Grundfos CM User manual

GRUNDFOS INSTRUCTIONS
CM
Installation and operating instructions

2

Table of contents
CM
3
Declaration of conformity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
English (US)
Installation and operating instructions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Español (MX)
Instrucciones de instalación y funcionamiento . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Français (CA)
Notice d'installation et de fonctionnement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Declaration of conformity
4
Declaration of conformity
This EC declaration of conformity applies as from June 16, 2011.
US: EC declaration of conformity
We, Grundfos, declare under our sole responsibility that the products
CM, to which this declaration relates, are in conformity with these Council
directives on the approximation of the laws of the EC member states:
— Machinery Directive (2006/42/EC).
Standards used: EN 809: 2008 and EN 60204-1: 2006.
— Low Voltage Directive (2006/95/EC).
Applicable when the rated power is lower than 2.2 kW.
Standards used: EN 60335-1: 2002 and EN 60335-2-51: 2003.
— EMC Directive (2004/108/EC).
— Ecodesign Directive (2009/125/EC).
Electric motors:
Commission Regulation No. 640/2009.
Applies only to three-phase Grundfos motors marked IE2 or IE3.
See motor nameplate.
Standard used: EN 60034-30: 2009.
ES: Declaración CE de conformidad
Nosotros, Grundfos, declaramos bajo nuestra entera responsabilidad
que los productos CM, a los cuales se refiere esta declaración, están
conformes con las Directivas del Consejo en la aproximación de las
leyes de las Estados Miembros del EM:
— Directiva de Maquinaria (2006/42/CE).
Normas aplicadas: EN 809: 2008 y EN 60204-1: 2006.
— Directiva de Baja Tensión (2006/95/CE).
Aplicable cuando la potencia nominal es inferior a 2,2 kW.
Normas aplicadas: EN 60335-1: 2002 y EN 60335-2-51: 2003.
— Directiva EMC (2004/108/CE).
— Directiva sobre diseño ecológico (2009/125/CE).
Motores eléctricos:
Reglamento de la Comisión n.º 640/2009.
Válido sólo para motores trifásicos Grundfos pertenecientes a las
categorías IE2 e IE3. Consulte la placa de características del motor.
Norma aplicada: EN 60034-30: 2009.
FR: Déclaration de conformité CE
Nous, Grundfos, déclarons sous notre seule responsabilité, que les
produits CM, auxquels se réfère cette déclaration, sont conformes aux
Directives du Conseil concernant le rapprochement des législations des
Etats membres CE relatives aux normes énoncées ci-dessous :
— Directive Machines (2006/42/CE).
Normes utilisées : EN 809 : 2008 et EN 60204-1: 2006.
— Directive Basse Tension (2006/95/CE).
Applicable lorsque la puissance nominale est inférieure à 2,2 kW.
Normes utilisées : EN 60335-1 : 2002 et EN 60335-2-51 : 2003.
— Directive Compatibilité Electromagnétique CEM (2004/108/CE).
— Directive en matière d'écoconception (2009/125/CE).
Moteurs électriques :
Règlement de la Commission Nº 640/2009.
S'applique uniquement aux moteurs triphasés Grundfos marqués
IE2 ou IE3. Voir la plaque signalétique du moteur.
Norme utilisée : EN 60034-30 : 2009.
Tatabánya, 1st June 2011
Jannek Uldal Christensen
Research and Developement Manager
GRUNDFOS Manufacturing Ltd.
Búzavirág u. 14, Ipari Park
2800 Tatabánya, Hungary
Person authorised to compile technical file and
empowered to sign the EC declaration of conformity.

