Grundfos SCALA1 Manuel utilisateur

SCALA1 System

Installation and operating instructions

GRUNDFOS INSTRUCTIONS

SCALA1 System

English (GB)

Installation and operating instructions ..................................4

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

1.3 Target group.................. 5

2. Product introduction ............ 6

2.1 Product description .............. 6

2.2 Pumped liquids ................ 6

3. Mechanical installation ........... 6

3.1 Wall installation ................ 7

3.2 Installing the overflow connection ...... 8

3.3 Connecting the tap water pipe ........ 9

3.4 Connecting the rainwater inlet pipe ..... 9

3.5 Connecting the outlet pipe ..........10

3.6 Installing the float switch ...........10

4. Starting up the product ...........12

4.1 Priming the product ..............12

4.2 Starting up the pump .............12

4.3 Operation ...................13

4.4 Shaft seal run-in................13

5. Control functions ..............13

5.1 Overflow alarm ................13

5.2 Operating panel ................14

5.3 Auto reset ...................15

5.4 Dry-running protection ............16

5.5 Anti-cycling ..................16

5.6 Maximum runtime ...............16

5.7 Performance modes .............17

5.8 Selecting the performance mode.......18

6. Fault finding .................18

6.1 Grundfos Eye SCALA1 ............19

6.2 The pump does not start ...........20

6.3 The pump does not start ...........20

6.4 The pump is not running, and the

indicator light for dry running and water

shortage is on .................20

6.5 The pump starts and stops too frequently ..21

6.6 The pump does not stop ...........21

6.7 Insufficient pump performance ........21

6.8 The pump is not running ...........22

6.9 The pump is not running, and the

indicator light for exceeded maximum

runtime is on .................22

6.10 The pump is not running, and the

indicator light for leakage in the system is

on .......................22

6.11 The pump is not running and Grundfos

Eye is flashing red ..............23

6.12 The pump is running and the motor

shows a red indicator light ..........23

6.13 The pump cuts out during operation .....24

6.14 Electric shock .................24

6.15 Resetting fault indications ..........24

7. Maintenance .................25

7.1 Cleaning the filter ...............25

8. Technical data ................26

8.1 Operating conditions .............26

8.2 Mechanical data................27

8.3 Electrical data .................27

8.4 Dimensions and weights ...........27

9. Disposing of the product ..........28

9.1 Disposing of hazardous or toxic materials ..28

10. Document quality feedback ........28

English (GB)

1. General information

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.

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.

1.3 Target group

These installation and operating instructions are

intended for professional as well as non-professional

users.

English (GB)

2. Product introduction

2.1 Product description

The SCALA1 System is used to manage and

distribute rain. The system is suitable for irrigation,

water flushing of toilets and floor cleaning systems.

The system prioritises the use of rainwater over tap

water. In case of insufficient rainwater in the tank, the

control unit switches to tap water to ensure the

necessary water flow at the tapping points. The

system automatically switches between the rainwater

tank and the tap water tank by means of a three-way

valve installed on the pump inlet port. The water

supplied by the system is not potable.

2.2 Pumped liquids

DANGER

Explosion risk

Death or serious personal injury

‐Do not use the product for flammable

liquids such as diesel oil, petrol or

similar liquids. The product must only

be used for water.

WARNING

Electric shock

Death or serious personal injury

‐Do not use the product for aggressive

liquids. The product must only be used

for water.

WARNING

Toxic material

Death or serious personal injury

‐Do not use the product for toxic liquids.

The product must only be used for

water.

If the water contains sand, gravel or other

debris, there is a risk of pump blockage

and pump damage. Install a filter on the

inlet side or apply a floating strainer to

protect the pump.

The product is suitable for pumping clean, thin, non-

aggressive and non-explosive liquids without solid

particles or fibres.

The product is designed for fresh water with a

maximum chloride content of 300 ppm and a free

chlorine content below 1 ppm.

Examples of liquids:

• clean water

• rainwater.

3. Mechanical installation

WARNING

Electric shock

Death or serious personal injury

‐Switch off the power supply before you

start any work on the product. Make

sure that the power supply cannot be

switched on accidentally.

WARNING

Electric shock

Death or serious personal injury

‐Mount the product horizontally to avoid

condensation in the electrical insulation

inside the control box.

WARNING

Chemical hazard

Death or serious personal injury

‐Before the pump is used for supplying

drinking water, flush the pump

thoroughly with clean water.

WARNING

Biological hazard

Death or serious personal injury

‐Before the pump is used for supplying

drinking water, flush the pump

thoroughly with clean water.

