Safety Requirements - Ofs Softening Control Instruction Manual

6.3 Safety requirements

The measuring device is set up as wall mounted unit and must be installed ac-
cording to installation instruction.
It should be operated in rooms with a relative humidity between 20 % and 60
% and an ambient temperature between 5°C and 50°C. It must be ensured that
condensation can not form in the housing.
Operation in connection with ionization or electrolysis units is not permitted.
The device must be protected against liquids and unauthorized mechanical or
electrical intervention.
The device may be operated only with a safety extra-low voltage of 24 V DC
respectively with the wall power supply for 230 V AC provided by the manu-
facturer.
The mechanical installation and commissioning must be carried out with the
power disconnected.
The electrical connection to external control equipment and instrumentation
must not exceed the specified voltage.
The raw water and soft water of the monitored or controlled process must cor-
respond to the relevant drinking water specifications.
During operation a constant water pressure of minimum 1 up to maximum 10
bars on the samplers is to ensure. The difference between raw and soft water
pressure should be as low as possible.
The sample liquids should be free of any particles, otherwise flow filters of ≤
0.1 mm has to be installed up streamed to the sampling units.
The electric power must be disconnected from the unit prior to the removal of
the sensor from the measuring chamber.
The system is under water pressure up to the solenoid valves. The raw and soft
water inlet must be cut off prior to carrying out any maintenance work on the
solenoid valves or dismantling the measuring unit.
Any time the unit is taken out of service, the sensor needs to be removed from
the device and stored correctly.
The Manufacturer reserves the right to make any technical changes to reflect
further developments.
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