FAQs

FAQs

How does PI®-Power Compact work?

Reverse osmosis cleanses the water of coarse substances, the water is then swirled in a clockwise direction in the PI®-Cell Vitalizer, then enriched and energised with natural mineral ions. The energy level is regulated at the end of treatment. Exact details can be found in the specialist information/ product manual.

What does “direct flow” mean?

This is currently the state-of-the-art reverse osmosis method in which water is cleansed as it “flows through” and no additional storage tank is therefore necessary, where a germ threat could arise. The cleansed volume of water is approx. 1.5-1.8 litres per minute, dependent on the water temperature.

What distinguishes “direct flow” reverse osmosis from conventional reverse osmosis systems?
Conventional systems PI®-Power Compact Direct Flow System
Slow water cleansing Rapid water cleansing in flow procedure, water-cooled pump, thus no thermal problems
Storage tanks necessary No tank necessary
Risk of contamination No danger of contamination due to flushing cycles before and after production and high-pressure flushing every 360 mins., check valve in the drain pipe.
Stale / flat water Always fresh water
Great spatial requirements Compact design
Prod. volume: 0.14 l/min of which:
Pure water approx. 20%
Drain approx. 80%

Prod. volume: 3.0-3.4 litres/min of which:
Pure water approx. 55% = 1.5-1.8 l/min

Drain approx. 45% = 1.5-1.6 l/min
No system and production control Ongoing quality control
Where is it best to connect the PI®-Power Compact?

Anywhere were drinking water is taken from, i.e. at the end of the pipe, for example in the kitchen under the sink.

Which fittings should I use?

A tap is supplied as standard (see parts list).

Which substances are removed in the phase of cleansing of coarse particles of PI®-Power Compact?
Pi Wasser Molekülgrössen EN
What does “osmosis” mean?

Osmosis – i.e. self-activating migration of substances through membranes – always occurs when two watery solutions with different ion concentrations (with a different number of salt particles) are separated from one another by a semi-permeable membrane. Osmosis is frequently described as the spontaneous passage of water or another solvent through a semi-permeable membrane which is permeable for the solvent, but not for the substances dissolved in it. If a vessel with two chambers is now separated by such a membrane, a chamber filled with a salt solution and another filled with pure water, this basic scientific principle occurs. The two different fluid concentrations aim at a concentration equilibrium in both chambers. This is attained by the dilution of the salt solution. The process is called osmosis.

What does reverse osmosis mean?

The principle of osmosis is reversed in the reverse osmosis technique. Pressure is applied using a high-pressure pump on the side with the high ion concentrations (tap water / untreated water) which forces the water in the other direction, i.e. onto the pure water side with the low concentration. The undesirable dissolved substances (e.g. hardness, nitrates, silicic acid, heavy metals, radionuclides, pharmaceutical residues, etc.) cannot pass through the ultra-fine membrane due to their molecular size – there are thus almost exclusively water molecules and no ions on the pure water side. As tap water with the contained substances is constantly subsequently flowing during operation, the substances retained by the membranes must be removed on an ongoing basis so that a blockage can be precluded. Consequently, a reverse osmosis system produces drain which separates the undesirable substances in concentrated form in addition to the pure water.

What is a membrane?

A membrane consists of different thin layers of a plastic composite fabric which is wound around a plastic pipe in a spiral shape. Also known as TFC (Thin Film Composite Membrane). The material of the membrane is semi-permeable: this means it only lets the purest water molecules through the fi nest pores (0.0001 micrometer = atomic size). Contaminations such as isolated ingredients etc. are washed out as dirty water with the “drain” which is not capable of penetrating through the fabric.

Can I remove all of the lime from the water with PI®-Power Compact?

Yes, up to more than 99%.

Does my body not need the lime?

Lime (and other minerals too) is anorganically dissolved in water and is therefore very difficult for the body to process. Calcium, magnesium and other minerals are best absorbed organically, i.e. via vegetables, fruit, bread, etc – these are thus easier for the body or cell to absorb.

What about the medication residue and hormones?

Over 99 % of these are also removed.

Are lead and nickel discharges permanently removed from fi ttings or pipes?

