West Control Solutions TB 40-1 Temperature Limiter - Manual (Page 28)

10 Safety hints
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Modified definition according to EN 14597 (former DIN 3440)
“Temperature control devices and temperature limiters for
heat generating systems”
After introduction of this new standard (2005-12) the definitions
described therein were changed again. According to the latest
release (EN14597, 2009-1) a temperature limiter TB is no longer
considered as operating equipment (as a temperature monitor TW)
but as protective equipment (!) which needs to meet higher
requirements
The most important requirement for a TB has now been added:
Any device or component must be failsafe and the supply to the
plant switched off!
This unit was built and tested in compliance with VDE 0411-1 / EN 61010-1 and
was delivered in safe condition.
The unit complies with European guideline 89/336/EWG (EMC) and is provided
with CE marking.
The unit was tested before delivery and has passed the tests required by the test
schedule. To maintain this condition and to ensure safe operation, the user must
follow the hints and warnings given in this operating manual.
The unit is intended exclusively for use as a measurement and control instrument
in technical installations.
a
Warning
If the unit is damaged to an extent that safe operation seems impossible, the unit
must not be taken into operation.
ELECTRICAL CONNECTIONS
The electrical wiring must conform to local standards (e.g. VDE 0100). The input
measurement and control leads must be kept separate from signal and power
supply leads.
In the installation of the controller a switch or a circuit-breaker must be used and
signified. The switch or circuit-breaker must be installed near by the controller
and the user must have easy access to the controller.
COMMISSIONING
Before instrument switch-on, check that the following information is taken into
account:
w Ensure that the supply voltage corresponds to the specifications on the type
label.
w All covers required for contact protection must be fitted.
Safety hints
28 TB40-1