Grundfos JP User manual

JP and JP Booster
Installation and operating instructions
NPB 118-116-191083
TANDA PENDAFTARAN KEMENDAG
NOMOR: I.34.GTI75.03202.1119
GRUNDFOS INSTRUCTIONS

JP and JP Booster
English (GB)
Installation and operating instructions ..................................4
Bahasa Indonesia (ID)
Petunjuk pengoperasian dan pemasangan..............................24
Appendix A...................................................44
3
Table of contents

English (GB) Installation and operating instructions
Original installation and operating instructions
Table of contents
1. General information ............. 4
1.1 Target group.................. 4
1.2 Hazard statements .............. 4
1.3 Notes ..................... 5
2. Receiving the product............ 5
2.1 Inspecting the product ............ 5
2.2 Scope of delivery, JP ............. 5
2.3 Scope of delivery, JP Booster ........ 5
3. Installing the product ............ 5
3.1 Location .................... 5
3.2 Mechanical installation ............ 6
3.3 Electrical connection ............. 9
3.4 Adjusting the pressure switch ........12
4. Startup of the product............12
4.1 Priming the product ..............13
4.2 Starting up the product ............13
5. Product introduction ............14
5.1 Product overview, JP .............14
5.2 Product overview, JP Booster ........15
5.3 Intended use .................15
5.4 Pumped liquids ................15
5.5 Identification..................16
6. Service ....................16
6.1 Maintenance .................17
6.2 Maintaining the pressure tank ........17
6.3 Service kits ..................17
7. Taking the product out of operation ....17
7.1 Draining JP and JP PT-V ...........17
7.2 Draining JP PT-H ...............18
7.3 Storage of the product ............18
7.4 Frost protection ................19
8. Fault finding the product ..........19
8.1 The pump does not start ...........19
8.2 The pump stops unexpectedly during
operation and starts again after a while . ..19
8.3 The pump runs, but does not deliver the
expected amount of water ..........19
8.4 Fault finding boosters with a pressure
manager....................20
8.5 Fault finding boosters with a pressure
tank ......................21
8.6 Fault finding the pressure switch .......21
9. Technical data ................22
9.1 Operating conditions .............22
9.2 Head and flow rate ..............22
9.3 Inlet pressure .................23
9.4 Miscellaneous data ..............23
10. Disposing of the product ..........23
1. General information
This appliance can be used by children
aged from 8 years and above and persons
with reduced physical, sensory or mental
capabilities or lack of experience and
knowledge if they have been given
supervision or instruction concerning use
of the appliance in a safe way and
understand the hazards involved.
Children shall not play with the appliance.
Cleaning and user maintenance shall not
be made by children without supervision.
Read this document before you install the
product. Installation and operation must
comply with local regulations and accepted
codes of good practice.
1.1 Target group
These installation and operating instructions are
intended for professional as well as non-professional
users.
1.2 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:
4
English (GB)

SIGNAL WORD
Description of the hazard
Consequence of ignoring the warning
• Action to avoid the hazard.
1.3 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.
2. Receiving the product
2.1 Inspecting the product
On receipt of the product, do the following:
1. Check that the product is as ordered.
If the product is not as ordered, contact the
supplier.
2. Make sure that the supply voltage and frequency
correspond to the values stated on the product
nameplate.
Related information
5.5.1 Nameplate example for JP and JP Booster
2.2 Scope of delivery, JP
The box contains the following items:
• 1 Grundfos JP pump
• 1 lifting-handle kit
• 1 quick guide
• 1 safety instructions booklet.
2.3 Scope of delivery, JP Booster
The box contains the following items:
• 1 Grundfos JP Booster
• 1 quick guide
• 1 safety instructions booklet.
3. Installing the product
3.1 Location
The product can be installed both indoors and
outdoors.
Please observe the following:
• Install the product to enable easy inspection,
maintenance, and service.
• We recommend that you place the product as
close as possible to the liquid to be pumped.
• We recommend that you install the product near
a drain or in a drip tray connected to a drain in
order to lead away possible condensation from
cold surfaces.
Related information
3.1.2 Ambient temperature during operation
3.1.1 Installation of the product in a frosty
environment
Protect the product from freezing if it is to be installed
outdoors where frost may occur.
3.1.2 Ambient temperature during operation
The ambient temperature must not exceed 55 °C.
Ambient temperature
Up to 40
°C The pump can run continuous operation.
40 to 55
°C
The overheating protection ensures that
the pump runs intermittent operation
when the air temperature is too high to
cool the motor efficiently.
Example of intermittent cycle: the pump
runs for 20 min and stops for 40 min
before starting again. See the table
below.
5
English (GB)

