Grundfos TP User manual

TP, TPD
Installation and operating instructions
TP TPD
Installation and operating instructions
(all available languages)
http://net.grundfos.com/qr/i/96404999
GRUNDFOS INSTRUCTIONS

TP, TPD
English (GB)
Installation and operating instructions ..................................5
Български (BG)
Упътване за монтаж и експлоатация.................................26
Čeština (CZ)
Montážní a provozní návod ........................................52
Deutsch (DE)
Montage- und Betriebsanleitung .....................................74
Dansk (DK)
Monterings- og driftsinstruktion .....................................100
Eesti (EE)
Paigaldus- ja kasutusjuhend.......................................122
Español (ES)
Instrucciones de instalación y funcionamiento...........................144
Suomi (FI)
Asennus- ja käyttöohjeet .........................................169
Français (FR)
Notice d'installation et de fonctionnement..............................190
Ελληνικά (GR)
Οδηγίες εγκατάστασης και λειτουργίας................................214
Hrvatski (HR)
Montažne i pogonske upute .......................................239
Magyar (HU)
Telepítési és üzemeltetési utasítás ..................................260
Italiano (IT)
Istruzioni di installazione e funzionamento .............................284
Lietuviškai (LT)
Įrengimo ir naudojimo instrukcija ....................................308
Latviešu (LV)
Uzstādīšanas un ekspluatācijas instrukcija .............................329
Nederlands (NL)
Installatie- en bedieningsinstructies ..................................352
Polski (PL)
Instrukcja montażu i eksploatacji....................................376
3
Table of contents

Português (PT)
Instruções de instalação e funcionamento .............................400
Română (RO)
Instrucţiuni de instalare şi utilizare...................................424
Srpski (RS)
Uputstvo za instalaciju i rad .......................................447
Svenska (SE)
Monterings- och driftsinstruktion ....................................468
Slovensko (SI)
Navodila za montažo in obratovanje .................................490
Slovenčina (SK)
Návod na montáž a prevádzku .....................................512
中文 (CN)
安装和使用说明书 ..............................................534
Bahasa Indonesia (ID)
Petunjuk pengoperasian dan pemasangan.............................553
Macedonian (MK)
Упатства за монтирање и ракување ................................576
(AR) ةيبرعلا
    .............................................601
Shqip (SQ)
Udhëzimet e instalimit dhe funksionimit ...............................622
Appendix A..................................................646
4TP, TPD
Table of contents

English (GB) Installation and operating instructions
Original installation and operating instructions
Table of contents
1. General information ............. 5
1.1 Hazard statements .............. 5
1.2 Notes ..................... 5
2. Product introduction ............ 6
2.1 Product description .............. 6
2.2 Identification.................. 6
2.3 Applications .................. 9
3. Receiving the product............10
3.1 Delivery ....................10
4. Installing the product ............10
4.1 Location ....................10
4.2 Mechanical installation ............11
4.3 Frost protection ................15
4.4 Electrical connection .............16
5. Starting up the product ...........18
5.1 Flushing the pipe system ...........18
5.2 Priming ....................18
5.3 Checking the direction of rotation ......19
5.4 Starting up the pump .............19
5.5 Shaft seal run-in................19
5.6 Frequency of starts and stops ........19
6. Handling and storing the product .....19
6.1 Storing the product ..............19
7. Servicing the product ............20
7.1 Contaminated products ............20
7.2 Adjusting the shaft ..............20
7.3 Blanking flanges ...............21
7.4 Maintaining the product............21
8. Fault finding the product ..........22
9. Technical data ................23
9.1 Operating conditions .............23
9.2 Enclosure class ................24
9.3 Electrical data .................24
9.4 Sound pressure level .............24
9.5 Environment..................25
10. Disposing of the product ..........25
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.
5
English (GB)

