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HydroPower® RO S
Maintenance and servicing
Membrane protection during storage
If the unit will not be in use for more than 7 days, the membrane must be protected according to the
storage instructions, see chapter „7.2.4 Membrane protection."
If the membrane is not regularly flushed or protected with the UNGER membrane care agent, there is a
risk of blockage and thus a strong performance limitation or damage.
Frost protection
Never store the HydroPower RO S below 5°C.
7.2 Maintenance and maintenance plan
Check the condition of the HydroPower RO S filter regularly to ensure long life.
7.2.1 Daily inspection
Check the performance of the resin filter:
Observe the indication on the TDS-display. It provides information about the filter performance or the
filtered water quality. Press the yellow „on" button to switch on.
• It shows the TDS value behind the resin filter (in PURE mode).
If this value is at or above 10, the resin filter must be replaced.
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7.2.2 Monthly examination
•
Check the performance of the membrane:
•
Switch to TAP BOOST mode and observe the value in the TDS display
•
Now the value of the tap water is displayed
•
To determine the current measured value of the membrane, remove the resin filter (right) and screw
the empty filter cup back on.
Start the water supply in PURE mode and switch on the TDS meter. Note the value.
If the values of the measurement in TAP BOOST mode and the membrane measurement in PURE
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differ by less than 95%, this is an indication of a defective membrane, which may then have to be
replaced.
• Replace the combi-prefilter regularly. It protects the membranes from chlorine.
From a water flow of approx. 30,000l with a chlorine content of 2ppm, the carbon filter is used up and
can no longer guarantee this protection.
Observe the water meter at the side of the housing.
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A water flow of 30,000l is reached after about 4 weeks if you work with the RO-filter 5 days a week for
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6 hours at a time, for example.
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