Kobold NAB User manual

Operating Instructions
for
Level Switch for Liquids
Model: NAB / NEC

NAB/NEC
page 2 NAB/NEC K06/0123
1. Contents
1.Contents ........................................................................................................ 2
2.Note .............................................................................................................. 3
3.Instrument Inspection .................................................................................... 3
4.Regulation Use ............................................................................................. 3
5.Operating Principle ........................................................................................ 4
5.1NAB ..................................................................................................... 4
5.2NEC ..................................................................................................... 4
6.Mechanical Connection ................................................................................. 4
7.Electrical Connection .................................................................................... 5
7.1Connection figure NAB ........................................................................ 5
7.2Connection figure NEC ........................................................................ 5
8.Maintenance ................................................................................................. 6
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.: [phone]
Fax: [phone]
E-Mail: [email protected]
Internet: www.kobold.com

NAB/NEC
NAB/NEC K06/0123 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-machine guidelines.
3. Instrument Inspection
Instruments are inspected before shipping and sent out in perfect condition.
Should damage to a device be visible, we recommend a thorough inspection of
the delivery packaging. In case of damage, please inform your parcel service /
forwarding agent immediately, since they are responsible for damages during
transit.
Scope of delivery:
The standard delivery includes:
 Level Switch model: NAB / NEC
4. Regulation Use
Any use of the Level Switch, model: NAB/NEC, which exceeds the
manufacturer’s specification, may invalidate its warranty. Therefore, any resulting
damage is not the responsibility of the manufacturer. The user assumes all risk
for such usage.

NAB/NEC
page 4 NAB/NEC K06/0123
5. Operating Principle
5.1 NAB
The KOBOLD level switch model NAB is ideally suited for the level monitoring of
liquids and for direct pump control by means of a mechanical switch with very
high switch capacity 20 (8) A at 250 VAC.
The NAB comprises a stable plastic housing made of polypropylene (PP) with
neoprene cable of optional 3 or 10 m of length.
5.2 NEC
The KOBOLD level switches of model NEC have been developed for level
monitoring of liquids and for direct pump control for all industrial applications.
The float is supplied with a mechanical microswitch with very large switching
capacity.
The NEC comprises a stable plastic housing made of polypropylene with a total
of five cavities sealed back-to-back. The instruments are thus practically
unsinkable even when physically damaged.
The level switches are available in following basic designs:
 NEC-930: polypropylene float, with mechanical contact, 5 m Hypalon cable
 NEC-HY930: float Hypalon coated for aggressive media, with mechanical
contact, 5 m Hypalon cable
 NEC-930 N10: polypropylene float, with mechanical contact, 10 m Hypalon
cable
6. Mechanical Connection
Make sure that the maximum allowed operating pressures and
service temperatures of the devices are not exceeded (see section
Fehler! Verweisquelle konnte nicht gefunden werden.. Fehler!
Verweisquelle konnte nicht gefunden werden.).
Take care that the cable-ends are not immersed in water at any time,
because there is a danger of water leakage into the device through
the cable.

NAB/NEC
NAB/NEC K06/0123 page 5
7. Electrical Connection
 Make sure that the supply wires are de-energised.
 Make sure that the voltage values of your system correspond with the voltage
values of the measuring unit. Do not exceed at any time the switching capacity
specified in the technical details.
 Connect the supply wires to the cable of the float switch according to the
desired switching function.
 The cable joint should be protected by an adequate terminal box against touch
and humidity.
7.1 Connection figure NAB
7.2 Connection figure NEC
blue black
El
ectr
i
ca
l
connect
i
on
blue brown blac
k
El
ectr
i
ca
l
connect
i
on

NAB/NEC
page 6 NAB/NEC K06/0123
8. Maintenance
The float switch is almost maintenance-free.
Occasionally the cables should be checked for damages. A float switch with a
damaged cable should be replaced immediately.
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

NAB/NEC
NAB/NEC K06/0123 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

NAB/NEC
page 8 NAB/NEC K06/0123
13. EU Declaration of Conformance
We, KOBOLD Messring GmbH, Hofheim-Ts, Germany, declare under our sole
responsibility that the product:
Level Switch for Liquids model: NAB/NEC
to which this declaration relates is in conformity with the standards noted below:
EN 60730-2-15:2010 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
Also, the following EU Directives are fulfilled:
2014/35/EU Low Voltage Directive
2014/30/EU EMC Directive
2011/65/EU RoHS (category 9)
2015/863/EU Delegated Directive (RoHS III)
Hofheim, 19 Sept. 2019
H. Peters M. Wenzel
General Manager Proxy Holder