Grundfos CMV Series User manual

CMV
Installation and operating instructions
GRUNDFOS INSTRUCTIONS
Installation and operating instructions
http://net.grundfos.com/qr/i/97907165
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English (GB)
2
English (GB) Installation and operating instructions
Original installation and operating instructions
These installation and operating instructions
describe Grundfos CM pumps.
Sections 1-4 give the information necessary to be
able to unpack, install and start up the product in a
safe way.
Sections 5-10 give important information about the
product, as well as information on service, fault
finding and disposal of the product.
CONTENTS
Page 1. Symbols used in this document
1.1 Warnings against hazards involving
risk of death or personal injury
The text accompanying the three hazard symbols
DANGER, WARNING and CAUTION is structured in
the following way:
1. Symbols used in this document 2
1.1 Warnings against hazards involving risk of
death or personal injury 2
1.2 Other important notes 3
2. Receiving the product 3
3. Installing the product 3
3.1 Mechanical installation 3
3.2 Pipes 4
3.3 Avoiding condensation in the motor 5
3.4 Electrical connection 5
4. Starting up the product 6
4.1 Non-self-priming pumps 6
4.2 Checking the direction of rotation 7
5. Product introduction 7
5.1 Applications 7
5.2 Identification 7
6. Maintaining the product 8
6.1 Contaminated products 9
6.2 Service documentation 9
7. Taking the product out of operation 9
7.1 Cleaning 9
7.2 Frost protection 9
7.3 Taking the product permanently out of
operation 9
8. Fault finding the product 10
9. Technical data 12
9.1 Enclosure class 12
9.2 Sound pressure level 12
9.3 Ambient temperature 12
9.4 Maximum system pressure and
permissible liquid temperature 12
9.5 Minimum inlet pressure 12
9.6 Maximum inlet pressure 12
10. Disposal 12
Prior to installation, read this document.
Installation and operation must comply
with local regulations and accepted codes
of good practice.
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.
DANGER
Indicates a hazardous situation which, if
not avoided, will result in death or serious
personal injury.
WARNING
Indicates a hazardous situation which, if
not avoided, could result in death or
serious personal injury.
CAUTION
Indicates a hazardous situation which, if
not avoided, could result in minor or
moderate personal injury.
SIGNAL WORD
Description of hazard
Consequence of ignoring the warning.
- Action to avoid the hazard.

English (GB)
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1.2 Other important notes
2. Receiving the product
The weight of the product is stated on the packaging.
The pumps are delivered from factory in a packaging
specially designed for manual transport or transport
by forklift truck or a similar vehicle.
3. Installing the product
3.1 Mechanical installation
Before installing the pump, check that the pump type
and parts are as ordered.
The pump must be installed with the motor shaft
vertical. It must be mounted on a plane surface and
secured by anchor bolts. Tighten each of the four
bolts to a torque of 10 Nm.
The pump must be installed so that the inlet pipe is
as short and the suction lift as small as possible.
The pump must be sited in a well-ventilated but
frost-free position. See section 7.2 Frost protection.
The pump may be sited outdoors, but it must be
protected from the elements by means of a suitable
cover.
The pump must be installed with easy access for
inspection, maintenance and service.
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.
CAUTION
Back injury
Minor or moderate personal injury
- Use lifting equipment which is approved
for the weight of the product.
- Use a lifting method suitable for the
weight of the product.
- Do not lift the product by lifting it in the
packaging inlay.
- Wear personal protective equipment.
CAUTION
Crushing of limbs
Minor or moderate personal injury
- Avoid insecure stacking of the product.
CAUTION
Hot or cold surface
Minor or moderate personal injury
- Make sure that no one can accidentally
come into contact with hot or cold
surfaces.