2. Product introduction
2.1 Product description
These instructions apply to the pump types TP and
TPD fitted with Grundfos motors or Siemens motors.
If the pump is fitted with another motor make, please
note that the motor data may differ from the data
stated in these instructions.
2.2 Identification
2.2.1 Nameplate
4
6
H m
n min -1
%
MEI
ηp
(in.)
HzType/Model f DK-8850 Bjerringbro, Denmark
9987276 1
Ver.
Q
p/t
Imp. Dia.
0.70 60
TP 80-160/2 A-F-A-BQQE-JX2
A98958110P220150001
10/120
3.56
Made in Hungary
11.5
72.6
3360
m3/h
bar/°CMAX
51.3
1
11
5
3
2
9
78
12 10
PEICL :0.89
TM070107
Example of TP nameplate
Legend
Pos. Description
1 Type designation
2 Identification code
A Service model
98958110 Product number
P2 Production site code
2015 Production year and week
(YYWW)
0001 Serial number
3 Nominal flow rate
4 Nominal pump head
5 Pressure rating and maximum temperature
6 Hydraulic efficiency at best efficiency point
7 Minimum efficiency index
8 Frequency
9 Actual impeller diameter
10
Drinking water approval
or Pump Energy Index (PEI)
PEICL: constant load
PEIVL: variable load
11 Country of origin
12 Rated pump speed
6
English (GB)

2.2.2 Type key
Example of type key: TPED 65-120/2S-A-F-A-BQQE-GDB
Pos. 1 2 3 4 5 6 7 8 9 10 11 12 13 14
Code TP E D 65 -120 /2 S -A -F -A -BQQE -G D B
Pos. Description
1 Pump range
2 Electronically speed-controlled pump, Series 1000, 2000
3 Twin-head pump
4 Nominal diameter of inlet and outlet ports, DN
5 Maximum head [dm]
6 Pole number
7
Code for pump version. The codes may be combined:
[Blank]: TPE Series 1000 with MGE motor and without sensor
S: TPE Series 2000 with factory-fitted differential-pressure sensor
NC: TPE Series 1000 with Siemens motor with integrated CUE
SC: TPE Series 2000 with built-in differential-pressure sensor and Siemens motor with integrated CUE
8
Code for pump version. The codes may be combined:
A: Basic version
A3: PN 25 flange
B: Oversize motor
(+E): With ATEX approval, certificate or test report, the second character of the code for pump version
is an E
I: PN 6 flange
X: Special version
9
Code for pipe connection:
F: DIN flange
O: Union
10
Code for materials:
A: Basic version
I: Stainless steel 1.4308 pump housing and motor stool
Z: Bronze pump housing and motor stool
B: Bronze impeller
S: Stainless steel 1.4408 impeller
O: Ductile cast-iron pump housing with cast-iron impeller
Y: Ductile cast-iron pump housing with bronze impeller
Q: Ductile cast-iron pump housing with stainless steel 1.4408 impeller
11 Code for shaft seal including other plastic and rubber pump parts, except the neck ring. See Codes for
shaft seal.
12 Code for rated motor power [kW]. See Codes for rated motor power.
13 Code for phase and voltage or other information [V]. See Codes for phase and voltage or other
information.
14 Code for speed variant [rpm]. See Codes for speed variant.
7
English (GB)

Codes for shaft seal
Code
example
Descriptio
nCode explanation
BShaft seal
type
A: O-ring seal with fixed
seal driver
B: Rubber bellows seal
D: O-ring seal, balanced
G: Bellows seal with
reduced seal faces
R: O-ring seal with
reduced seal faces
Q
Material of
rotating
face
A: Carbon, antimony-
impregnated
B: Carbon, resin-
impregnated
Q: Silicon carbide
Q
Material of
stationary
seal
B: Carbon, resin-
impregnated
Q: Silicon carbide
U: Tungsten carbide
E
Material of
secondary
seal
E: EPDM
P: NBR rubber
V: FKM
F: FXM
Codes for rated motor power
Pos. 12 in TP, TPD type key example.
Code Description
[hp] [kW]
A 0.16 0.12
B 0.25 0.18
C 0.33 0.25
D 0.5 0.37
E 0.75 0.55
F 1 0.75
G 1.5 1.1
H 2 1.5
I 3 2.2
J 4 3
K5 (5.51) 3.7 (41)
L 7.5 5.5
M 10 7.5
N 15 11
O 20 15
Code Description
[hp] [kW]
P 25 18.5
Q 30 22
R 40 30
S 50 37
T 60 45
U 75 55
V 100 75
W 125 90
XBare shaft
pump
Y> 2002> 1502
1 150 110
2 175 132
3 200 150
421531603
525031853
1 Value in bracket is for the standard IEC motor size.
Value outside bracket is for the motor size according
to NEMA standards.
2 Used for pumps where the pump shaft input power
exceeds 200 hp (150 kW) and is not regulated under
the DOE pump rule.
3 Special cases with power sizes above 200 hp (150
kW) which are still regulated under the DOE pump
rule. For example: Pump has a P2 value of 198 hp
(147.6 kW) in its duty point (in DOE scope) but
customer wants the 215 hp (160 kW) motor instead of
the 200 hp (150 kW). The pump is in scope of the
DOE regulation and requires a PEI value and a motor
code.
8
English (GB)