Intermittent operation (S3 mode)
40-55 °C 50 Hz 60 Hz
JP 3-42 ON: 20 min
OFF: 40 min
ON: 20 min
OFF: 40 min
JP 4-47 ON: 15 min
OFF: 45 min
ON: 10 min
OFF: 50 min
JP 4-54 ON: 20 min
OFF: 40 min
ON: 20 min
OFF: 40 min
JP 5-48 ON: 20 min
OFF: 40 min
ON: 30 min
OFF: 30 min
Related information
3.1 Location
3.1.3 Minimum space
Ensure sufficient space for service and maintenance
and for motor cooling.
• We recommend a clearance of 0.5 m on three
sides of the product.
• The motor is fan cooled, so do not block the fan
cover.
• If you install the product with one side against a
wall, make sure that the nameplate is visible.
3.2 Mechanical installation
WARNING
Electric shock
Death or serious personal injury
‐Switch off the power supply before you
start any work on the product. Make
sure that the power supply cannot be
switched on accidentally.
CAUTION
Crushing of feet
Minor or moderate personal injury
‐Wear safety shoes when handling the
product.
CAUTION
Impurities in the water
Minor or moderate personal injury
‐Before the pump is used for supplying
drinking water, flush the pump
thoroughly with clean water.
3.2.1 Mounting the product
• Place the product in a horizontal position with a
maximum inclination angle of ± 5 °. The base
plate must be facing downwards.
• Fasten the product to a solid horizontal
foundation by means of screws through the holes
in the base plate.
F G
TM072334
Foundation of a JP pump
FG
TM072477
Foundation of JP PT-H Booster
JP pump
[mm]
JP PT-H
Booster
[mm]
JP PT-H
Booster (60L)
[mm]
F 47 265 340
G 110 230 300
3.2.2 Attaching the lifting handle
The handle is supplied with the JP pump. It is optional
to attach the handle on the pump, for example on
permanently installed pumps.
2°
1°
1x
2x
1
1°
TM072418
6
English (GB)

2
4°
1 2
3
TM072419
4
TM072480
How to attach the lifting handle on the pump
3.2.3 Connecting the pipe system
Install the product so that it is not stressed
by the pipe system.
Pipe dimensions:
• The diameter of the inlet pipe must be
larger than 1", if the inlet pipe is longer
than 10 m, or if the suction lift
exceeds 4 m.
• If a hose is used as inlet pipe, it must
be non-collapsible.
We recommend that you install isolating
valves on both the inlet and outlet side of
the pump.
1. Seal the pipe fittings with thread sealing tape or
similar.
2. Connect pipes to the inlet and outlet port on the
pump. Do not let the pump support the pipes.
Use a pipe wrench or similar tool.
3. Fit a foot valve to the inlet pipe if the pump is
installed above the liquid level, for example if you
pump from a well, tank or reservoir. We
recommend a foot valve with strainer.
4. We recommend that you install a filter on the inlet
side to protect the pump from sand, gravel or
other debris if the pump is to be used for
pumping rainwater or well water.
5. Make sure that the inlet pipe has a gradual
upward slope of 5 ° towards the pump to avoid
air pockets, especially under suction-lift
conditions.
TM064532
Inlet pipe with gradual upward slope towards the
pump
3.2.3.1 Maximum system pressure
Make sure that the system in which the
pump is installed is designed for the
maximum pump pressure.
The maximum inlet pressure depends on the head at
the actual duty point. The sum of the inlet pressure
and the head must not exceed the maximum system
pressure.
We recommend installing a pressure-relief valve to
protect the pump so that the outlet pressure does not
exceed the maximum system pressure.
3.2.3.2 Inlet and outlet pipes
Please follow these general precautions when
connecting the inlet and outlet pipes.
Do not let the pump support the pipes. Use
pipe hangers or other supports at proper
intervals to provide pipe support near the
pump.
The internal diameter of the pipes must
never be smaller than the diameter of the
pump ports.
• Install the pipes so that air pockets are avoided,
especially on the inlet side of the pump.
• Use eccentric reducers with the tapered side
down.
7
English (GB)