Yes, lead and nickel are removed.

Can I use PI®-Water to prepare baby food?

Yes, your baby will enjoy it.

Can I use PI®-Water for cooking?

Yes, of course. Your food and recipes will taste much better as the water contains no pollutants or other substances which have an impact on taste.

How do I know if the system is working properly?

The system has a display which shows precisely when any defects are occurring.

What change to conductivity is attained by reverse osmosis?

It depends on the composition of the tap water. As an approximate value, it can be assumed that with a tap water value of approx. 500 microsiemens the value after reverse osmosis is approx. 10-12 microsiemens.

What is the conductivity of PI®-Water?

Approx. 15-30 microsiemens when flowing through. This value also depends on the residual content of natural carbonic acid inter alia.

Is the value attained immediately?

No, because the membranes in reverse osmosis are impregnated with a special medium which affects conductivity. This is compatible with drinking water. But after approx. 200-300 litres the membranes work at “peak performance”.

What needs to be done if the PI®-Water still tastes a little of impregnator after the cleansing cycles?

This may happen: residues still adhere to the membranes. This can have a slight effect on taste. In this case always allow the water to run a little before enjoying, then the taste is no longer impaired. The last residues are also removed aſter approx. 100-150 litres.

What should happen if the pure water yield decreases?

First of all make observations, as this may be associated with a change in water temperature. The yield decreases for cold water. If the yield remains low (approx. 0.5 l/min), then the following causes may apply: in the event of repairs and overfl ows, the larger volumes of rust, sand and other dirt always pass through the public water supply network. If you have not installed a sieve or a filter in your household/house, you will also find this dirt for example with the tap aerators on the water fittings. And this coarse dirt and rust can also block the pre-filters and thus significantly reduce the flow volume. If the pre-filters are OK, the reduction of the pure water yield can also indicate that a membrane replacement is required.

What should happen if the device is not used for a long time?

Disconnect the PI®-Cell Vitalizer, remove the cartridge and dry out, place in the refrigerator if necessary. The pipe from the reverse osmosis system to the PI®-Cell Vitalizer must be sealed or connected to the tap pipe. The reverse osmosis system remains switched on because this cleans itself automatically via flushing cycles.

When does the cartridge in the PI®-Cell Vitalizer need to be replaced?

The manufacturer issues a warranty for 10,000 litres. Subject to the pre-requisite that PI®-Power Compact has been installed exactly in accordance with the operating instructions and has always been operated in such a way, the increase in conductivity by the PI®-Cell Vitalizer is at least 10 to 15 Microsiemens, if the device works in throughfl ow. The cartridge should only be replaced when this value is no longer attained. This may already occur aſt er 6-7 years, or maybe only aſter 10-11 years.

How do I know when the membranes need to be replaced?

If the screen displays BAD TDS and doesn’t disappear anymore.

What maintenance costs are incurred with PI®-Power Compact?

The filter set is replaced every 6 months (DIN standard). In our experience, the two membranes are replaced every 3-4 years, please observe pure water yield. (Costs see current pricelist)

Can a steamer be connected to the system?

Yes, easily. A T-fitting can be installed between the PI®-Cell Vitalizer and the tap which is then connected to a steamer via a check valve. When the steamer is switched on, the system starts to process PI®-Water and fills the vessel in the steamer. Your food is thus steamed with PI®-Water.

Can a dishwasher or washing machine be connected to the system?

Yes, very easily. A T-fitting can be installed between the reverse osmosis system and the PI®-Cell Vitalizer, which is subsequently connected to a dishwasher via a check valve. When this is switched on, the system starts to prepare reverse osmosis water and fills the vessel in the dishwasher. Your dishes are therefore cleaned with reverse osmosis water and you require no salt and only a small amount of washing-up liquid.

What happens with the packaging?

Please keep the packaging because the manufacturer only provides warranty for original packaging.

Why the screen displays „PROTECTION WATER LACK“?

Possibly the water pressure might be too low or some dirt might have accumulated in the sieve of the inlet filter (FEED) or basket sieve of the Water Stop interfering with the instreaming water.

Has PI®-Technology got anything to do with the company Nikken?

No. There is absolutely no connection.