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First, check all connections on water tightness. If leakage occurs, tighten the fittings or the housing. If water
escapes from the thread of a fitting, it can be unscrewed after removing the hose and sealed with some additional
Teflon tape. If water drips out between the hose and fitting, the respective hose should be pushed in deeper.
Now, the concentrate flows out of the waste water outlet at closed flush valve. After some minutes, also purified
water flows out of the permeate outlet, however, at a lower flow rate.
The pure water, produced in the first 2 hours, has to be discarded because it may contain residues of the
disinfection liquid which has been filled in the module for storage. After 2 hours, the water can be used.
3. Use of the water
Rejection rate:
The retention rate of the membrane is up to 98%. Nitrate and silicate are only rejected up to max. 70%.
The water can be used in various areas:
In saltwater aquaria:
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for preparation of salt water
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for preparation of „Kalkwasser" or Calcium enriched water
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for re-filling evaporated water
In freshwater aquaria:
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pure for breeding soft water fish
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hardened up with Hydrocarbonate in all fresh water tanks
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pure for re-filling evaporated water
In households:
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for car batteries and flat irons
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for home plants, especially orchids, bromelids and cacti
In laboratories and industry:
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everywhere, where up to now distilled or deionized water has been used and a conductivity of >20 µS is
accepted.
4. Maintenance
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Pre-filter: If the tap water is not extremely polluted, a yearly replacement of both pre-filters will be sufficient.
If the water is higher polluted, the filters have to be changed more often - as required. If the pre-filter is
blocked, the water production will slow down. On changing the pre-filter, always rinse it before
mounting it to the osmosis module.
Membrane: The membrane normally has a lifetime of several years. Afterwards, it has to be replaced.
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5. Failures
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Waste water or pure water flow rate is too low:
Check the pre-filter for blocking. Connect water inflow directly to the module. If the waste water flow is normal
again, change the pre-filter. If the flow is still too low, the flush valve or membrane is blocked or has to be
renewed.
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Tap water pressure is too low:
If you are connected to a municipal water supply, you are not able to influence the water pressure. For the
reverse osmosis unit, a minimum water pressure of 3 bar is required.
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The membrane is blocked or used up:
The membrane has to be changed.
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