Codes for phase and voltage or other information
Pos. 13 in TP, TPD type key example.
Code Description
AE-motor (ECM1), 1 x 200-240 V
BE-motor (ECM1), 3 x 200-240 V
CE-motor (ECM1), 3 x 440-480 V
DE-motor (ECM1), 3 x 380-500 V
VIntended for use with external VFD
only, asynchronous motor
W Not for sale in North America
XNo motor or US DOE regulated motor
(CC marked motor)
Y Out of DOE scope
Z E-motor, asynchronous motor
1ECM: Electronically Commutated Motor.
Codes for speed variant
Pos. 14 in TP, TPD type key example.
Code Description
A1450-2200 RPM, E-motor (ECM1)
B2900-4000 RPM, E-motor (ECM1)
C4000-5900 RPM, E-motor (ECM1)
1 2-pole, 50 Hz (Asynchronous motor)
2 2-pole, 60 Hz (Asynchronous motor)
3 4-pole, 50 Hz (Asynchronous motor)
4 4-pole, 60 Hz (Asynchronous motor)
5 6-pole, 50 Hz (Asynchronous motor)
6 6-pole, 60 Hz (Asynchronous motor)
7 8-pole, 50 Hz (Asynchronous motor)
8 8-pole, 60 Hz (Asynchronous motor)
1ECM: Electronically Commutated Motor.
2.3 Applications
The pumps are designed to circulate hot or cold water
in residential, institutional and industrial applications
in systems, such as:
• heating systems
• district heating plants
• central heating systems for blocks of flats
• air-conditioning systems
• cooling systems.
In addition, the pump range is used for liquid transfer
and water supply in systems such as:
• washing systems
• hot water recirculation systems
• industrial systems in general.
To ensure optimum operation, the dimensioning
range of the system must fall within the performance
range of the pump.
2.3.1 Pumped liquids
TP, TPD pumps are suitable for thin, clean, non-
aggressive and non-explosive liquids without solid
particles or fibres that may attack the pump
mechanically or chemically.
Examples:
• Central heating system water (the water must
meet the requirements of accepted standards on
water quality in heating systems)
• cooling liquids
• hot tap water
• industrial liquids
• softened water.
The pumping of liquids with a density and/or
kinematic viscosity higher than that of water will have
the following effects:
• a considerable pressure drop
• a drop in hydraulic performance
• a rise in power consumption.
In such cases, the pump must be fitted with a bigger
motor. If in doubt, contact Grundfos.
The EPDM O-rings fitted as standard are primarily
suitable for water.
If the water contains mineral/synthetic oils or
chemicals or if other liquids than water are pumped,
the O-rings must be chosen accordingly.
9
English (GB)

3. Receiving the product
3.1 Delivery
The pump is delivered from the factory in a carton
with a wooden bottom, which is specially designed for
transport by fork-lift truck or a similar vehicle.
4. Installing the product
CAUTION
Hot or cold surface
Minor or moderate personal injury
‐When pumping hot or cold liquids,
make sure that persons cannot
accidentally come into contact with hot
or cold surfaces.
4.1 Location
The pump must be sited in a dry, well-ventilated, but
frost-free position.
When installing pumps with oval bolt holes in the
pump flange (PN 6/10), use washers as shown in the
figure below.
A: Washer
B: Installation side
C: Pump side
A
B
C
TM010683
Use of washers for oval bolt holes
Arrows on the pump housing show the direction of
flow of liquid through the pump.
Pumps with motors smaller than 11 kW can be
installed in horizontal or vertical pipes.
Pumps with motors of 11 kW and up may only be
installed in horizontal pipes with the motor in vertical
position.
However, some TP, TPE pumps of 11 kW and up may
be suspended directly in the pipes (horizontally or
vertically). See the section TP, TPE pumps from 11
kW and up suspended in the pipes.
In installations where the pump is suspended directly
in the pipes, the pump can support the pipe length L
on both sides of the pump (L less than 3 x DN), see
the figure below. In installations where the pump is
suspended directly in the pipes, the pump must be
lifted and held in correct position by means of ropes
or similar until both pump flanges are completely
fastened to the pipe flanges.
L
L
TM063518
Pump suspended directly in the pipes
The motor must never be installed below
the horizontal plane.
For inspection and motor or pump head removal, the
following clearance is required above the motor:
• 300 mm for motors up to and including 4.0 kW.
• 1 m for motors of 5.5 kW and up.
See the figure below.
A
TM003733
Required clearance above the motor
Motor size A
0.25 - 4.0 kW ≥ 300 mm
5.5 kW and up ≥ 1 m
Twin-head pumps installed in horizontal pipes must
be fitted with an automatic vent in the upper part of
the pump housing. See the figure below. The
automatic vent is not supplied with the pump.
10
English (GB)