5
English (US)
English (US) Installation and operating instructions
CONTENTS
Page
1. Limited warranty
Products manufactured by GRUNDFOS PUMPS CORPORATION
(Grundfos) are warranted to the original user only to be free of
defects in material and workmanship for a period of 24 months
from date of installation, but not more than 30 months from date
of manufacture. Grundfos' liability under this warranty shall be
limited to repairing or replacing at Grundfos' option, without
charge, F.O.B. Grundfos' factory or authorized service station,
any product of Grundfos' manufacture. Grundfos will not be liable
for any costs of removal, installation, transportation, or any other
charges which may arise in connection with a warranty claim.
Products which are sold but not manufactured by Grundfos are
subject to the warranty provided by the manufacturer of said
products and not by Grundfos' warranty. Grundfos will not be
liable for damage or wear to products caused by abnormal
operating conditions, accident, abuse, misuse, unauthorized
alteration or repair, or if the product was not installed in
accordance with Grundfos' printed installation and operating
instructions.
To obtain service under this warranty, the defective product must
be returned to the distributor or dealer of Grundfos' products from
which it was purchased together with proof of purchase and
installation date, failure date, and supporting installation data.
Unless otherwise provided, the distributor or dealer will contact
Grundfos or an authorized service station for instructions. Any
defective product to be returned to Grundfos or a service station
must be sent freight prepaid; documentation supporting the
warranty claim and/or a Return Material Authorization must be
included if so instructed.
GRUNDFOS WILL NOT BE LIABLE FOR ANY INCIDENTAL OR
CONSEQUENTIAL DAMAGES, LOSSES, OR EXPENSES
ARISING FROM INSTALLATION, USE, OR ANY OTHER
CAUSES. THERE ARE NO EXPRESS OR IMPLIED
WARRANTIES, INCLUDING MERCHANTABILITY OR FITNESS
FOR A PARTICULAR PURPOSE, WHICH EXTEND BEYOND
THOSE WARRANTIES DESCRIBED OR REFERRED TO
ABOVE.
Some jurisdictions do not allow the exclusion or limitation of
incidental or consequential damages and some jurisdictions do
not allow limit actions on how long implied warranties may last.
Therefore, the above limitations or exclusions may not apply to
you. This warranty gives you specific legal rights and you may
also have other rights which vary from jurisdiction to jurisdiction.
2. Introduction
This manual describes the installation and operation of Grundfos
CM pumps.
3. Symbols used in this document
1. Limited warranty 5
2. Introduction 5
3. Symbols used in this document 5
4. Delivery and handling 6
5. Applications 6
6. Identification 6
6.1 Nameplates 6
7. Mechanical installation 7
7.1 Installation of pump 7
7.2 Pipework 7
7.3 Alternative connection positions 7
7.4 Terminal box positions 8
8. Electrical installation 8
8.1 Motor protection 8
8.2 Electrical connection 8
8.3 Frequency converter operation 9
9. Start-up 9
9.1 Priming 9
9.2 Checking the direction of rotation 9
10. Maintenance 9
10.1 Frost protection 9
10.2 Cleaning 9
11. Service 10
12. Technical data 10
12.1 Enclosure class 10
12.2 Sound pressure level 10
12.3 Ambient temperature 10
13. Maximum system pressure and permissible liquid
temperature 10
13.1 Minimum inlet pressure - NPSH 11
13.2 Maximum inlet pressure 11
14. Fault finding 12
15. Service documentation 12
16. Disposal 12
17. Additional curves and charts 13
18. Safety declaration 15
Warning
Prior to installation, read these installation and
operating instructions. Installation and operation
must comply with local regulations and accepted
codes of good practice.
Warning
The use of this product requires experience with
and knowledge of the product.
Persons with reduced physical, sensory or mental
capabilities must not use this product, unless
they are under supervision or have been
instructed in the use of the product by a person
responsible for their safety.
Children must not use or play with this product.
Warning
If these safety instructions are not observed, it
may result in personal injury!
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If these safety instructions are not observed, it
may result in malfunction or damage to the
equipment!
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Notes or instructions that make the job easier
and ensure safe operation.

