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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.
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Membrane: The membrane has a lifetime of several years. Afterwards, it has to be replaced.
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Flushing valve: The flushing valve is a part with limited lifetime. In case of a decrease of the adjusted water
flow, the valve is encrusted with calcium and can be cleaned using acid (e. g. vinegar). If the water flow
increases, the valve has to be replaced.
5. Failures
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Waste water flow rate is too high: Close the flushing valve. If this is not possible, the flushing valve has
to be replaced and the membrane power to be checked.
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Waste water flow rate is too low: Check if the pre-filter is blocked. The water pressure at the pressure
gauge behind the pre-filters must not be much lower (at the most 0.5 bar) than the water supply pressure.
Maybe change the pre-filter.
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Pure water flow rate is too low: Check the waste water flow rate. If it is to low too, change the pre-filter.
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Tap water pressure is too low: If you are connected to a municipal water supply, you are not able to have
an influence on the water pressure. For the reverse osmosis unit, a minimum water pressure of 3 bar is
required.
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Module is blocked or used up: The membrane has to be replaced. As spare parts, all standard „18"
membranes with a daily capacity of 75 - 90 / 120 - 150 l can be used. Only TFC-membranes made of
polyamide/polysulfone should be used. We recommend to use original Aqua Medic TFC-membranes only.
If you want to use a membrane with a different capacity, you also have to change the flushing valve.
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Rejection rate is too low: Check the water flow rates (waste water, pure water). If the water flow is ok,
flush the unit for approx. 60 min. If the rejection rate increases, go on flushing until the value is acceptable.
If the rate does not improve, change membrane.
6. Important Notes
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Connection: Connect the reverse osmosis unit to cold water supply only. Higher temperatures increase pure
water production but at temperatures more than 40 °C, the membrane will be destroyed.
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Stopping the unit: If you stop the unit, always close tap water supply. Never only close the pure water tap.
If you run the unit automatically with a solenoid valve, switch the valve between pre-filter and module. Take
care that waste water and pure water can flow away freely.
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Disconnection of the unit: If you want to disconnect the unit for a longer period than 6 weeks, you should
add Aqua Medic disinfection liquid into the module housing. If the unit is started again, flush it for 15 to 20
minutes. We recommend flushing also after shorter periods of stopping, if no disinfection liquid has been
used.
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Storage: The unit has to be stored at temperatures above 0°C. Freezing would destroy the membrane.
7. Warranty conditions
AB Aqua Medic GmbH grants the first-time user a 24-month guarantee from the date of purchase on all material
and manufacturing defects of the device. Incidentally, the consumer has legal rights; these are not limited by
this warranty. This warranty does not cover user serviceable parts, due to normal wear & tear ie: impellers or
drive wheels etc. The original invoice or receipt is required as proof of purchase. During the warranty period,
we will repair the product for free by installing new or renewed parts. This warranty only covers material and
processing faults that occur when used as intended. It does not apply to damage caused by transport, improper
handling, incorrect installation, negligence, interference or repairs made by unauthorized persons. In case of
a fault with the unit during or after the warranty period, please contact your dealer. All further steps
are clarified between the dealer and AB Aqua Medic. All complaints and returns that are not sent to
us via specialist dealers cannot be processed. AB Aqua Medic is not liable for consequential damages
resulting from the use of any of our products.
AB Aqua Medic GmbH - Gewerbepark 24 - 49143 Bissendorf/Germany
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- Technical changes reserved – 04/2019