• Make sure the pipes are as straight as possible
to avoid unnecessary bends and fittings. We
recommend long-radius 90 ° pipe bends to
decrease friction loss.
• Run the inlet pipe as direct as possible and,
ideally, make sure the length is at least ten times
the pipe diameter.
• If possible, run a horizontal inlet line. We
recommend a gradual upward slope for pumps
operating in suction-lift conditions, and a gradual
downward slope for pumps operating in positive
inlet-pressure conditions.
• A short pipe must be of the same diameter as the
inlet port or larger.
• A long pipe must be one or two sizes larger than
the inlet port, depending on the length.
TM040338
Recommended pipe installation to avoid friction and
air pockets
TM058227
Correct pipe sizing for connection to the pump inlet
or outlet
8
English (GB)

3.2.4 Installation examples
We recommend that you follow the installation
examples.
Valves are not supplied with the pump.
3.2.4.1 Suction from a tank
This installation example shows JP PM, but it applies
to all variants of the JP range.
1
2
4
3
3
6
5
7
TM072435
Pos. Description
1 Highest tapping point.
2 Isolating valve.
3 Pipe support.
4 Pressure manager.
5 Drain to sewer.
6
Strainer. A foot valve is optional. We
recommend using a foot valve together with
JP PM.
7 5 ° angle.
3.2.4.2 Suction from a well
This installation example shows the JP PM, but it
applies to all variants of the JP range.
6
1
7
2
4
3
3
5
TM072434
Pos. Description
1 Highest tapping point.
2 Isolating valve.
3 Pipe support.
4 Pressure manager.
5 5 ° angle.
6
Foot valve with strainer. The foot valve is
optional. We recommend using a foot valve
together with JP PM.
7 Pump cover.
3.3 Electrical connection
WARNING
Electric shock
Death or serious personal injury
‐Switch off the power supply before you
start any work on the product. Make
sure that the power supply cannot be
switched on accidentally.
WARNING
Electric shock
Death or serious personal injury
‐The product is supplied with a
grounding conductor and grounding-
type attachment plug. To reduce the
risk of electric shock, be certain that
the product is connected only to a
properly grounded, grounding-type
receptacle (protective earth).
9
English (GB)

WARNING
Electric shock
Death or serious personal injury
‐If national legislation requires a
residual-current device (RCD) or
equivalent in the electrical installation,
this must be type A or better.
WARNING
Electric shock
Death or serious personal injury
‐If the product is used for cleaning or
maintenance of swimming pools,
garden ponds or similar places, make
sure that the product is supplied
through a residual-current device
(RCD) with a rated residual operating
current not exceeding 30 mA.
All electrical connections must be carried
out by qualified persons in accordance
with local regulations.
Make sure that the electrical installation
supports the rated current [A] of the
product. See the product's nameplate.
3.3.1 Connecting products with a plug
WARNING
Electric shock
Death or serious personal injury
‐Make sure that the power plug
delivered with the product is in
compliance with local regulations.
‐The plug must have the same
protective earth (PE) connection
system as the power outlet. If not, use
a suitable adapter if allowed by local
regulations.
Do not turn on the power supply until the
pump has been filled with liquid.
1. Switch off the power supply to the power socket.
2. Connect the plug to the power socket.
3.3.2 Connecting products without a plug
WARNING
Electric shock
Death or serious personal injury
‐Power cables without a plug must be
connected to a supply disconnecting
device incorporated in the fixed wiring
according to the local wiring rules.
‐The protective earth (PE) of the power
outlet must be connected to the
protective earth of the pump. The plug
must have the same PE connection
system as the power outlet.
Do not turn on the power supply until the
pump has been filled with liquid.
If the product is delivered with a cable but without a
plug, connect the cable to the external main switch or
attach a plug.
Connecting the cable to an external main switch
1. Strip the cable.
2. Thread each individual wire to the correct
terminal in the external main switch.
Wiring a plug
1. Strip the cable.
2. Loosen the two screws holding the cable clamp
and pull the cable through.
3. Thread each individual wire to the correct
terminal.
4. Tighten the terminal screws and the cable clamp
screw. Make sure not to overtighten the cable
clamp screw.
1
23
4
TM072505
Example, plug wiring
Pos. Description
1 PE: Earth, yellow and green wire
2 N: Neutral, blue wire
3 L: Live, brown wire
4 Cable clamp
10
English (GB)