English (US)
6
4. Delivery and handling
Grundfos CM pumps are delivered from factory in a packaging
specially designed for manual transport or transport by forklift
truck or a similar vehicle.
5. Applications
CM pumps are horizontal, multistage centrifugal pumps for the
pumping of clean, thin and non-explosive liquids, not containing
solid particles or fibers that may attack the pump mechanically or
chemically.
6. Identification
6.1 Nameplates
The pump and motor nameplates are positioned on the motor fan
cover or terminal box.
The data and information on the pump nameplate are described
in the table below. See the nameplate in fig. 1.
Fig. 1 Nameplate for pump
The data and information on the motor nameplate are described
in the table below. See the nameplate in fig. 2.
Fig. 2 Nameplate for motor
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In order to ensure safe transport, Grundfos
recommends to transport the pumps with
suitable lifting tools.
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If your pump is carrying the UL mark, official UL
approval has been given for this pump for use
with water only.
This product is Listed to applicable UL standards
and requirements by Underwriters Laboratories
Inc. for use with water only.
Pos. Description
1 Pump type
2 Pump model
3Environmental rating for enclosures based on NEMA type
designations
4 Enclosure class
5Maximum ambient temperature
[°F] / [°C]
6Maximum system pressure
[psi] / [[bar] / MPa]
7 Maximum liquid temperature [°F] / [°C]
8 Insulation class
9 Motor protection
10 Rated flow [GPM] / [m3/h]
11 Head at rated flow [psi] / [m]
12 Maximum head [psi] / [m]
TM04 0355 4908
Pos. Description
1 Number of phases
2 Voltage [V]
3 Maximum current [A]
4 Rated current [A]
5 Power output [kW] / [HP]
6Single-phase pumps only:
Capacitor size [PF] and voltage [V]
TM04 0356 0908
Model
IP T
Type Pmax
Tliq,max
bar MPa PSI
Q nom
H nom
H max
m³/h GPM
Env
m
m
PSI
PSI
Q nom
H nom
H max
m³/h GPM
m
m
PSI
PSI
°C °F
50 Hz
95120839
60 Hz
3455
6
77
89
10 10
11 11
12 12
66
1
10
11
12
10
11
12
2
Amb
°C °F
Insulation class
Imax
~/V
/A
/A
uF / V
kW
95120836
I1/1
P2
Imax
~/V
/A
/A
I1/1
P2
Capacitor
HP kW HP
uF / V
Capacitor
50 Hz 60 Hz
112
3
4
5
2
3
4
5
2
3
4
5
2
3
4
5
6 6

7
English (US)
7. Mechanical installation
Before installing the pump, confirm that the pump type and parts
are as ordered by checking the nameplate.
7.1 Installation of pump
The pump must be installed on a plane surface and secured so
that it cannot be displaced during start-up and operation.
If the liquid temperature becomes lower than the ambient
temperature, condensation may form in the motor during
inactivity. In such cases, the plug must be removed from the drain
hole in the motor, and the drain hole must point downwards.
See fig. 3.
Fig. 3 Drain hole position
The pump must be installed so that air locks are avoided in the
pump housing and pipework. Fig. 4 shows the permissible pump
positions.
Fig. 4 Pump positions
The pump should be installed with easy access for inspection,
maintenance and service.
The pump should be installed in a well-ventilated location.
Fig. 5 Allow minimum 2" distance from motor fan to a surface
7.2 Pipework
Install isolating valves at the suction and discharge sides of the
pump for ease of maintenance and service. If the pump is
installed above the liquid level, a non-return valve must be fitted
in the suction pipe below the liquid level.
The pump must not be stressed by the pipework. The pipework
must be correctly sized taking due account of the pump inlet
pressure.
If the pump is installed at the lowest point of the system,
impurities and sludge may accumulate in the pump.
Install the pipes so that air locks are avoided, especially on the
suction side of the pump. See fig. 6.
Fig. 6 Pipework
7.2.1 Pipe connection
Fig. 7 Suction and discharge ports
Torques
7.3 Alternative connection positions
The pump is available with various connection positions on
special request. See fig. 8.
Fig. 8 Alternative connection positions
TM04 3575 4708
TM03 8773 2509TM05 3286 1112
Drain hole
Floor
Up
Min. 2"
TM04 0338 0608
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Avoid damaging the pump when connecting the
suction and discharge pipes.
The torques in the table below must not be
exceeded.
TM04 0358 1008
Suction and discharge ports Torque [ft-lbs (Nm)]
1" 37 - 44 (50 - 60)
1 1/4" 37 - 44 (50 - 60)
1 1/2" 37 - 44 (50 - 60)
2" 37 - 44 (50 - 60)
TM03 8709 1008
Discharge port
Suction
port