English (GB)
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3.2 Pipes
We recommend that you fit isolating valves on either
side of the pump. It is thus not necessary to drain the
system if the pump needs service. If the pump is
installed above the liquid level, a non-return valve
must be fitted in the inlet pipe below the liquid level.
The pump must not be stressed by the pipes.
The pipes 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 according to the design
requirements given in EN ISO 13480-3:2012.
Tolerances must comply with EN ISO 13920:1996,
class C.
Install the pipes so that air pockets are avoided,
especially on the inlet side of the pump. See fig. 1.
Fig. 1 Pipes
3.2.1 Pipe connection (non-self-priming pumps)
Fig. 2 Inlet and outlet ports
Torques
TM01 6710 3299
Pos. Description Function
1 Expansion joint
Reduces noise and
absorbs vibrations and
expansion.
2 Isolating valve Enables easy service of
the pump.
3 Pipe support
Supports pipe and
absorbs distortion and
strain.
123
Take care not to damage the pump when
connecting the inlet and outlet pipes.
Torque: 50-60 Nm. The stated torque must
not be exceeded.
TM05 0530 1111
Inlet and outlet ports Torque
[Nm]
1" 50-60
1 1/4" 50-60
Outlet port
Inlet port

English (GB)
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3.3 Avoiding condensation in the motor
If the liquid temperature falls below the ambient
temperature, condensation may form in the motor
during standstill. Condensation can occur in moist
surroundings or areas with high humidity.
In such cases, use a motor suitable for condensing
environments such as an IPX5 motor available from
Grundfos.
Alternatively, open the bottom drain hole in the motor
flange by removing the plug. See fig. 3. This reduces
the motor enclosure class to IPX5.
Fig. 3 Motor drain plug
The open drain hole helps prevent condensation in
the motor as it makes the motor self-venting and
allows water and humid air to escape.
3.4 Electrical connection
Carry out the electrical connection according to local
regulations.
Check that the supply voltage and frequency
correspond to the values stated on the nameplate.
3.4.1 Power supply cable
In order to comply with the EN 60335-1 standard, the
power supply cable must as a minimum be rated for
an operating temperature of 105 °C (221 °F).
3.4.2 Motor protection
Single-phase motors, 1 x 115/230 V, 60 Hz
These motors 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 to maximum
1.15 x I1/1.
Other single-phase motors
These motors have built-in current- and
temperature-dependent motor protection in
accordance with IEC 60034-11 and require no further
motor protection. The motor protection is of the TP
211 type which reacts to both slow- and quick-rising
temperatures. The motor protection is automatically
reset.
Three-phase motors up to 3 kW
These motors must be connected to a
motor-protective circuit breaker which can be
manually reset.
Set the motor-protective circuit breaker to maximum
1.15 times full-load current.
TM06 9767 3317
Pos. Description
1 Motor drain plug
1
DANGER
Electric shock
Death or serious personal injury
- Before starting any work on the product,
make sure that the power supply has
been switched off and that it cannot be
accidentally switched on.
- The pump must be connected to an
external all-pole main switch according
to local regulations.
- The product must be earthed and
protected against indirect contact in
accordance with local regulations.
- Wires connected to supply terminals,
must be separated from each other and
from the supply by reinforced insulation.

English (GB)
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3.4.3 Connection of wires in the terminal box
Carry out the electrical connection as shown in the
diagram inside the terminal box cover.
Fig. 4 Wiring diagram
3.4.4 Frequency converter operation
You can connect three-phase motors 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.
* MG 71- and MG 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.
4. Starting up the product
4.1 Non-self-priming pumps
4.1.1 Liquid filling
1. Close the isolating valve on the outlet side of the
pump.
2. Open the isolating valve in the inlet pipe
completely before starting the pump.
3. Remove the filling plug. See fig. 5.
4. Fill the pump housing and the inlet pipe
completely with liquid until a steady stream of
liquid runs out of the filling hole.
5. Fit and tighten the filling plug.
6. Start the pump and slowly open the outlet
isolating valve while the pump is running. This
ensures venting and pressure buildup during
startup.
Fig. 5 Position of filling hole and drain hole
TM05 0529 1111
MG 71- and MG 80-based motors have no
phase insulation* and must therefore be
protected against voltage peaks higher
than 650 V (peak value) between the
supply terminals.
If there is a risk of condensation in the
motor, remove the motor drain plug before
startup and keep the drain hole open
during operation. See fig. 3.
Do not start the pump until it has been
filled with liquid.
CAUTION
Hot or cold liquid
Minor or moderate personal injury
- Wear personal protective equipment.
- Pay attention to the direction of the vent
hole when you fill the pump with liquid
and vent it.
- Make sure that no persons are hurt by
the escaping liquid.
Pay attention to the direction of the vent
hole during liquid filling and venting. Make
sure that the escaping liquid does not
cause damage to the motor or other
components.
The outlet isolating valve must be opened
immediately after startup of the pump.
Otherwise, the temperature of the pumped
liquid may become too high and cause
damage to the equipment.
TM05 0530 1111
If it is difficult for the pump to build up
pressure, it may be necessary to repeat
steps 1to 6.
Filling plug
Drain plug