Related information
3.3.3 Connecting products without a cable
3.3.3 Connecting products without a cable
WARNING
Electric shock
Death or serious personal injury
‐Power supply cables without a plug
must be connected to a supply
disconnecting device incorporated in
the fixed wiring according to the local
wiring rules.
Do not turn on the power supply until the
pump has been filled with liquid.
If the product is delivered without a cable, please
connect the pump to the power supply using one of
the following cable types:
Pump model Recommended cable type
JP 3-42 and JP 4-47 H05 RN-F
JP 4-54 and JP 5-48 H07 RN-F
Do as follows to connect the cable to the pump:
1. Remove the top cover on the motor by loosening
the screws.
2. Locate the power-supply terminal and cable
clamp inside the terminal box.
3. Loosen the cable clamp.
4. Pull one end of the cable through the cable gland
located on the side of the terminal box.
5. Strip the cable conductors and add cable shoes.
TM072423
11
English (GB)

6. Connect the cable conductors to the power-
supply terminal. See wiring diagram.
7. Tighten the terminal screws and the cable clamp
screw. Make sure not to overtighten the cable
clamp screw.
8. Refit the top cover and tighten the screws.
9. Strip the other end of the cable and connect it to
a plug or an external main switch.
TM072433
Related information
3.3.2 Connecting products without a plug
3.3.4 Wiring diagram
3.3.4 Wiring diagram
N L
1
2
3
4
TM072335
Pos. Description
1 Red
2 Blue
3 Black
4 Capacitor
Related information
3.3.3 Connecting products without a cable
3.3.5 Motor protection
The pump incorporates current- and temperature-
dependent motor protection. If the pump is running
without water, is blocked or otherwise overloaded, the
built-in thermal switch will cut out. When the motor
has cooled sufficiently, it will restart automatically.
No external motor protection is required.
3.4 Adjusting the pressure switch
The automatic pressurization groups are
provided with a factory setting that is
sufficient for most plants and
requirements. However, the setting of the
pressure switch may be adjusted to adapt
the group to meet different requirements.
1. Establish the minimum desired pressure value
(leaving the pump).
2. Set the storage tank pre-loading pressure 0.2 bar
less than the minimum pressure level. This
operation must be carried out only after having
drained all of the water out of the tank.
3. After having identified the model of pressure
switch supplied with the pump, calibrate it
following the indications below and check the
established values with a pressure gauge.
4. Loosen the larger nut completely.
5. Adjust the larger nut until you reach the desired
start pressure:
a. Clockwise: increase the start pressure.
b. Counterclockwise: decrease the start
pressure.
6. Adjust the smaller nut until you reach the desired
stop pressure:
a. Clockwise: increase the stop pressure.
b. Counterclockwise: decrease the stop
pressure.
4. Startup of the product
WARNING
Electric shock
Death or serious personal injury
‐Do not use the product for cleaning
and other maintenance of swimming
pools or similar places if there are
people in the water.
CAUTION
Hot surface
Minor or moderate personal injury
‐Use protective gloves if the liquid or
ambient temperature is higher than 40
°C.
CAUTION
Hot surface
Minor or moderate personal injury
‐Do not run the pump continuously with
a closed inlet or outlet valve.
12
English (GB)

