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English (GB)

3

1.3 Notes

The symbols and notes below may appear in 
Grundfos installation and operating instructions, 
safety instructions and service instructions.

2. Installing the product

2.1 Mechanical installation

The float switch is freely suspended from a highly 
flexible, heavy-duty cable and set at the required 
level "On, Off or Alarm". The position of the float 
switch changes with the rise and fall of the water 
level. A micro switch opens and closes the circuit, 
switching a pump on or off or triggering an alarm. 
One float switch is required respectively for each 
switching impulse. It is very important to ensure that 
the float switch can hang freely, does not lie on the 
ground, can operate without interference by shaft 
walls, pipes or fittings etc. and is not directly in the 
liquid flow. The power cable of the float switch must 
be carefully laid along its entire length to prevent any 
risk of mechanical damage. Also ensure that 
moisture cannot penetrate cable ends. See fig. 

1

.

Valid for MS1 Ex only

2.2 Electrical connection

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.

To avoid the risk of the buildup of an 
electrostatic charge, the casing of the float 
switch must be connected to the 
equipment's potential equalisation system 
using the potential equalisation conductor 
in the connection cable.

DANGER

Electric shock

Death or serious personal injury
- Switch off the power supply before 

starting any work on the product. Make 
sure that the power supply cannot be 
accidentally switched on.

- Never work on live wires.
- The float switch must be earthed.
- Ensure that neither water nor moisture 

can enter via the cable ends.

Observe these instructions for 
explosion-proof products.

The electrical connection must be carried 
out by an authorised electrician in 
accordance with local regulations.

For installation in EX-Zones 0 and 1, the 
use of an intrinsically safe electrical circuit 
relay is mandatory.

Connection of the 
float switch

Grey

(1)

Black

(2)

Brown

(3)

Yellow/

green

(MS1 Ex 

only)

See 

fig. 

2

 

in 
appendix

To empty

Isolate

X

X

To ground

Alarm at 
high liquid 
level

See 

fig. 

3

 

in 
appendix

To fill

X

Isolate

X

To ground

Alarm at 
low liquid 
level

Содержание MS1

Страница 1: ...MS1 and MS1 Ex Float switch Installation and operating instructions GRUNDFOS INSTRUCTIONS ...

Страница 2: ... Notes 3 2 Installing the product 3 2 1 Mechanical installation 3 2 2 Electrical connection 3 3 Product introduction 4 4 Servicing the product 4 5 Technical data 4 6 Disposing of the product 4 Read this document and the quick guide before installing the product Installation and operation must comply with local regulations and accepted codes of good practice This appliance must only be installed by...

Страница 3: ...tion 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 To avoid the risk of the buildup of an electrostatic charge the casing of the float switch must be con...

Страница 4: ...arest Grundfos company or service workshop The crossed out wheelie bin symbol on a product means that it must be disposed of separately from household waste When a product marked with this symbol reaches its end of life take it to a collection point designated by the local waste disposal authorities The separate collection and recycling of such products will help protect the environment and human ...

Страница 5: ...Appendix 5 Appendix 1 Fig 1 MS1 or MS1 Ex float switch Fig 2 To empty or alarm at high liquid level Fig 3 To fill or alarm at low liquid level TM07 2281 3018 TM07 2279 3018 TM07 2280 3018 2 1 3 3 2 1 ...

Страница 6: ...agállamainak jogi irányelveit összehangoló tanács alábbi előírásainak IT Dichiarazione di conformità UE Grundfos dichiara sotto la sua esclusiva responsabilità che il prodotto MS1 MS1 Ex al quale si riferisce questa dichiarazione è conforme alle seguenti direttive del Consiglio riguardanti il riavvicinamento delle legislazioni degli Stati membri UE LT ES atitikties deklaracija Mes Grundfos su visa...

Страница 7: ...roduct Testing AG Luppmenstrasse 3 8320 Fehraltorf Switzerland CH Applied harmonized EC Norms Directive 2011 65 EU RoHS Directive 2014 34 EU ATEX Standards used EN 60079 0 12 A11 13 EN 60079 11 12 EN 60079 26 15 Application in intrinsically safe electrical circuits in EX Zone 0 1 and 2 This EU declaration of conformity is only valid when published as part of the Grundfos safety instructions public...

Страница 8: ...ro Tlf 45 87 50 50 50 Telefax 45 87 50 51 51 E mail info_GDK grundfos com www grundfos com DK Estonia GRUNDFOS Pumps Eesti OÜ Peterburi tee 92G 11415 Tallinn Tel 372 606 1690 Fax 372 606 1691 Finland OY GRUNDFOS Pumput AB Trukkikuja 1 FI 01360 Vantaa Phone 358 0 207 889 500 France Pompes GRUNDFOS Distribution S A Parc d Activités de Chesnes 57 rue de Malacombe F 38290 St Quentin Fallavier Lyon Tél...

Страница 9: ...0 1426 sk grundfos com Slovenia GRUNDFOS LJUBLJANA d o o Leskoškova 9e 1122 Ljubljana Phone 386 0 1 568 06 10 Telefax 386 0 1 568 06 19 E mail tehnika si grundfos com South Africa GRUNDFOS PTY LTD Corner Mountjoy and George Allen Roads Wilbart Ext 2 Bedfordview 2008 Phone 27 11 579 4800 Fax 27 11 455 6066 E mail lsmart grundfos com Spain Bombas GRUNDFOS España S A Camino de la Fuentecilla s n E 28...

Страница 10: ...9610 Trademarks displayed in this material including but not limited to Grundfos the Grundfos logo and be think innovate are registered trademarks owned by The Grundfos Group All rights reserved 2018 Grundfos Holding A S all rights reserved ...

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