English (US)
8
7.4 Terminal box positions
The pump is available with various terminal box positions on
special request. See fig. 9.
Fig. 9 Terminal box positions
8. Electrical installation
Check that the mains voltage and frequency correspond to the
values on the motor nameplate.
8.1 Motor protection
Single-phase motors, 1 x 115/230 V, 60 Hz, do not incorporate
motor protection and must be connected to a motor-protective
circuit breaker which can be manually reset. Set the motor-
protective circuit breaker according to the rated current of the
motor (I1/1). See nameplate.
Three-phase motors up to 3 hp must be connected to a motor-
protective circuit breaker which can be manually reset. Set the
motor-protective circuit breaker according to the rated current of
the motor (I1/1). See nameplate.
Motors with horsepower ratings of 3 hp and up have built-in
thermistors (PTC). The thermistors are designed according to
DIN 44082. The motor protection is of the TP 211 type, which
reacts to both slow- and quick-rising temperatures.
8.2 Electrical connection
Carry out the electrical connection as shown in the diagram
inside the terminal box cover.
Fig. 10 Wiring diagram
TM04 0357 1008
Warning
The electrical connection must be carried out in
accordance with local regulations.
Before starting work on the pump, make sure that
the power supply has been switched off and that it
cannot be accidentally switched on.
TM05 3306 1112
456
123
L1 L2 L3
J
J
456
987
L3 L2 L1
4
5
6
987
L3 L2 L1
J
J
4
56
12
3
L1
N 4
56
12
3L2
L1
213
213
Interchange any two line wires
to reverse rotation
Thermostat leads
(when provided)
Capacitor Capacitor
Low voltage High voltage
Low voltage
60 Hz, 208 - 230 V High voltage
60 Hz, 460 V
50 Hz, 400 V
Interchange any two line wires
to reverse rotation
Thermostat leads
(when provided)
H voltage, 3 x 575 V, 60 Hz
B voltage, 1 x 115/230 V, 60 Hz
E voltages, 3 x 208/230/440-480 V, 60 Hz

9
English (US)
8.3 Frequency converter operation
All three-phase motors can be connected to a frequency
converter.
Depending on the frequency converter type, this may cause
increased acoustic noise from the motor. Furthermore, it may
cause the motor to be exposed to detrimental voltage peaks.
*ML 71 and ML 80-based motors with phase insulation are
available on request.
The above disturbances, i.e. both increased acoustic noise and
detrimental voltage peaks, can be eliminated by fitting an LC filter
between the frequency converter and the motor.
For further information, please contact the frequency converter
supplier or Grundfos.
9. Start-up
9.1 Priming
1. Close the isolating valve on the discharge side of the pump.
2. Open the isolating valve in the suction pipe completely before
starting the pump.
3. Remove the priming plug. See fig. 11.
4. Fill the pump housing and the suction pipe completely with
liquid until a steady stream of liquid runs out of the priming
hole.
5. Fit and tighten the priming plug.
6. Slowly open the discharge isolating valve while the pump is
running. This ensures venting and pressure build-up during
start-up.
Fig. 11 Plugs in the pump sleeve
9.2 Checking the direction of rotation
The motor fan cover has an installation indicator. See fig. 12.
Based on the motor cooling air, it indicates the direction of
rotation of the motor.
Before the motor is started for the first time or if the position of the
indicator has been changed, the indicator function should be
checked, for instance by moving the indicator field with a finger.
To determine whether the direction of rotation is correct or wrong,
compare the indication with the table below.
*To reverse the direction of rotation, switch off the power supply
and interchange any two of the incoming supply wires.
Fig. 12 Installation indicator
The indicator can be placed in various positions on the motor, but
it must not be placed between the cooling fins close to the screws
holding the fan cover.
The correct direction of rotation is also shown by arrows on the
motor fan cover.
10. Maintenance
The internal pump parts are maintenance-free. It is important to
keep the motor clean in order to ensure adequate cooling of the
motor. If the pump is installed in dusty environments, it must be
cleaned and checked regularly. Take the enclosure class of the
motor into account when cleaning.
The motor has maintenance-free, greased-for-life bearings.
10.1 Frost protection
Pumps which are not being used during periods of frost should be
drained to avoid damage.
Remove the priming and drain plugs. See fig. 11.
Do not refit the plugs until the pump is taken into operation again.
10.2 Cleaning
Prior to a long period of inactivity, the pump must be flushed with
clean water to prevent corrosion and deposits in the pump.
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ML 71 and ML 80-based motors (see motor
nameplate) have no phase insulation* and must
therefore be protected against voltage peaks
higher than 650 V (peak value) between the
supply terminals.
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Do not start the pump until it has been primed.
Warning
The system may be under pressure, and the
escaping liquid may be scalding hot. Care must
therefore be taken to ensure that the liquid does
not cause personal injury or damage to other
components.
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The discharge valve must be opened immediately
after start-up of the pump. Otherwise the
temperature of the pumped liquid may become
too high and cause material damage.
TM03 8774 1008
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If the pump is not building up pressure, it may be
necessary to repeat steps 1. to 6.
Priming plug
Drain plug
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The description below applies to three-phase
motors only.
Indicator field Direction of rotation
Black Correct
White/reflecting Wrong*
TM04 0360 1008
Warning
Before starting work on the pump, make sure that
the power supply has been switched off and that
it cannot be accidentally switched on.
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Before start-up after a period of inactivity, the
pump and the suction pipe should be completely
filled with liquid. See section 9.1 Priming.
Indicator field

