Grundfos CM-L Series Bedienungsanleitung

CM-L

Installation and operating instructions

GRUNDFOS INSTRUCTIONS

Other languages

http://net.grundfos.com/qr/i/99298152

English (GB)

English (GB) Installation and operating instructions

Original installation and operating instructions

These installation and operating instructions

describe Grundfos CM-L.

Sections 1-5 give the information necessary to be

able to unpack, install and start up the product in a

safe way.

Sections 6-11 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 Hazard statements

The symbols and hazard statements below may

appear in Grundfos installation and operating

instructions, safety instructions and service

instructions.

The hazard statements are structured in the

following way:

1. Symbols used in this document 2

1.1 Hazard statements 2

1.2 Notes 3

2. Receiving the product 3

3. Installing the product 3

3.1 Mechanical installation 3

3.2 Installation of the pump 4

3.3 Pipes 4

3.4 Alternative connection positions 4

3.5 Terminal box positions 5

3.6 Electrical connection 5

4. Starting up the product 6

4.1 Liquid filling 6

5. Handling and storing the product 7

5.1 Lifting the product 7

6. Product introduction 7

6.1 Applications 7

6.2 Pumped liquids 7

6.3 Glycol 7

6.4 Identification 8

7. Maintaining the product 9

7.1 Service documentation 9

8. Taking the product out of operation 9

8.1 Cleaning 9

8.2 Frost protection 9

8.3 Taking the product permanently out of

operation 9

9. Fault finding the product 10

10. Technical data 12

10.1 Enclosure class 12

10.2 Sound pressure level 12

10.3 Ambient temperature 12

10.4 Minimum inlet pressure 12

10.5 Maximum inlet pressure 12

11. Disposal 12

Read this document before installing the

product. Installation and operation must

comply with local regulations and accepted

codes of good practice.

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.

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 Notes

The symbols and notes below may appear in

Grundfos installation and operating instructions,

safety instructions and service instructions.

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.

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.

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.

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.

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 Installation of the pump

Install the pump on a plane surface using the

mounting holes in the motor base plate and a

minimum of four bolts. Tighten each of the four bolts

to a torque of 10 Nm.

Install the pump so that air pockets are avoided in

the pump housing and pipes.

Figure 1and the table below show the permissible

pump positions.

Fig. 1 Pump position

●Mounting in this position is allowed.

❍Mounting in this position is allowed if the terminal

box is set to an angle of 45 ° pointing upwards.

Install the pump so that inspection, maintenance and

service can easily be performed.

Install the pump in a well-ventilated location.

3.3 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.

Install the pipes so that air pockets are avoided,

especially on the inlet side of the pump. See fig. 2.

Fig. 2 Pipes

3.3.1 Pipe connection

Fig. 3 Inlet and outlet ports

3.4 Alternative connection positions

The pump is available with various connection

positions on special request. See fig. 4.

Fig. 4 Alternative connection positions

TM06 9531 0919

Pump position CM-L

4●

7❍

Floor

TM04 0338 0608

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.

The inlet and outlet pipes must be

supported so that stress on the pump inlet

and outlet connections is avoided.

TM06 9532 2517TM06 9533 2517

Outlet port

Inlet port

English (GB)

3.5 Terminal box positions

At the bottom close to the pump housing, the stator

housing has two drain holes, 5 x 10 mm, to enable

condensed water to escape. The drain holes must

point downwards. See the arrows in fig. 5. Do not

consider the vent holes in the stator housing as drain

holes.

The possible terminal box positions are shown in fig.

5. The positions apply to mounting in both vertical

and horizontal pipes.

Fig. 5 Terminal box positions

Fig. 6 Standard position

3.5.1 Changing the terminal box position

Change the terminal box position as follows:

1. Remove the four screws holding the pump head.

2. Turn the pump head to the desired position.

3. Refit the four screws.

Do not start the pump until the system has been filled

with liquid and vented. Furthermore, the required

minimum inlet pressure must be available at the

pump inlet. See section 10.4 Minimum inlet

pressure.

To change the nameplate position, ease the outer

edge of the nameplate at the cutout with a

screwdriver, turn the nameplate to the new position,

and push it into place.

3.6 Electrical connection

The electrical connection must be carried out

according to local regulations.

Check that the supply voltage and frequency

correspond to the values stated on the nameplate.

You can use earthing or neutralisation for protection

against indirect contact. You can use a current- or

voltage-operated earth-leakage circuit breaker as

extra protection.

3.6.1 Connections in the standard module

Connect the pump to the power supply via an

external contactor.

Carry out the electrical connection as shown in the

diagram inside the terminal box cover.

3.6.2 Frequency converter operation

CM-L pumps cannot be used with an external

frequency converter.

TM06 9534 2517

Only turn the terminal box to the positions

in fig. 5.

TM06 9535 2517

WARNING

Pressurised system

Death or serious personal injury

- Before dismantling the pump, drain the

system or close the isolating valve on

either side of the pump. The pumped

liquid may be scalding hot and under

high pressure.

When the terminal box position has been

changed, turn the nameplate on the end of

the motor so that the cutout points

downwards. This allows water from a

possible venting to escape.

DANGER

Electric shock

Death or serious personal injury

- Do not make any connections in the

terminal box unless you have switched

off the power supply.

- Connect the pump to earth.

- Connect the pump to an external main

switch with a minimum contact gap of 3

mm in all poles.

DANGER

Electric shock

Death or serious personal injury

- It must be possible to lock the main

switch in the off position. Type and

requirements as specified in EN

60204-1, 5.3.2.