CAUTION
Hot or cold liquid
Minor or moderate personal injury
‐Make sure that escaping hot or cold
liquid does not cause injury to persons
or damage to the equipment.
Do not turn on the power supply until the
pump has been filled with liquid.
The number of starts and stops must not
exceed 20 times per hour.
The pump must not run without delivering
water for more than 5 minutes.
Only use the product for the intended use
and for the pumped liquids stated in these
installation and operating instructions.
Related information
5.3 Intended use
5.4 Pumped liquids
4.1 Priming the product
Always tighten the priming plug by hand.
1. Unscrew the priming plug.
2. Fill the pump with water.
3. Refit the priming plug and tighten by hand.
TM072401
4.2 Starting up the product
After installing the product, do the following:
1. Open all isolating valves. Make sure that the
water supply is sufficient on the inlet side of the
pump.
2. Turn on the power supply to the pump, and the
pump will start. If there is a suction lift, it can take
up to five minutes before the pump delivers
water. This period depends on the length and
diameter of the inlet pipe.
3. Open the tapping point that is highest or furthest
away from the pump to let out air trapped in the
system.
4. When water flows through the tapping point,
close it.
5. Startup is completed, and the pump is ready for
operation.
13
English (GB)

4.2.1 Startup of JP PM
For JP pumps with pressure manager, please see the
PM 1/PM 2 quick guide for instructions on how to
start up the product.
QR96804589
http://net.grundfos.com/qr/i/98388184
If a pressure is not built up in the system
within five minutes after startup, the dry-
running protection will be activated and the
pump will be stopped. Check the priming
conditions of the pump before attempting
to restart it.
4.2.2 Shaft seal run-in
The shaft seal faces are lubricated by the pumped
liquid. A slight leakage from the shaft seal of up to 10
ml per day or 8 to 10 drops per hour may occur.
Under normal conditions, the leaking liquid will
evaporate. As a result, no leakage will be detected.
When the pump is started for the first time, or when
the shaft seal has been replaced, a certain run-in
period is required before the leakage is reduced to an
acceptable level. The time required for this depends
on the operating conditions, that is, every time the
operating conditions change, a new run-in period will
be started.
Leaking liquid will drain through the drain holes in the
motor flange.
Install the product in such a way that leakage cannot
cause undesirable collateral damage.
5. Product introduction
Grundfos jet pumps and boosters are designed for
domestic use and ensure a constant supply of clean
water to households, gardens and light commercial
applications.
JP
JP is a self-priming, single-stage centrifugal jet pump.
The jet pump has an excellent suction capacity and is
designed for long and trouble-free operation. The
built-in ejector with guide vanes ensures optimum
self-priming properties. JP is small and compact, and
the lifting handle makes JP handy and easy to carry.
The pump housing is made of stainless steel.
JP Boosters
JP Boosters are compact systems for pressure
boosting with pressure control. The pressure control
gives more comfort to the user, as it allows the pump
to start and stop automatically according to demand.
JP Boosters are available in the following variants:
• JP PM: a jet pump with a pressure manager
(Grundfos PM 1)
• JP PT-V: a jet pump with a vertical pressure tank
and a pressure switch
• JP PT-H: a jet pump with a horizontal pressure
tank and a pressure switch.
AISI 316 variant
A special variant of the JP pump is available with
components made with a higher stainless-steel
grade. This pump is especially suitable for pool-
cleaning and saltwater applications.
TM072474
Left to right: JP PT-V, JP PT-H, JP PM and JP
5.1 Product overview, JP
1
2
7
3
4
5
6
TM072509
14
English (GB)

