Safety Instructions; Safety Instuctions / Function Test / Security Seals - NZR WZ FW 662 Kurzanleitung

Safety instructions

The integrator is manufactured and tested according to EN 61010 safety controls
for measuring units and has left the factory in perfect safety technical condition. To
maintain this status and to guarantee safe operation of the integrator, the user must
observe the instructions contained in this document. When opening covers or removing
parts, parts under power can be accessed. Further connection terminals can be under
power. All repair and maintenance work may only be implemented by a trained and an
authorized specialist. If the housings and/or the connecting cable show any damage the
integrator unit should be disconnected and secured against accidentally reset up – put in
operation. Generally avoid an installation situation with an above average accumulation
of heat. An above average heat buildup affects substantial the lifetime of the electronic
components.
Heat meters are measuring devices and are to be handled with care. To protect the unit
against damage and contamination, the packing should be only removed at the moment
of installation.
For cleaning just use water moistened cloth and no solvent.
The connecting and connection cable may not be fastened on the pipe and under no
circumstances be isolated together with the pipe.
Function test
After opening the shutoff devices the installation is to be examined for tightness. By
repeated pressing of the oranges user button various operating parameters e.g. flow,
power, as well as supply and return temperature can be read off on the LCD display of the
integrator unit. The communication indicator on the LCD display serves for the test of the
communication input or output. With the service software the communication outputs
are simulated. The flow can be tested with the help of the flow indicator. The dynamics
of the volume measurement can be tested with the help of the current flow display in
connection with a flow control.
All displayed parameter serve for controlling the meters and/or for adjustment of the
installation. It has to be verified that the regulated flow of the system does not exceed
the maximum permitted flow of the meter. For a comprehensive functional analysis, it is
recommended to read the startup protocol by means of the optical interface and reading
software.
Security seals
Since the type of seals can be country-specifically different, the local regulations are to
be considered. Against possible manipulation or unauthorized dismantling, the heat
meters, the screw connections, as well as the temperature sensors and pockets must
be protected with user seals. The seals may be removed only by authorized persons. By
neglecting this precaution the guarantee obligation is void. It is important that the wires
of the seal are laid out as short as possible and are well strained towards the seals. Only
this way, the seal is protected against unauthorized interference.
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