90O
TM038127
Automatic vent
If the liquid temperature falls below the ambient
temperature or if the pump is installed outside,
condensation may form in the motor during inactivity.
In this case, make sure that the drain hole in the
motor flange is open and points downwards. See the
figure below.
A
A
TM009831
A: Drain hole
Drain hole in motor flange
If twin-head pumps are used for pumping liquids with
a temperature below 0 °C (32 °F), condensed water
may freeze and cause the coupling to get stuck. The
problem can be remedied by installing heating
elements. For pumps with motors smaller than 11 kW,
the pump must be installed with the motor shaft in
horizontal position.
4.2 Mechanical installation
The pump must be installed according to
national water regulations and standards.
4.2.1 Lifting the product
DANGER
Overhead load
Death or serious personal injury
‐The lifting eyes fitted to large pump
motors can be used for lifting the pump
head (motor, motor stool and impeller).
Do not use the lifting eyes for lifting the
entire pump and motor assembly.
‐TPD: Do not use the centrally
positioned thread of the pump housing
for lifting purposes as the thread is
placed below the centre of gravity of
the pump.
Pumps without lifting eyes must be lifted by means of
nylon straps.
TM027007
TP pump without lifting eyes
11
English (GB)

TM027008
TPD pumps without lifting eyes
Pumps with lifting eyes must be lifted by means of
nylon straps and shackles.
TM027009
TP pump with lifting eyes
TM027010
TPD pump with lifting eyes
4.2.2 Pipes
Fit isolating valves on either side of the pump to avoid
draining the system if the pump needs to be cleaned
or repaired.
The pump is suitable for pipeline mounting, provided
that the pipes are adequately supported either side of
the pump. TP 25-50, 25-80, 25-90, 32-50, 32-80,
32-90, 40-50, 40-80 and 40-90 are designed for
pipeline mounting only.
When installing the pipes, make sure that the pump
housing is not stressed by the pipes.
The inlet and outlet pipes must be of an adequate
size, taking the pump inlet pressure into account.
To avoid sediment buildup, do not fit the pump at the
lowest point of the system.
Install the pipes so that air pockets are avoided,
especially on the inlet side of the pump. See the
figure below.
12
English (GB)

TM002263
Correct pipes on the inlet side of the pump
DANGER
Pump can explode
Death or serious personal injury
‐The pump is not allowed to run against
a closed valve except during startup.
Operating against a closed valve at an
extended period of time will cause an
increase in temperature and the
formation of steam and may result in
damages to or explosion of the pump
housing. The valve must be kept open
during operation.
If there is any danger of the pump running against a
closed outlet valve, ensure a minimum liquid flow
through the pump by connecting a bypass or a drain
to the outlet pipe. The drain can for instance be
connected to a tank. The minimum flow rate must be
at least 10 % of the maximum flow rate. The flow rate
and head are stated on the pump nameplate.
4.2.3 Elimination of noise and vibrations
In order to achieve optimum operation and minimum
noise and vibration, consider vibration damping of the
pump. Generally, always consider this for pumps with
motors of 11 kW and up. Vibration damping is
mandatory for motors of 90 kW and up as well as the
pumps stated in the table below:
Pump type P2
[kW]
Frequency
[Hz]
TP 200-280/4 37 60
TP 200-290/4 37 50
TP 200-320/4 45 60
TP 200-360/4 55 60
TP 200-390/4 75 60
Smaller motor sizes, however, may also cause
undesirable noise and vibration.
Noise and vibration are generated by the revolutions
of the motor and pump and by the flow in pipes and
fittings. The effect on the environment is subjective
and depends on correct installation and the state of
the rest of the system.
Elimination of noise and vibrations is best achieved
by means of a concrete foundation, vibration dampers
and expansion joints. See the figure below.
• • ••• • ••• •••• • ••• • ••• • ••• • ••• • ••• • ••• • ••• • •••• •••• • ••• •••• • ••• • ••• • ••• • ••• • ••• • ••• • •••• •••• • ••• • ••• •••• • ••• • ••• • ••• • ••• • ••• • •••• •••• • ••• • ••• • ••• ••• •
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B
C
A
TM024993
Foundation for TP pump
Pos. Description
A Expansion joint
B Concrete pedestal
C Vibration damper
At high liquid velocities (greater than 5 m/s), we
recommend that you fit larger expansion joints
matching the pipes.
TM049629
TP pump installed with larger expansion joints
13
English (GB)

