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When it comes to reversing this process and achieving a
flow of water with a lower concentration of salts from
one with a higher concentration, a sufficient pressure of
the water with a higher concentration must be exerted
on the membrane to overcome the tendency and natu-
ral flow of the system. .
This process is what we call reverse osmosis. Currently,
reverse osmosis is one of the best methods to improve
the characteristics of water, through a physical system
(without the use of chemical products).
The water to be treated exerts pressure on the se-
mi-permeable membrane, so that part of it will manage
to pass through the pores of the membrane (osmotic
water), while the rest of the water (rejected or with a
high concentration of salts) will be diverted towards the
drain ( Fig. 1).
RO Membrane
Pollution
Bacteria
Chemical compounds
Mineral salts
Water
4. ADVERTENCIAS PREVIAS
Attention:
- These appliances are supplied with refrigerant gas, IS-
OBUTANE (R-600a), which is a natural gas with no har-
mful effects on the environment, but it is flammable.
- The appliance must be transported and moved with
the utmost care so that it is not knocked or shaken ex-
cessively. Failure to comply with this rule could put the
device out of service.
- Keep the ventilation openings of the appliance or the
built-in structure, free of obstructions.
- Do not damage the cooling circuit. If the refrigeration
circuit is damaged, with possible refrigerant gas leaka-
ge, it could create explosion risks caused by sparks or
external flames.
- Under no circumstances operate your appliance if it
appears to be damaged.
- In the event of a breakdown, contact your Technical
Service, ventilate the room where the appliance is lo-
cated and avoid flames or work on the appliance.
Membrane
Water inlet
Pressure on membrane
Reject flow
Membrane
Pure water flow
- For recycling, contact your local waste disposal ser-
vice or the seller. The appliance must be transported
without damaging the refrigeration circuit.
- This appliance is intended to be used in domestic
and similar applications such as staff kitchen areas in
shops, offices and other work environments; rural and
client accommodations in hotels, motels and other re-
sidential type settings; bed and breakfast type settings;
catering services and similar non-retail applications.
Attention: Read carefully and read this manual
before installing and starting up the equipment.
If you have any questions about the installation, use
or maintenance of this equipment, contact the techni-
cal assistance service (TAS) of your distributor.
Attention: These equipments ARE NOT WATER
PURIFICATORS. If the water to be treated comes
from a public supply (and therefore comply with
current legislation), this equipment will substantia-lly
improve the quality of water. Otherwise, it will be ne-
cessary to carry out a physical-chemical and bacte-
riological analysis of the water, in order to ensure its
correct purification by applying the appropriate tech-
niques and equipment to each need, PRIOR TO THE
INSTALLATION of the equipment. Get in touch with
your distributor in order to be advised on the most
appropriate treatment for your case.
The water treatment equipment needs periodic main-te-
nance carried out by qualified technical personnel in or-
der to guarantee the quality of the water produced and
supplied.
4.2. Conditions for the correct functioning of the equip-
ment
• Do not feed the equipment with hot water (T>40ºC).
• The ambient temperature must be between 4º and 45ºC.
• Some models incorporate a pump. In the event that the
mains pressure is greater than 2.5 bar, a pressure regulator
must be placed prior to the water entering the equipment,
set at a maximum pressure of 2.5 bar.
• For water with salinity higher than 2000 ppm consult your
distributor.
• It is recommended that the water to be treated be sof-
tened or with a maximum hardness of 15 ºHF in order to
obtain optimum performance from the equipment.
• In the event that the water to be treated has a hardness
greater than 15 ºHF, a reduction in the life of the mem-
brane and in the performance of the equipment could be
produced.
• If the water to be treated contains:
- Elevated concentrations of iron and manganese (Greater
than 1ppm measured in the rejection of the machine).
- Prolonged hyperchlorination over time.
- Sludge or turbidity greater than 3 NTU.
- A concentration of nitrates greater than 100 ppm.
- A sulphate concentration greater than 250 ppm.
- Contact your distributor to recommend the most suita-
ble pre-treatment for your case, and thus ensure the pro-
per functioning of the equipment, avoid damage to com-
9
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