English (GB)
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4.2 Checking the direction of rotation
The description below applies to three-phase motors
only.
The motor fan cover has an installation indicator.
See fig. 6. Based on the motor cooling air, it
indicates the direction of rotation of the motor.
Before you start the motor for the first time or if the
position of the installation indicator has been
changed, check that the installation indicator is
working properly 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. 6 Installation indicator
You can place the indicator in various positions on
the motor, but do not place it between the cooling
fins close to the screws that hold the fan cover.
The correct direction of rotation is also shown by
arrows on the motor fan cover.
5. Product introduction
5.1 Applications
The pumps are vertical, multistage centrifugal pumps
designed for pumping of clean, thin and
non-flammable liquids, not containing solid particles
or fibres that may attack the pump mechanically or
chemically.
5.2 Identification
5.2.1 Nameplates for the pump
The pump 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. 1on page 13.
5.2.2 Nameplate with approval marks
The data and information on the pump nameplate
are described in the table below. See the nameplate
in fig. 2on page 13.
Indicator field Direction of rotation
Black Correct
White/reflecting Wrong*
TM04 0360 1008
Indicator field
Pos. Description
1 Pump type
2 Pump model
3 Maximum ambient temperature
4 Temperature class
5 Minimum efficiency index
6 Maximum system pressure
7 Maximum liquid temperature
8 Hydraulic efficiency at best efficiency point
9 Insulation class
10 Motor protection
11 Rated flow
12 Head at rated flow
13 Maximum head
Pos. Description
1CEmark
2 EAC mark
3 PSE mark
4 cULus mark
5ULmark
6 cURus mark
7 Company name and address
8 Country of manufacture

English (GB)
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5.2.3 Nameplate for the motor
The motor name plate is positioned on the motor
cooling fins.
The data and information on the motor nameplate
are described in the table below. See the nameplate
in fig. 3on page 13.
6. Maintaining the product
The internal pump parts are maintenance-free. You
must keep the motor clean in order to ensure
adequate cooling of the motor. If the pump is
installed in dusty environments, clean the pump
regularly. Take the enclosure class of the motor into
account when cleaning.
The motor has maintenance-free, greased-for-life
bearings.
Pos. Description
1 Capacitor size and voltage
2 50 Hz motor efficiency at rated work point
3 50 Hz power factor
4 50 Hz output power in kW
5 Frequency
6 Number of phases
7 50 Hz output power in hp
8 50 Hz maximum current
9 50 Hz full-load current
10 50 Hz rated voltage
11 Motor type
12 50 Hz rated speed
13 Frequency
14 60 Hz output power in kW
15 NEMA enclosure class
16 60 Hz output power in hp
17 60 Hz power factor
18 60 Hz motor efficiency at rated work point
19 Part number
20 Factory code
21 Production date (year and week)
22 Country of origin
23 60 Hz rated voltage
24 60 Hz full-load current
25 60 Hz maximum current
26 60 Hz rated speed
27 IEC duty cycle
28 Number of poles
29 IEC enclosure class
30 Insulation class
31 NEMA enclosure type
32 Motor duty class
33 Maximum ambient temperature
34 NEMA locked-rotor code
35 NEMA design class
37 CC122B mark
38 CE mark
39 cURus mark
DANGER
Electric shock
Death or serious personal injury
- Before starting any work on the product,
make sure that the power supply has
been switched off and that it cannot be
accidentally switched on.
WARNING
Corrosive liquids
Death or serious personal injury
- Wear personal protective equipment.
WARNING
Toxic liquids
Death or serious personal injury
- Wear personal protective equipment.
CAUTION
Hot or cold liquid
Minor or moderate personal injury
- Wear personal protective equipment.
CAUTION
Back injury
Minor or moderate personal injury
- Use lifting equipment which is approved
for the weight of the product.
- Use a lifting method suitable for the
weight of the product.
- Wear personal protective equipment.
Before startup after a period of inactivity,
the pump and the inlet pipe must be
completely filled with liquid. See section
4. Starting up the product.