4.2.4 Foundation
We recommend that you install the pump on a
concrete foundation which is heavy enough to provide
permanent and rigid support for the entire pump. The
foundation must be capable of absorbing any
vibration, normal strain or shock. As a rule of thumb,
the weight of the concrete foundation must be 1.5
times the weight of the pump. Place the pump on the
foundation and fasten it.
Recommended concrete foundations for TP, TPD
Series 300 pumps
For TP Series 300 pumps with weights of 150 kg or
more, we recommend that you mount the pump on a
concrete foundation with the dimensions stated in the
table below. The same recommendation applies for
TPD Series 300 pumps with weights of 300 kg or
more.
X
Z
Y
TM039190
Foundation for TP, TPD Series 300 pumps
Concrete foundation dimensions
Pump weight
[kg]
Y
(height)
[mm]
Z
(length)
[mm]
X
(width)
[mm]
150
≤ DN 200
280 565 565
200 310 620 620
250 330 670 670
300 360 710 710
350 375 750 750
400 390 780 780
450 410 810 810
500 420 840 840
550 440 870 870
600 450 900 900
650 460 920 920
700 470 940 940
750 480 970 970
Concrete foundation dimensions
Pump weight
[kg]
Y
(height)
[mm]
Z
(length)
[mm]
X
(width)
[mm]
800 490 990 990
850 500 1010 1010
900 510 1030 1030
950 520 1050 1050
1000 530 1060 1060
1050 540 1080 1080
1100 550 1100 1100
1150 560 1100 1100
1200 560 1130 1130
1250 570 1150 1150
1300 580 1160 1160
1350 590 1180 1180
1400 600 1190 1190
1450 600 1200 1200
1500 610 1220 1220
1550 620 1230 1230
1600 620 1250 1250
1650 630 1250 1250
1700 635 1270 1270
800
DN 300
DN 350
DN 400
450 1400 800
1000 450 1400 1000
1200 450 1400 1200
1400 500 1600 1200
1600 500 1600 1350
1800 500 1600 1500
2000 550 1600 1600
2200 550 1700 1700
2400 550 1800 1800
2600 600 1800 1800
3000 600 2000 2000
3400 680 2000 2000
3800 760 2000 2000
4200 840 2000 2000
4600 920 2000 2000
5000 1000 2000 2000
5400 1080 2000 2000
14
English (GB)

4.2.5 Changing terminal box positions
DANGER
Electric shock
Death or serious personal injury
‐Before starting work on the pump,
make sure that the power supply has
been switched off and that it cannot be
accidentally switched on.
The terminal box can be turned to four positions, in
90 ° steps.
Change the terminal box position as follows:
1. If necessary, remove the coupling guards using a
screwdriver. Do not remove the coupling.
2. Remove the screws securing the motor to the
pump.
3. Turn the motor to the required position.
4. Replace and tighten the screws.
5. Replace the coupling guards.
4.2.6 Base plate
Single-head pumps (except TP 25-50, 25-80, 25-90,
32-50, 32-80, 32-90, 40-50, 40-80 and 40-90) have
two tapped holes in the bottom of the pump housing
which can be used for fitting a Grundfos base plate to
the pump. The base plate is available as an optional
extra.
Twin-head pumps have four tapped holes in the
bottom of the pump housing. For some twin-head
pumps, a base plate consisting of two halves is
available.
4.2.7 Insulation
Do not insulate the motor stool as this will
trap any vapour escaping from the shaft
seal, thus causing corrosion. Covering the
motor stool with insulation will also make
inspection and service difficult.
Follow the guidelines in the figure below when
insulating the pump.
AB
C
TM052328
Insulation of TP pumps
Pos. Description
A Without insulation
B Incorrect insulation
C Correct insulation
4.3 Frost protection
Pumps which are not being used during periods of
frost must be drained to avoid damage.
4.3.1 Condensation cover
When installing the pumps outdoors, provide the
motor with a suitable cover to avoid condensation,
and make sure that the drain hole in the motor flange
is open and points downwards. See the figure below.
A
A
TM009831
A: Drain hole
Drain hole in motor flange
When mounting the condensation cover on top of the
motor, make sure to leave enough space for the air to
cool the motor.
15
English (GB)