English (GB)

3.1 Wall installation

3 4

79 8

TM085710

Pos. Description

1 Three-way valve

2 SCALA1 System

3 Filter

4 Feed pump (optional)

5 Rainwater tank

6 Inlet filter/float switch

7 Inlet pipe

8 Tank overflow

9 Sewer line

10 Mains water supply

11 Control box

Before installing the product, ensure that the sewage

system is at least 1 metre below where SCALA1

System is to be installed. The following requirements

must also be met:

• The room must have an outlet pipe that is

connected to the sewage system.

• The location must be dry and protected from rain.

• Flat wall, in horizontal position.

• Minimum distance from the ceiling: 50 cm.

We recommend installing a feed pump

with a maximum system pressure of 8 bar

if the distance between the rainwater tank

and SCALA1 System is too long.

English (GB)

3.1.1 Mounting the product

The security screws are essential to

ensure the stability of the system and the

safety of persons.

TM085550

SCALA1 system

Pos. Description

1 Mounting screws for the bracket

2 Security screws

Follow the steps below to mount the SCALA1 system:

1. Install the mounting bracket on the wall.

Make sure it is horizontal using a spirit level, and

mark the positions of the holes.

2. Drill the mounting holes using a D.10 drill bit.

3. Fix the bracket to the wall, making sure that it is

level and securely attached to the wall.

4. Install the SCALA1 system as shown above.

5. Mount the security screws.

6. Place two of the supplied vibration dampers

between the bracket and the wall, and place the

remaining two between the tank and the wall to

reduce the transfer of vibrations to the wall.

3.2 Installing the overflow connection

To install the overflow connection, follow the steps

below:

1. Connect the DN 50 outlet pipe to the overflow

pipe of the system.

2. Make sure that the outlet pipe

slopes sufficiently to guarantee correct drainage.

3. Connect the outlet pipe to the sewage system.

4. If the outlet pipe does not slope sufficiently, install

a pump system.

English (GB)

3.3 Connecting the tap water pipe

When tightening the pipe, make sure the

tap water hose does not turn.

The float switch that regulates the

backflow of the tap water is designed to

operate at a maximum pressure of 4 bar

and a flow rate of more than 10 L/min. If

the mains water pressure exceeds this

value, install a pressure regulator

upstream of the float and add a mesh filter

to protect the pressure regulator from any

debris that could compromise its

operation. Excessive pressure in the pipes

of the tap water network can lead to a leak

or a malfunctioning float switch.

We recommend installing an on/off tap

upstream of the float switch to cut off the

mains water supply in case of breakage or

malfunction so that maintenance can be

carried out safely.

1. Connect the tap water pipe to the 3/4 inch drain

on the right side of the tank.

3.4 Connecting the rainwater inlet pipe

The inlet pipe must have an internal diameter of at

least 25 mm, and it must always slope towards the

tank.

We recommend installing a float switch

fitted with an inlet strainer and a non-return

valve in the rainwater tank.

1. Install the system as close to the rainwater tank

as possible.

a. Never exceed a suction lift of 6 metres for

optimum performance of the pump. The total of

the suction distance and the suction loss

depends on the length of the inlet pipe.

b. The inlet point must always ensure the suction

of clean water. Use a suction kit, and install it

as shown here.

TM079196

Installation of the suction kit

2. Connect the inlet pipe to the connecting piece.

3. Install a feed pump if the maximum pipe length

according to the suction lift is outside the curve.

See the graph below.

English (GB)

[m]

4 8 12 16 20 24 28 32 36 40

TM079195

Maximum inlet pipe length (horizontal axis)

according to the suction lift (vertical axis)

3.5 Connecting the outlet pipe

Install an on/off tap upstream of the

float switch to cut off the mains water

supply in case of breakage or

malfunction so that maintenance can be

carried out safely.

1. Connect the outlet pipe to the 1-inch connector

with the supplied hose as shown below.

2. Fix the pipe to the wall with a suitable bracket.

3.6 Installing the float switch

15 cm

1 2

TM085714

Installing the float switch

Pos. Description

1 Inlet pipe

2 Rainwater tank

3 Strainer

4 Float switch

5 Counterweight

6 Water level

The float switch must be installed in the rainwater

tank. Proceed as follows:

1. Place the float switch as shown in the illustration

above.

2. Adjust the counterweight so that there is a

distance of at least 20 cm between the float switch

and the counterweight.

3. After adjusting the float switch, make sure that the

cable is protected along its entire length:

a. Place the cable in a casing tube.

b. Reconnect the float switch cable at the control

box.

The float switch must change the

contact at least 15 cm before the

inlet strainer fills with air.

English (GB)

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