English (GB)

4. Starting up the product

Do not start the pump until you have filled the system

with liquid and vented it. Furthermore, the required

minimum inlet pressure must be available at the

pump inlet. See section 10.4 Minimum inlet

pressure.

Fig. 7 Loosening the inspection screw

4.1 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. 8.

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. 8 Position of filling hole and drain hole

Do not start the pump until it has been

filled with liquid. See section 4.1 Liquid

filling.

CAUTION

Pressurised system

Minor or moderate personal injury

- If the inspection screw is to be

loosened, make sure that the escaping,

scalding hot liquid does not cause

personal injury or damage to

components.

TM06 9536 2517

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 when you fill the pump with liquid and

vent it. Make sure that the escaping liquid

does not cause damage to the motor or

other components.

Inspection screw

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.

TM06 9618 2517

If it is difficult for the pump to build up

pressure, it may be necessary to repeat

steps 1to 6.

Drain hole

Filling hole

English (GB)

5. Handling and storing the product

5.1 Lifting the product

Install the eye bolts supplied with the pump and

attach correct lifting equipment to these when lifting

the pump. See fig. 9.

Fig. 9 Correct lifting of the pump

6. Product introduction

The pumps are horizontal, multistage centrifugal

pumps with canned rotor.

The pumps are available with stainless steel

hydraulics as standard. Cast-iron hydraulics are

available as an option.

Terminal box modules

CM-L pumps are fitted with a standard module in the

terminal box.

6.1 Applications

CM-L pumps are designed for applications where

leakage cannot be accepted, such as:

Delicate temperature control

• Cooling of equipment in server rooms

• cooling of medical and laboratory equipment

• cooling of industrial equipment like laser welders

and injection moulding tools.

Temperature control units where maintenance is

inconvenient

• Cooling of solar panels in remote areas

• cooling of wind turbines.

6.2 Pumped liquids

The pumps are suitable for pumping clean, thin,

non-aggressive and non-explosive liquids, not

containing solid particles, fibres or mineral oil.

If the pump is installed in a heating system, the water

must meet the requirements of accepted standards

on water quality in heating systems, for example the

German standard VDI 2035.

In domestic hot-water systems, we recommend that

you use the pumps only for water with a degree of

hardness lower than approx. 14 °dH. For water with

a higher degree of hardness, we recommend a

direct-coupled TP pump.

Liquid temperature, see section 10. Technical data.

6.3 Glycol

The pumps can be used for pumping water-glycol

mixtures up to 50 %.

The maximum viscosity of a 50 % glycol mixture at

-10 °C is approx. 32 cSt.

To prevent the glycol mixture from degrading, avoid

temperatures exceeding the rated liquid temperature

and minimise the operating time at high

temperatures.

It is important to clean and flush the system before

adding the glycol mixture.

To prevent corrosion or precipitation, check that the

glycol mixture is as specified by the glycol supplier

and maintain it regularly. If further dilution of the

supplied glycol is required, follow the glycol

supplier's instructions.

CAUTION

Crushing of feet

Minor or moderate personal injury

- Use safety shoes when handling the

pump.

Observe local regulations setting limits for

manual lifting or handling.

TM06 9537 2517

Do not lift the pump head by the control

box.

WARNING

Flammable material

Death or serious personal injury

- Do not use the pump for flammable

liquids, such as diesel oil and petrol.

When pumping glycol mixtures, the pump

performance will be reduced.

Consult Grundfos Product Center on

www.grundfos.com for further details.

DEX-COOL®glycol may damage the

pump.

English (GB)

6.4 Identification

6.4.1 Nameplates for the pump

The pump nameplates are positioned on the terminal

box.

6.4.2 Nameplate with pump data

The data and information on the pump nameplate

are described in the table below. See the nameplate

in fig. 1on page 13.

6.4.3 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.

6.4.4 Nameplate for the motor

The motor nameplate is positioned on the end of the

motor.

The data and information on the motor nameplate

are described in the table below. See the nameplate

in fig. 3on page 13.

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 cURus mark

3 Company name and address

4 Country of manufacture

Pos. Description

1 Pump and motor type

2 Product number

3 Model designation

4 Temperature class

5Production code (country of manufacture,

year and week)

6 Rated speed at 50 Hz

7 Rated speed at 60 Hz

8Number of phases, rated voltage and

frequency

9 Full load current (50 Hz)

10 Full load current (60 Hz)

11 Rated power output at 50 Hz [W]

12 Rated power output at 60 Hz [W]

13 Maximum pressure [Mpa]

14 Enclosure class

15 Direction of rotation

English (GB)

7. Maintaining the product

The pump is maintenance-free, as it does not have

mechanical ball bearings or a shaft seal. This means

that unplanned downtime is minimised and difficult

servicing is avoided.

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 bearings.

7.1 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.

8. Taking the product out of operation

8.1 Cleaning

Before 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.

8.2 Frost protection

Pumps which are not being used during periods of

frost must be drained to avoid damage.

1. Remove the filling and drain plugs from the

pump. See fig. 8.

2. Remove the inspection screw from the motor.

See fig. 7.

3. Let the pump drain.

4. Re-install the inspection screw.

Do not refit the plugs until the pump is taken into

operation again.

8.3 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.

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.

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)

9. 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.

Replace the fuse.

Check cables and cable connections

for defects and loose connections.

b) 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 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) 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 pump does not run. a) The rotor is blocked. Switch off the power supply, and

clean or repair the pump.

4. 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.

5. The motor-protective circuit

breaker has not tripped, but

the pump is inadvertently

out of operation.

a) See 1. a, c and 2. d.

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