TM028514
Motors with condensation cover
4.4 Electrical connection
Make the electrical connection in accordance with
local regulations.
DANGER
Electric shock
Death or serious personal injury
‐Before removing the terminal box
cover and before removing or
dismantling the pump, make sure that
the power supply has been switched
off. Connect the pump to an external
main switch with a minimum contact
gap of 3 mm in all poles.
‐The pump must be connected to an
external main switch close to the pump
and to a motor-protective circuit
breaker. Make sure you can lock the
main switch in OFF position (isolated).
Type and requirements are specified in
EN 60204-1, 5.3.2.
DANGER
Electric shock
Death or serious personal injury
‐The motor must be protected against
overload by an external motor-
protective circuit breaker with IEC trip
class 10 or 20.
‐We recommend that you use trip class
20.
‐The current setting of the motor-
protective circuit breaker must be
adjusted to the nominal current stated
on the motor nameplate.
The operating voltage and frequency are stated on
the pump nameplate. Make sure that the motor is
suitable for the power supply on which it will be used.
Single-phase standard motors incorporate a thermal
switch and require no additional motor protection.
Three-phase motors must be connected to a motor
protection device.
Motors of 3 kW and up incorporate thermistors (PTC).
The thermistors are designed according to DIN
44082.
Make the electrical connection as shown in the
diagram inside the terminal box cover.
The motors of twin-head pumps are to be connected
separately.
4.4.1 Cable entry/screwed connection, MG motor
All motors are supplied without screwed cable entries.
The table below shows the numbers and sizes of
cable entry holes of the terminal box of Grundfos MG
motors according to the standard EN 50262.
Frame
size Model Number x dimensions Description
MG 71
and 80 B, C 2 x M20 x 1.5
The holes have
precast threads
and are closed
with knock-out
cable entries.
MG 90
and 100 B, C, D 4 x M20
The holes are
closed with
knock-out cable
entries.
MG 112
and 132
C, D, F,
H4 x M25
MG 160
and 180 F, H 4 x M40
2 x M20
4.4.2 Frequency converter operation
Motor types Siemens, MG 71 and MG 80
for supply voltages up to and including 440
V (seeing the motor nameplate) must be
protected against voltage peaks higher
than 650 V between the supply terminals.
16
English (GB)

Grundfos motors
All three-phase Grundfos motors from frame size 90
and up can be connected to a frequency converter.
The connection of a frequency converter will often
have the effect that the motor insulation system is
loaded more and that the motor will be more noisy
than during normal operation. In addition, large
motors are more at risk of being loaded with bearing
currents caused by the frequency converter.
Check these operating conditions if the pump is
driven via a frequency converter:
Operating conditions Action
2-pole motors from 45
kW, 4-pole motors from
37 kW and 6-pole motors
from 30 kW
Check that one of the
motor bearings is
electrically isolated.
Contact Grundfos.
Noise critical applications
Fit an output filter
between the motor and
the frequency converter;
this reduces the voltage
peaks and thus the
noise.
Particularly noise critical
applications Fit a sinusoidal filter.
Cable length
Fit a cable that meets the
specifications laid down
by the frequency
converter supplier. The
length of the cable
between motor and
frequency converter
affects the motor load.
Supply voltage up to 500
V
Check that the motor is
suitable for frequency
converter operation.
Supply voltage between
500 V and 690 V
Fit a sinusoidal filter
between the motor and
the frequency converter
which reduces the
voltage peaks and thus
the noise, or check that
the motor has reinforced
insulation.
Supply voltage of 690 V
and higher
Fit a sinusoidal filter and
check that the motor has
reinforced insulation.
Grundfos MG motors do not have
reinforced insulation. When it comes to
reinforced insulation, other motors
supplies are able to supply such motors as
FPV variants.
Other motor makes than Grundfos
Contact Grundfos or the motor manufacturer.
4.4.3 Synchronous motors
Pumps fitted with synchronous motors must be
connected to a Grundfos CUE frequency converter.
14
TM044289
Example of installation without filter
Symbol Designation
1 CUE
4 Standard motor
One line Unscreened cable
Double line Screened cable
Synchronous motors must not be
connected directly to mains supply.
The CUE must be of T/C CUE203 followed by
additional numbers and characters. See the CUE
Installation and operating instruction to setup
frequency driver together with synchronous motor.
If another frequency driver brand other than CUE is
required or specified, contact Grundfos.
T/C: CUE203 P1M2T5E20H1BXCXXXSXXXXAXBXCXXXXDX
Prod. no: 12345678
S
/
N
:
123456
G
234
IN: 3x380-500 V 50/60Hz 3.7A
OUT: 3x0-Vin 0-100Hz 4.1 A 2.8 kVA
CHASSIS/IP20 Tamb. 45C/122F
IIIIIIIIIIIBAR CODEIIIIIIIIIII
MADE IN DENMARK
Listed 76X1 E134261 Ind. Contr. Eq.
See manual for prefuse
CAUTION:
SEE MANUAL
/
VOIR MANUEL
WARNING:
STORED CHARGE DO NOT TOUCH UNTIL
4
MIN AFTER DISCONNECTION
CHARGE RESIDUELLE
,
ATTENDRE
4
MIN APRES DECONNEXION
1.5 kW (400V)
TM077181
Example of CUE nameplate
Text Description
T/C CUE: product name
203... :internal code
17
English (GB)

