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3.0 Application / installation
Time switches switch ON, OFF and over connected electrical units, depending on
time, on a daily or weekly cycle and related to date.
–The time switch TR 641 S / TR 641 S DCF may only be used in dry
areas
–Time switches are suitable for use in environmental conditions with nor-
mal pollution.
–The time switch TR 641 S / TR 641 S DCF is suitable for mounting on
the 35 mm top-hat rail (DIN EN 50022)
–Wall mounting with installation kit 907 0 053
3.1 Safety instruction
The connection and installation of electrical equipment may be
effected only by a qualified electrician. National regulations
and any valid safety conditions should be observed.
Interference with and changes to the product will result in can-
cellation of the guarantee.
3.2 Installation instructions
In spite of expensive protection measures, exceptionally strong magnetic
fields can lead to the destruction of the micro-processor controlled time
switch.
We therefore recommend attention be given to the following points before
installation:
– Use separate lead for the mains voltage supply.
Suppress inductive loads with suitable RC filters.
Do not mount product in direct proximity to sources of interference as e. g.
transformers, contactors, PCs and TV and communication equipment.
After suffering intereference, we recommend, before re-setting, a RESET with
a new initial set up (chapter 5.3).
Strongly heat-generating products on the right side of the product shorten the
life of the battery.
3.3 Electrical connection
National regulations and any valid safety conditions must be
observed.
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