Grundfos CMV Series Bedienungsanleitung

CMV

Installation and operating instructions

GRUNDFOS INSTRUCTIONS

Installation and operating instructions

http://net.grundfos.com/qr/i/97907165

Quick Guide

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http://waterheatertimer.org/Water-heater-recirculation-system.html

English (GB)

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)

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)

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)

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

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)

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)

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)

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)

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)

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.

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