanger
of BMSX
1
2
3
4
5
6
Filter

English (GB)
18
7. Servicing the product
Check the following at suitable intervals, preferably daily:
• flow rate and pressure
• whether the noise level has changed.
We recommend that you write the operating data in a log book as
they may be useful in connection with maintenance.
7.1 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..
7.1.1 Type of grease
See motor nameplate.
7.2 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.
To see any variation in the pump performance and be able to
react to this, we recommend that you keep a log book of the daily
operation.
* 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/or
Grundfos Product Center.
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.
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.
Avoid mixing greases.
Check for leaks,
noise or abnormal
vibrations
Check thrust
bearing and shaft
seal
Lubricate motor
bearings
Replace motor
bearings
Clean filter mats on
control panel
BMS hs (with PM motor)
Weekly
No preventive
maintenance
required
According to motor nameplate MonthlyBMS hs (with AC motor)
BMS hp
Pressure exchanger of
BMSX No preventive maintenance required*

English (GB)
19
8. Starting up the product after standstill
Follow the normal startup procedure step by step. For greasing of
motor bearings, see section 7.1 Motor bearings.
8.1 Frequency of starts and stops
We recommend the following frequency:
minimum 1 per year
maximum 5 per hour
maximum 20 per day.
9. 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:
* Use the same solution that is used to preserve the
membranes.
Carefully follow these instructions to safely shut down your
booster system.
9.1 BMS hs pump
This procedure describes how to shut down the BMS hs pump.
Fig. 3 Example of BMS hs pump
Procedure
1. Ramp down the BMS hs pump (6) according to the factory
settings. See fig. 4(3 and 4).
Fig. 4 Ramp down
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 (12).
6. Close all valves to keep the fresh water in the system during
the shutdown.
* Only flush desalination systems that pump seawater or similar
aggressive liquids.
Action
Period of inactivity
More than
6 hours
More than
1 month
Flush the pump. See section
6.4 Flushing and salinity.xx
Fill the pump with fresh water. x x
Preserve the pump.* x
Flush the pumps to prevent stagnant seawater which
can start corrosion inside the pump.
TM06 1077 1514
1
2
3
4
5
6
78
9
11
12
10
1000 ppm TDS
Built-in non-return valve
TM05 8860 2813
Ramp down from 1700 to 0 rpm in three seconds.
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 to maximum 10 % of the rated flow rate.
During periods of inactivity, fill the pump with clean
fresh water.
2
3
1
4
rpm
3 seconds t [seconds]
1700

English (GB)
20
9.2 BMS hp pump
This procedure describes how to shut down the BMS hp pump.
Fig. 5 Example of BMS hp system
Procedure
1. Ramp down the BMS hp pump (6) according to the factory
settings. See fig. 6(3 and 4).
Fig. 6 Ramp down
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.
9.3 BMST system
This procedure describes how to shut down the BMST system.
Fig. 7 Example of BMST system
Procedure
1. Ramp down the BMS hs pump (6.1) according to the factory
settings.
2. Stop the seawater feed pump (1).
3. Start the fresh-water flush pump (16), and flush the system
with fresh water (15) (minimum 2 bar for flushing).
4. Flush the system for 5 to 10 minutes or until the salinity is
lower than 1000 ppm TDS.
5. Stop the fresh-water pump (16).
6. Close all valves to keep the fresh water in the system during
shutdown.
TM06 1078 1514TM06 1079 1614
Ramp down from 1700 to 0 rpm in three seconds.
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 to maximum 10 % of the rated flow rate.
During periods of inactivity, fill the pump with clean
fresh water.
1
2
3
4
5
6
78
9
11
12
10
2
3
1
4
rpm
3 seconds t [seconds]
1700
TM05 8861 2813
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 to maximum 10 % of the rated flow rate.
During periods of inactivity, fill the pump with clean
fresh water.
1
2
3
5
6
6.1
7
14
13
12
15
16
8
109
11
4