BWT STANDARD Installations- Und Anwendungshandbuch Seite 57

8. TROUBLESHOOTING
The system is always Water supply pressure too low
on (water is drained
continuously)
Pre-filter cartridges are clogged
Membrane is clogged
Missing or misplaced flow restrictor
Failure of auto shut-off valve
Failure of check valve in the transition
fitting installed at membrane housing
permeate outlet
Pressure tank is deflated
The system will not Pressure tank is full
turn on (no water
runs to sink drain)
Flow restrictor is clogged
Drain saddle fitting is not centered on
drain pipe hole
Drinking water has Air in the system
a milky or cloudy
appearance that
goes away after
a few minutes
Water has a taste Carbon post-filter has expired
and/or odor
Preservative solution in the
membrane has not been flushed out
Contamination in reverse osmosis
system
Contamination in pressure tank
Pressure tank holds Tank bladder is overpressurized
too little water
No water is Tank bladder is underpressurized
dispensed from
faucet albeit
Tank valve is closed
tank is full
Code P0090636 - Rev 0 - 19/06/2019
This RO system requires at least 3 bar (44 psi) to function
properly. If necessary, install a pressure booster pump or
consult a plumber
Replace pre-filter cartridges
Measure flow of product water by closing the tank valve and
opening the faucet. Measured flow rate should correspond to
nominal membrane flow rate.
Flow restrictor must be installed in the tube running from
membrane housing to drain. Flow restrictor must face
membrane housing. If it faces drain saddle fitting, clean it
and swap ends of the tube so that it is placed at the outlet of
membrane housing. If flow restrictor was not installed, install
one.
The RO system operating ceaselessly while the tank is full may
be due to automatic shutoff valve failure. Contact the store
where you bought this product if no other possible cause can
be established
Pressure in the empty tank should be 6-9 psi (0.4...0.6 bar).
Charge the tank to the above pressure if necessary
Open drinking water faucet and let some water out. It is
normal for the system to stand idle when the pressure tank is
full of water.
Open drinking water faucet and let some water out. It is
normal for the system to stand idle when the pressure tank is
full of water.
Clean or replace flow restrictor
Correctly position the drain saddle
Some air in the system is normal for a few days after the
system was installed.
In some cases, air bubbles may appear due to supply water
being significantly lower temperature than your home's
ambient temperature
Replace the post-filter
Drain all the water from the tank and let the system re-fill it
Sanitize the system per instructions in section 7
Replace the tank or sanitize per instructions in paragraph 7.1
Pressure in empty tank should be 0.4-0.6 bar (6-9 psi). Make
sure pressure in your tank is in line with the above figures
Pressure in empty tank should be 0,4-0,6 bar (6-9 psi). Make
sure pressure in your tank is in line with the above figures
Open tank valve
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