Adjusting The Level Contacts - Bühler technologies Nivotemp 61-0-WW Serie Guía Rápida

Nivotemp 61-0-WW

4.4 Adjusting the level contacts

The measurement contacts are mounted on a perforated rail
inside the protective tube. These are arranged per order spe-
cifications but can be moved if necessary.
NOTICE
The water alarm contact is fixed to a specific measurement
and cannot be adjusted!
Depending on the model, the perforated rail will also have
electronic assemblies. These are positioned so they do not
limit the setting range of the contacts. Please be sure not to
damage the assemblies during installation or removal.
For devices with 230 V mains voltage:
DANGER
Electrical voltage
Electrocution hazard.
a) Disconnect the device from power supply.
b) Make sure that the equipment cannot be reconnected to
mains unintentionally.
c) The device must be opened by trained staff only.
d) Regard correct mains voltage.
WARNING
Fluids or gasses discharged at high pressure harmful to
the environment or health
a) Depressurise the system/component prior to installation.
b) Drain the system/component in accordance with envir-
onmental regulations. Wear suitable protective clothing.
• Disconnect the voltage supply.
• Loosen plug connections and connections!
• Unscrew the plug base.
• Carefully pull the perforated rail with contacts out the
top.
NOTICE
On versions with earth wire, this is run as a loop and soldered
to the protective tube from the inside in the insertion direc-
tion. To prevent breaking off the earth wire it should not be
pulled all the way out.
• Mark the original contact position.
• Lock the contacts in place in the desired positions. Please
note the minimum spacing!
We recommend marking the original contact position for
checking purposes. The contacts can then be locked into place
in the desired position on the perforated rail. The contacts are
installed as NO, NC or changeover based on the order. Since
these are bistable contacts, the contact function of the NO or
NC contact can later be changed. To do so, simply turn the
contacts 180°.
The contact symbols for NO and NC are marked on the hous-
ing. Below the respective symbol you will also see an arrow.
The arrow, which points up when installed, indicates the re-
spective contact function (see drawing).
BX100007 ◦ 05/2022
NO contact function
with rising level
i.e.
NC contact function
with falling level
The contact logic assumes the level switch is installed in an
empty tank, i.e. it is only in the operating position once filled.
After positioning the contacts, slide the perforated rail back
into the protective tube. Please route the additional cable
lengths required to move the contacts as a loop and insert
along with the perforated rail.
If the loop for the earth lead was removed from the protective
tube, first insert this lead again, then slide in the perforated
rail.
Unscrew the plug base
NOTICE
Ensure the seals are positioned correctly. Replace defective
seals immediately!
5 Operation and control
NOTICE
The device must not be operated beyond its specifications.
6 Maintenance
Always observe the applicable safety- and operating regula-
tions when performing any type of maintenance. Please refer
to the original operator's manual on the included CD or online
at www.buehler-technologies.com for maintenance informa-
tion.
7 Service and Repair
Please refer to the original operator's manual on the included
CD or online at www.buehler-technologies.com for a detailed
description of the unit including information on
troubleshooting and repair.
NC contact function
with rising level
i.e.
NO contact function
with falling level
Bühler Technologies GmbH 7