Pos. Description
1 Priming plug
2 G1 outlet connection
3 Lifting handle
4 Terminal box and cable connection
5 Base plate
6 Drain plug
7 G1 inlet connection
5.2 Product overview, JP Booster
3
3
5
4
6
2
2
2
1
TM072656
JP PM (top), JP PT-H (left), JP PT-V (right)
Pos. Description
1 Pressure Manager
2 JP pump
3 Pressure switch
4 Pressure tank, horizontal
5 Pressure tank, vertical
6 Base plate
5.3 Intended use
Only use the product according to the
specifications stated in these installation
and operating instructions.
The product is suitable for pressure boosting of clean
water in domestic water-supply systems.
Related information
4. Startup of the product
5.4 Pumped liquids
5.3.1 Intended use of the AISI 316 variant
WARNING
Electric shock
Death or serious personal injury
‐Do not use the product for cleaning
and other maintenance of swimming
pools or similar places if people are in
the water.
CAUTION
Impurities in the water
Minor or moderate personal injury
‐Do not use the product for drinking
water.
The AISI 316 variant of the JP pump is especially
suitable for pool-cleaning and saltwater applications.
5.4 Pumped liquids
WARNING
Flammable material
Death or serious personal injury
‐Do not use the product for flammable
liquids such as diesel oil, petrol or
similar liquids. The product must only
be used for water.
WARNING
Toxic material
Death or serious personal injury
‐Do not use the product for toxic
liquids. The product must only be used
for water.
WARNING
Corrosive substance
Death or serious personal injury
‐Do not use the product for aggressive
liquids. The product must only be used
for water.
If the water contains sand, gravel or other
debris, there is a risk of pump blockage
and pump damage. Install a filter on the
inlet side or apply a floating strainer to
protect the pump.
The product is suitable for pumping clean, thin, non-
aggressive, non-toxic and non-explosive liquids
without solid particles or fibres. Examples of liquids:
• potable water
• rainwater.
15
English (GB)

Related information
4. Startup of the product
5.3 Intended use
5.5 Identification
5.5.1 Nameplate example for JP and JP Booster
Type: JP 5-48 PT-H No: 99XXXXXX P4 1825
Qmin: 1.2 m3/h Qmax: 4.8 m3/h IP: 44
Hmin: 25 m Hmax: 48.3 m
Class: F
n: 2800 min-1
25 µF / 250 V ~
pmax: 0.6/6 Mpa/bar
Tmax amb: 40 ˚C S1 / 55 ˚C S3
Tmax liquid: 40 ˚C S1 / 60 ˚C S3
Serial nr. XXXXXX
P1: 1.45 kW / 1.95 HP
P2: 1.36 kW / 1.49 HP
U: 1x230 V~ 50 Hz
Made in Hungary by Grundfos
2
3
4
5
6
7
8 9
10
13
12
11
14
15
16171819
I1/1: 7.6 A
1DK - 8850 Bjerringbro Denmark
TM072531
Pos. Description
1 Type
2 Min. flow rate and max. flow rate
3 Min. head and Max. head
4 Max. pressure
5 Supply voltage and Frequency
6 Full-load current
7 Approvals
8 Power consumption
9 Rated power
10 Country of origin
11 Capacitor data
12 Speed of rotation
13 Serial number
14 Insulation class
15 Enclosure class
16 Factory and production code, year and week
17 Product number
18 Max. ambient temperature
19 Max. liquid temperature
Related information
2.1 Inspecting the product
5.5.2 Type key, JP pump and booster
Example:
JP . 3- . 42 . PT- . V . 1x230 V . 50 Hz . 2m .
SCHUKO . HU
Description
JP Jet Pump
3- Max. flow rate [m3/h]
42 Max. head [m]
PT-
Booster type, if applicable:
• PT: Pressure Tank
• PM: Pressure Manager
• PS: Pressure Switch
V
Tank type, if applicable:
• V: Vertical
• H: Horizontal
1x230 V Voltage [V]
50 Hz Frequency [Hz]
2m Cable length [m]
SCHUKO Plug type
HU Country of origin
6. Service
WARNING
Electric shock
Death or serious personal injury
‐Switch off the power supply before you
start any work on the product. Make
sure that the power supply cannot be
switched on accidentally.
WARNING
Chemical hazard
Death or serious personal injury
‐Make sure that the product has only
been used for water. If the product has
been used for pumping aggressive
liquids, flush the system with clean
water before you start work on the
product.
WARNING
Biological hazard
Death or serious personal injury
‐Make sure that the product has only
been used for water. If the product has
been used for pumping aggressive
liquids, flush the system with clean
water before you start work on the
product.
16
English (GB)