English (GB)
9
6.1 Contaminated products
The product will be classified as contaminated if it
has been used for a liquid which is injurious to health
or toxic.
If you request Grundfos to service the pump, the
safety declaration at the end of these instructions
must be filled in by authorised persons and attached
to the pump in a visible position before returning it
for service.
Clean the pump in the best possible way before you
return it.
If proper cleaning is not possible, all relevant
information about the pumped liquid must be
provided.
If the above is not fulfilled, Grundfos can refuse to
accept the pump for service.
Costs of returning the pump are to be paid by the
customer.
The safety declaration can be found at the end of
these instructions (only in English).
6.2 Service documentation
Service documentation is available in Grundfos
Product Center
(http://product-selection.grundfos.com/).
If you have any questions, please contact the
nearest Grundfos company or service workshop.
7. Taking the product out of operation
7.1 Cleaning
Prior to a long period of inactivity, flush the pump
with clean water to prevent corrosion and deposits in
the pump.
Use acetic acid to remove possible lime deposits
from the pump.
7.2 Frost protection
Pumps which are not being used during periods of
frost must be drained to avoid damage.
Remove the filling and drain plugs from the pump.
See fig. 5.
Do not refit the plugs until the pump is taken into
operation again.
7.3 Taking the product permanently out of
operation
Observe the following if the pump is to be
permanently taken out of operation and removed
from the pipe system.
CAUTION
Biological hazard
Minor or moderate personal injury
- Flush the product thoroughly with clean
water and rinse the product parts in
water after dismantling
WARNING
Corrosive liquids
Death or serious personal injury
- Wear personal protective equipment.
WARNING
Toxic liquids
Death or serious personal injury
- Wear personal protective equipment.
CAUTION
Hot or cold liquid
Minor or moderate personal injury
- Wear personal protective equipment.
CAUTION
Back injury
Minor or moderate personal injury
- Use lifting equipment which is approved
for the weight of the product.
- Use a lifting method suitable for the
weight of the product.
- Wear personal protective equipment.

English (GB)
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8. Fault finding the product
DANGER
Electric shock
Death or serious personal injury
- Before starting any work on the product,
make sure that the power supply has
been switched off and that it cannot be
accidentally switched on.
WARNING
Corrosive liquids
Death or serious personal injury
- Wear personal protective equipment.
WARNING
Toxic liquids
Death or serious personal injury
- Wear personal protective equipment.
CAUTION
Hot or cold liquid
Minor or moderate personal injury
- Wear personal protective equipment.
Fault Cause Remedy
1. The pump does not run. a) Supply failure. Switch on the switch.
Check cables and cable connections
for defects and loose connections.
b) The motor protection has
tripped. See 2 a), b), c), d), e).
c) The control-current circuit is
defective.
Repair or replace the control-current
circuit.
2. The motor-protective circuit
breaker has tripped. It trips
immediately when the
power supply is switched
on.
a) Contacts of the
motor-protective circuit
breaker or magnet coil are
defective.
Replace the contacts of the
motor-protective circuit breaker, the
magnet coil or the entire
motor-protective circuit breaker.
b) A cable connection is loose or
faulty.
Check cables and cable connections
for defects, and replace the fuses.
c) The motor winding is
defective. Repair or replace the motor.
d) The pump is mechanically
blocked.
Switch off the power supply, and
clean or repair the pump.
e) The setting of the
motor-protective circuit
breaker is too low.
Set the motor-protective circuit
breaker according to the rated
current of the motor (I1/1).
See the nameplate.
3. The motor-protective circuit
breaker trips occasionally.
a) The setting of the
motor-protective circuit
breaker is too low.
See 2 e).
b) Periodic supply fault. See 2 b).
c) Periodically low voltage. Check cables and cable connections
for defects and loose connections.
Check that the power supply cable of
the pump is correctly sized.
4. The motor-protective circuit
breaker has not tripped, but
the pump is inadvertently
out of operation.
a) See 1 a), b), c) and 2 d).
5. The pump performance is
unstable.
a) The pump inlet pressure is too
low. Check for proper inlet conditions.
b) The inlet pipe is partly blocked
by impurities. Remove and clean the inlet pipe.
c) Leakage in the inlet pipe. Remove and repair the inlet pipe.
d) Air in the inlet pipe or pump. Vent the inlet pipe or pump.
Check for proper inlet conditions.