Kobold NSM Manuel utilisateur

Operating Instruction

for

Float Switch

Model: NSM

NSM

Page 2 NSM K04/0923

1. Contents

1.Contents ............................................................................. 2

2.Note .................................................................................... 3

3.Instrument Inspection ......................................................... 3

4.Regulation Use ................................................................... 4

5.Operating Principle ............................................................. 4

6.Mechanical Connection ...................................................... 4

7.Electrical Connection .......................................................... 5

8.Maintenance ....................................................................... 5

9.Technical Information ......................................................... 6

10.Order Codes ....................................................................... 6

11.Dimensions ......................................................................... 6

12.Disposal .............................................................................. 7

13.EU Declaration of Conformance ......................................... 8

Manufactured and sold by:

Kobold Messring GmbH

Nordring 22-24

D-65719 Hofheim

Tel.: +49(0)6192-2990

Fax: +49(0)6192-23398

E-Mail: [email protected]

Internet: www.kobold.com

NSM

NSM K04/0923 Page 3

2. Note

Please read these operating instructions before unpacking and putting the unit

into operation. Follow the instructions precisely as described herein.

The instruction manuals on our website www.kobold.com are always for currently

manufactured version of our products. Due to technical changes, the instruction

manuals available online may not always correspond to the product version you

have purchased. If you need an instruction manual that corresponds to the

purchased product version, you can request it from us free of charge by email

([email protected]) in PDF format, specifying the relevant invoice number and

serial number. If you wish, the operating instructions can also be sent to you by

post in paper form against an applicable postage fee.

Operating instructions, data sheet, approvals and further information via the QR

code on the device or via www.kobold.com

The devices are only to be used, maintained and serviced by persons familiar

with these operating instructions and in accordance with local regulations

applying to Health & Safety and prevention of accidents.

When used in machines, the measuring unit should be used only when the

machines fulfil the EC machinery directive.

3. Instrument Inspection

These devices are checked before shipping and sent out in perfect condition.

Should damage to a device be visible, we recommend a thorough inspection of

the delivery packing. In case of damage, please inform your parcel service/

forwarding agent immediately, since they are responsible for damages during

transit.

Scope of delivery:

Standard scope of delivery applies:

 Float switch, model: NSM

NSM

Page 4 NSM K04/0923

4. Regulation Use

These units of type NSM are employed for purposes of monitoring the filling-level

status of liquids. Only such liquids may be measured which are compatible with

the materials used in the construction of these units.

Float switches are usable as switching elements for level control in almost any

situation, where a two-point control is sufficient to solve the problem under

consideration. These devices are easy to install and practically maintenance-free.

Float switches represent an inexpensive solution while offering high reliability at

the same time.

5. Operating Principle

The float switch consists of a body with built-in micro-switch. The supplied contact

is a change-over type (SPDT), which can be used selectively as a N.O. or N.C.

contact.

The contact switches when exceeding or falling short of the horizontal float

position. Setting switch point is carried out through on-site assembly of the switch

at the desired position by cable-clamping. When top mounting, the switching point

is determined by means of ballast cable weights.

6. Mechanical Connection

The float switch cable is fastened centrally between the lower and upper levels.

The switching angle of the switch is approx. 45°. Thus, the difference in level is

about 1.4 times that of free cable length.

Example: Free cable-length 10 cm

Level difference approx. 14cm

Attention: The bending radius of the cable is 15-times of the cable diameter.

Neoprene cable: approx. 11 cm

The cable should not be bound with strap-hardened cable binder and not in a

vertical direction, if possible. The use of bending protection trumpets is

recommended.

NSM

NSM K04/0923 Page 5

7. Electrical Connection

The maximum electrical load of the switch is indicated on the instrument sticker.

Wiring

Blue

Brown

Black

Green-yellow

N.O

N.C.

Yellow-green: Ground

Blue-brown: N.O. with increasing level

Brown-black: N.C. with increasing level

Note! Water can penetrate the cut-end jacketing of the cable and

seep along the line into the switch. Do not allow the liquid to rise

above this end. The wiring should be connected either in a dry area

or in a junction-box, satisfying the safety class IP65 requirement (or

better). The use of a ground-fault-interrupting circuit breaker is

recommended.

After connecting desired external devices to the limit-contact, the device is ready

for use.

8. Maintenance

Providing that, the medium to be measured is not contaminated, the NSM unit is

maintenance-free.

NSM

Page 6 NSM K04/0923

9. Technical Information

Operating instructions, data sheet, approvals and further information via the QR

code on the device or via www.kobold.com

10. Order Codes

Operating instructions, data sheet, approvals and further information via the QR

code on the device or via www.kobold.com

11. Dimensions

Operating instructions, data sheet, approvals and further information via the QR

code on the device or via www.kobold.com

NSM

NSM K04/0923 Page 7

12. Disposal

Note!

 Avoid environmental damage caused by media-contaminated parts

 Dispose of the device and packaging in an environmentally friendly

manner

 Comply with applicable national and international disposal regulations and

environmental regulations.

Batteries

Batteries containing pollutants are marked with a sign consisting of a crossed-out

garbage can and the chemical symbol (Cd, Hg, Li or Pb) of the heavy metal that

is decisive for the classification as containing pollutants:

Cd1 Hg2 Pb3 Li4

1. „Cd" stands for cadmium

2. „Hg" stands for mercury

3. „Pb" stands for lead

4. „Li" stands for lithium

Electrical and electronic equipment

NSM

Page 8 NSM K04/0923

13. EU Declaration of Conformance

We, KOBOLD Messring GmbH, Nordring 22-24, 65719 Hofheim, Germany,

declare under our sole responsibility that the product:

Float Switch Type: NSM...

to which this declaration relates is in conformity with the following EU directives

stated below:

2014/35/EU Low Voltage Directive

2011/65/EU RoHS

Also, the following standards are fulfilled:

EN 60730-1:2012 Automatic electrical controls for household and similar use -

Part 1: General requirements

EN 60730-2-15:2011 Automatic electrical controls for household and similar use -

Part 2-15: Particular requirements for automatic electrical air flow, water flow and

water level sensing controls

Hofheim, 19 Sept 2023

H. Volz J. Burke

General Manager Compliance Manager

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