WARNING
Pressurised system
Death or serious personal injury
‐Before dismantling the pump, drain the
system or close the isolating valves on
both sides of the pump. Slowly loosen
the drain plug and unpressurise the
system.
CAUTION
Impurities in the water
Minor or moderate personal injury
‐Before the pump is used for supplying
drinking water, flush the pump
thoroughly with clean water.
‐Use spare parts approved by
Grundfos.
Only qualified persons are allowed to
service the pump.
6.1 Maintenance
The product is maintenance-free during normal
operation. For cleaning, use a dry and dust-free cloth.
6.2 Maintaining the pressure tank
Check the precharge pressure annually.
The pressure tanks are supplied from factory with a
precharge pressure. See tank nameplate.
Do not use a tank with signs of damage, such as
dents, leakage or corrosion.
6.2.1 Adjusting the precharge pressure
CAUTION
Pressurised system
Minor or moderate personal injury
‐Before starting work on the product,
make sure there is no system pressure
on the tank.
‐Disconnect pumps or switch off the
power supply.
1. Make sure that there is no water pressure in the
tank. Switch off the pump and open a tap, or
close the isolating valves and drain the pump.
2. Use a suitable pressure gauge to check the
precharge pressure.
3. Release or add compressed air to make the
precharge pressure equal to the recommended
precharge pressure.
4. If water escapes during the precharge-pressure
check, the membrane is defective.
6.3 Service kits
For further information on service kits, see Grundfos
Product Center at www.product-
selection.grundfos.com.
7. Taking the product out of operation
WARNING
Electric shock
Death or serious personal injury
‐Switch off the power supply before you
start any work on the product. Make
sure that the power supply cannot be
switched on accidentally.
If the product is taken out of operation for a period of
time, for example during winter, it must be
disconnected from the power supply and placed in a
dry location.
Follow these steps:
1. Disconnect the product from the power supply.
2. Open a tap to release the pressure in the pipe
system.
3. Close the isolating valves and/or drain the pipes.
4. Gradually loosen the drain plug to release the
pressure in the product.
5. Drain the product by removing the drain plug.
6. Store the product according to the recommended
storing conditions.
Related information
7.1 Draining JP and JP PT-V
7.2 Draining JP PT-H
7.3 Storage of the product
7.1 Draining JP and JP PT-V
To drain the JP pump and JP Booster with a vertical
pressure tank, do as follows:
1. Unscrew the drain plug using a screw driver.
2. Let the water flow out of the pump.
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English (GB)

3. When the pump is empty, refit the plug by hand.
TM072420
Related information
7. Taking the product out of operation
7.2 Draining JP PT-H
To drain JP Booster with a horizontal pressure tank,
do as follows:
1. Drain the pump by removing the drain plug.
2. Unscrew the hose on the tank.
3. Tilt the tank so that the water flows out.
4. When the tank is empty, refit the hose.
TM072432
Related information
7. Taking the product out of operation
7.3 Storage of the product
WARNING
Electric shock
Death or serious personal injury
‐Switch off the power supply before you
start any work on the product. Make
sure that the power supply cannot be
switched on accidentally.
If the product is to be stored for a period of time, for
example during winter, drain it by removing the drain
plug and store the product indoors in a dry location.
During storage the temperature must be between -40
and +70 ˚C and have a maximum relative humidity of
98 % RH.
Related information
7. Taking the product out of operation
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English (GB)