5. Starting up the product
5.1 Flushing the pipe system
CAUTION
Biological hazard
Minor or moderate personal injury
‐When pumping drinking water, the
pump must be flushed thoroughly with
clean water before startup in order to
remove any foreign matters, such as
preservatives, test liquid, or grease.
• Before starting up the pump, thoroughly clean,
flush and fill the pipe system with clean water.
The warranty does not cover any
damage caused by flushing the pipe
system by means of the pump.
The pump is not designed to pump
liquids containing solid particles such
as pipe debris and welding slag.
5.2 Priming
Always fill and vent the pump before
starting the pump. To ensure correct
venting, the vent screw must point
upwards.
5.2.1 Priming the product in closed systems or
open systems where the liquid level is above
the pump inlet
WARNING
Escaping liquid
Death or serious personal injury
‐Pay attention to the orientation of the
vent hole to ensure that the escaping
liquid does not cause personal injury or
damage to the motor or other
components.
‐In hot-liquid installations, pay special
attention to the risk of personal injury
caused by scalding hot liquid.
‐In cold-liquid installations, pay special
attention to the risk of personal injury
caused by cold liquid.
1. Close the isolating valve on the outlet side and
loosen the vent screw in the motor stool.
TM038126
Position of vent screw
2. Slowly open the isolating valve on the inlet side
until a steady stream of liquid runs out of the vent
hole.
3. Tighten the vent screw and completely open the
isolating valve(s).
5.2.2 Priming the product in open systems where
the liquid level is below the pump inlet
The inlet pipe and the pump must be filled with liquid
and vented before the pump is started.
1. Close the isolating valve on the outlet side and
open the isolating valve on the inlet side.
2. Loosen the vent screw.
3. Remove the plug from one of the pump flanges,
depending on the pump location.
4. Pour liquid through the priming hole until the inlet
pipe and the pump are filled with liquid.
5. Replace the plug and tighten securely.
6. Tighten the vent screw.
The inlet pipe can to some extent be filled with liquid
and vented before it is connected to the pump. A
priming device can also be installed before the pump.
TM038126
Position of vent screw
18
English (GB)

