4
1.3 Function
When the water tap is opened and the system is
switched on, the dosing valve and the safety valve open
and 150 ml water are supplied to the mixing container .
The water level in the mixing container is monitored by an
electronic probe . Once the contact on the probe is
set off, the magnetic valves and (compressed
air/chemical) open. This activates the compressed air driven
double-membrane pump , causing 1.75 ml hydrogen
peroxide to be withdrawn from the chemical bottle and
added to the mixing container.
If the water level drops below probe A, the dosing valve
opens again until overflow probe is reached. By the
time the water reaches this probe, the mixing container has
been filled with 300 ml of water. Magnetic valves and
open again, and add another 1.75 ml of chemical to the mixing
container. This ensures that the required concentration of
disinfectant in the solution is continuously maintained.
In the mixing container, the water inlet is in the form of a
cascade , ensuring that the ATMOS
®
Aqua clean is
separated from the water supply, as required by the DVGW
(The German Gas and Water Association) (DIN 1988, Part 4).
This ensures that water contaminated with micro-organisms
or mixed with chemicals cannot flow back into the water
supply system.
If a water-fed unit is activated, the decontaminated water
flows from the mixing container, via the pressure container
and to the appropriate instrument.
Naturally, this causes the water level in the pressure container
to fall, together with the water pressure. A pressure-sensitive
switch , fitted to the pressure container and adjusted
to 3.5 bar, activates the membrane pump , which is
responsible for emptying the mixing container, filling the
pressure container and maintaining the required water flow
pressure.
An air cushion in the pressure container compensates the
water level. If necessary, the air cushion is topped up with
compressed air (magnetic valve 4) - all this is done to ensure
a stable water jet for the instrument. The air cushion probe
ensures that the air pressure is kept constant.
The disinfectant is withdrawn from the chemical bottle
. A disinfectant sensor controls the chemical
existence. If no more chemical can be withdrawn (e.g. the
chemical bottle is empty), an error message occurs.
Please note that only ATMOS
®
Green&Clean WK
may be used, as the electrical sensors are adjusted
to this product!
1.0 Introduction
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Fig. 1
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Summary of Contents for 530.2121.0
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