7.4 Frost protection
If the product is not used during periods of frost, it
must be drained to avoid damage.
8. Fault finding the product
WARNING
Electric shock
Death or serious personal injury
‐Switch off the power supply before you
start any work on the product. Make
sure that the power supply cannot be
switched on accidentally.
WARNING
Chemical hazard
Death or serious personal injury
‐Make sure that the product has only
been used for water. If the product has
been used for pumping aggressive
liquids, flush the system with clean
water before you start work on the
product.
WARNING
Pressurised system
Death or serious personal injury
‐Before dismantling the product, drain
the system or close the isolating valves
on both sides of the product. Slowly
loosen the drain plug and unpressurise
the system.
8.1 The pump does not start
Cause
Supply failure.
Remedy
Cut in the circuit breaker or replace the fuses. If the
new fuses also blow, check the electrical
installation.
Cause
The pump is blocked by impurities.
Remedy
1. Clean the pump.
2. Clean or replace the strainer in the inlet pipe.
Cause
The motor is defective.
Remedy
Replace the pump.
8.2 The pump stops unexpectedly during
operation and starts again after a while
The thermal switch in the motor has tripped due to
overheating and runs intermittent operation. The
thermal switch will cut in automatically when the
motor has cooled sufficiently. If the problem persists,
check the possible causes:
Cause
The impeller is stuck.
Remedy
Clean the pump.
Cause
The motor is defective.
Remedy
Replace the pump.
Cause
The ambient temperature is too high.
Remedy
Make sure the ambient temperature is below the
maximum ambient temperature stated on the
nameplate.
8.3 The pump runs, but does not deliver the
expected amount of water
Cause
The outlet pipe is blocked.
In this case, the pump typically delivers a reduced
quantity of water at a high pressure.
Remedy
Clean the pipe or open the isolating valves, if any.
Cause
The pump is not filled with water.
Remedy
Prime the pump.
Cause
The inlet pipe is blocked by impurities.
Remedy
Clean the inlet pipe. Clean or replace the strainer
in the inlet pipe.
Cause
The pump is blocked by impurities.
Remedy
Clean the pump. Clean or replace the strainer in
the inlet pipe.
Cause
The suction lift is too high.
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English (GB)

Remedy
Change the position of the pump. The suction lift
must not exceed 8 m.
Cause
The inlet pipe is too long.
Remedy
Change the position of the pump.
Cause
The diameter of the inlet pipe is too small.
Remedy
Replace the inlet pipe.
Cause
The inlet pipe is not immersed deeply enough.
Remedy
Make sure that the inlet pipe is immersed
sufficiently.
Cause
The inlet pipe is leaking.
Remedy
Repair or replace the pipe.
8.4 Fault finding boosters with a pressure
manager
8.4.1 Operating panel for pressure manager PM 1
Reset
Power on
Pump on
Alarm
PM 1
2
3
1
4
TM039360
Operating panel on pressure manager PM 1
Pos. Symbol Description
1Power
on
The green indicator light is
permanently on when the power
is on.
2Pump
on
The green indicator light is
permanently on when the pump
is running.
3Alarm
The red indicator light is
permanently on or flashes when
the pump has stopped due to an
operating fault.
4Reset
The reset button is used for the
following:
• resetting fault indications
• enabling and disabling the
anti-cycling function.
For indicator light check, all indicator lights illuminate
when the power is switched on.
8.4.2 The "Alarm" indicator light flashes once at a
regular interval
For systems without a pressure tank.
The anti-cycling function has stopped the pump
because the pump starts and stops too frequently.
Cause
A tap has not been entirely closed after use.
Remedy
Make sure all taps are closed.
Cause
There is a minor leakage in the system.
Remedy
Make sure there are no leakages in the system.
8.4.4 The "Power on" indicator light is off even
though the power supply has been switched
on
Cause
The fuses in the electrical installation have blown.
Remedy
Replace the fuses. If the new fuses also blow,
check the electrical installation for malfunctions.
Cause
The earth-leakage circuit breaker or the voltage-
operated circuit breaker has tripped.
Remedy
Cut in the circuit breaker.
Cause
The pressure manager is defective.
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English (GB)