5.3 Checking the direction of rotation
Do not start the pump to check the direction of
rotation until it has been filled with liquid.
Do not check the direction of rotation with
the motor alone, as an adjustment of the
shaft position is required when the
coupling has been removed.
The correct direction of rotation is shown by arrows
on the motor fan cover or on the pump housing.
5.4 Starting up the pump
WARNING
Escaping liquid
Death or serious personal injury
‐Pay attention to the orientation of the
vent hole to ensure that the escaping
liquid does not cause personal injury or
damage to the motor or other
components.
‐In hot-liquid installations, pay special
attention to the risk of personal injury
caused by scalding hot liquid.
‐In cold-liquid installations, pay special
attention to the risk of personal injury
caused by cold liquid.
1. Open the isolating valve on the inlet side of the
pump completely and leave the isolating valve on
the outlet side almost closed.
2. Start the pump.
3. Vent the pump during startup by loosening the air
vent screw in the pump head or pump head cover
until a steady stream of liquid runs out of the vent
hole
4. When the pipe system has been filled with liquid,
slowly open the isolating valve on the outlet side
until it is completely open.
5.5 Shaft seal run-in
The seal faces are lubricated by the pumped liquid,
meaning that there may be a certain amount of
leakage from the shaft seal. When the pump is
started for the first time, or when a new shaft seal has
been installed, 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.
Under normal conditions, the leaking liquid will
evaporate. As a result, no leakage will be detected.
Liquids such as kerosene will not evaporate, and
drops will be visible, but this is not a shaft seal failure.
5.6 Frequency of starts and stops
Frame size Maximum number of starts per hour
2-pole 4-pole 6-pole
56-71 100 250 350
80-100 60 140 160
112-132 30 60 80
160-180 15 30 50
200-225 8 15 30
250-315 4 8 12
• On twin-head pumps, the duty and standby
pumps must be alternated on a regular basis, that
is once a week, to ensure an even distribution of
the operating hours on both pumps. Pump change
can be effected either manually or automatically
by installing a suitable pump controller.
• If twin-head pumps are used for hot water
recirculation, the duty and standby pumps must
be alternated on a regular basis, that is once a
day, to avoid blocking of the standby pump due to
deposits (calcareous deposits, etc.). We
recommend automatic pump change.
6. Handling and storing the product
6.1 Storing the product
The contractor must inspect the equipment on
delivery and make sure that it is stored in such a way
that corrosion and damage are avoided.
If you do not operate the pump soon after arrival,
store it in a clean, dry place with slow, moderate
changes in ambient temperature. Protect the pump
from moisture, dust, dirt and foreign bodies. Before
and during storage we recommend these
precautions:
1. Make sure that the bearings are filled with the
recommended grease to prevent moisture from
entering around the shaft.
2. Make sure that the inlet and outlet ports and all
other openings are covered with cardboard, wood
or masking tape to prevent foreign objects from
entering the pump.
3. Cover the unit with a tarpaulin or waterproof
material or other suitable covering if it is to be
stored where there is no protective covering.
4. Rotate the shaft two turns every two weeks to
prevent corrosion of the bearing surfaces and the
shaft seal faces due to moisture.
If more than six months will pass before the
equipment is put into operation, consider applying a
suitable corrosion inhibitor to the internal pump parts.
19
English (GB)

Make sure that the corrosion inhibitor used does not
affect the rubber parts with which it comes into
contact.
Commercially available preservatives can be used for
this purpose. Please observe the manufacturer’s
instructions for application or removal.
To prevent water, dust, etc. from entering the pump,
keep all openings covered until the pipes are to be
fitted. The cost of having to dismantle the pump
during startup to remove foreign objects can be very
high.
7. Servicing the product
7.1 Contaminated products
CAUTION
Biological hazard
Minor or moderate personal injury
‐Flush the pump thoroughly with clean
water and rinse the pump parts in
water after dismantling.
The product will be classified as contaminated if it has
been used for a liquid which is toxic or injurious to
health.
If you request Grundfos to service the product,
contact Grundfos with details about the liquid before
returning the product for service. Otherwise, Grundfos
can refuse to accept the product for service.
The product must be cleaned thoroughly before you
return it.
Costs of returning the product are to be paid by the
customer.
7.2 Adjusting the shaft
If the motor has been removed during installation or
for repair of the pump, the pump shaft must be
adjusted after the motor has been replaced.
7.2.1 Adjusting the shaft for pumps with two-part
coupling, TP Series 100 and 200
Make sure that the shaft pin is fitted in the pump
shaft.
Adjust the pump shaft as follows:
1. Remove the coupling guards using a screwdriver.
2. Fit the hexagon socket head screws in the
coupling and leave loose.
3. Raise the coupling and the pump shaft as far as
possible (towards the motor) with a screwdriver or
a similar tool so that the pump and motor shafts
touch each other.
TM006415
Raising the coupling and the pump shaft
4. Tighten the hexagon socket head screws in the
coupling to 5 Nm (0.5 kpm).
5. Check that the gaps either side of the coupling
halves are equal.
6. Tighten the screws two and two (one side at a
time) to the torque stated below.
Hexagon socket head screw Torque
M6 x 20 13 Nm (1.3 kpm)
M8 x 25 31 Nm (3.1 kpm)
7. Fit the coupling guards.
TM006416
Tightening the screws
7.2.2 Pumps with integral shaft and coupling
For pumps with integral shaft and coupling, we
recommend that you do not remove the motor. If the
motor has been removed, it is necessary to remove
the motor stool in order to refit the motor correctly.
Otherwise, the shaft seal may be damaged.
20
English (GB)