English (US)
10
11. Service
Before returning the pump to Grundfos for service, the safety
declaration at the end of these instructions must be filled in by
authorized personnel and attached to the pump in a visible
position.
If Grundfos is requested to service the pump, it must be ensured
that the pump is free from substances that can be injurious to
health or toxic. If the pump has been used for such substances,
the pump must be cleaned before it is returned.
If proper cleaning is not possible, all relevant information about
the chemical must be provided.
If the above is not fulfilled, Grundfos can refuse to accept the
pump for service.
Possible costs of returning the pump are paid by the customer.
The safety declaration can be found at the end of these instructions.
12. Technical data
12.1 Enclosure class
• Standard: TEFC (IP55).
12.2 Sound pressure level
The sound pressure level of the pumps is lower than 70 dB(A).
12.3 Ambient temperature
13. Maximum system pressure and permissible liquid temperature
* At liquid temperatures below +32 °F (0 °C), higher motor outputs may be needed due to increased viscosity, for instance if glycol has
been added to the water.
** +248 °F (+120 °C) applies only if the pump has an AQQE shaft seal.
*** CM and CME pumps for liquid temperatures below –4 °F (–20 °C) are available on request. Please contact Grundfos.
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If a pump has been used for a liquid which is
injurious to health or toxic, the pump will be
classified as contaminated.
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When the rubber plug is removed the rating
becomes IP34. This applies to both CM and CME
pumps. The use of a cover does not affect the IP
rating.
Max. ambient temperature Liquid temperature
131 °F (+55 °C) 194 °F (+90 °C)
122 °F (+50 °C) 212 °F (+100 °C)*
113 °F (+45 °C) 230 °F (+110 °C)*
104 °F (+40 °C) 248 °F (+120 °C)*
*Note: Only the stainless-steel variants AISI 304 (EN 1.4301)
and AISI 316 (EN 1.4401) are suitable for pumping liquids with
temperatures above +194 °F (+90 °C).
Material variant Shaft seal Permissible liquid temperature* Maximum system pressure
Cast iron
(EN-GJL-200)
AVBx –4 °F to +104 °F
+105 °F to +194 °F (–20 °C to +40 °C) (+41 °C to +90 °C) 145 psi 87 psi (10 bar) (6 bar)
AQQx –4 °F to +194 °F (–20 °C to +90 °C) 145 psi (10 bar)
Stainless steel
AISI 304 (EN 1.4301)
AVBx –4 °F to +104 °F
+105 °F to +194 °F (–20 °C to +40 °C) (+41 °C to +90 °C) 145 psi 87 psi (10 bar) (6 bar)
AQQx –4 °F to +194 °F
+195 °F to +248 °F (–20 °C*** to +90 °C) (+91 °C to +120 °C**) 232 psi 145 psi (16 bar) (10 bar)
Stainless steel
AISI 316 (EN 1.4401)
AVBx –4 °F to +104 °F
+105 °F to +194 °F (–20 °C to +40 °C (+41 °C to +90 °C) 145 psi 87 psi) (10 bar) (6 bar)
AQQx –4 °F to +194 °F
+195 °F to +248 °F (–20*** °C to +90 °C) (+91 °C to +120 °C**) 232 psi 145 psi (16 bar) (10 bar)