AQUA-BASE
ARUBA Comfort
Technical manual
Testing the high-pressure security (PSn43):
After starting the machine, gradually close the pressure regulating valve (V49).
The pressure in the membranes will rise above the threshold of 72 bar (Pi43) and the machine stops in
fault mode:
High-pressure fault :
Reset the fault by pressing the STOP button for 5 seconds
If the machine does not stop at 75 bar, reopen the valve (V49) directly to avoid damaging any of the
components. Replace the 0-100 bar high-pressure sensor (PSn43) Ref: 900150
Do not forget to fully re-open the pressure regulating valve (V49) before restarting the machine.
4.7
Cleaning the salinity probe
The cleaning of the probe should be carried out every year and each time an
anomaly has been occurred; faulty salinity levels, discharge anomaly...
•
Undo the cell by holding the probe and its cable, unscrew the
adapter and take the probe out of its housing.
•
Clean the probe's electrodes with a brush under running water and,
if necessary, using a domestic detergent.
•
Rinse the probe with running water and screw the adapter back
while holding the probe still.
Be careful not to bend or change the position of the two electrodes of the probe. Their distance to each
other is critical to a correct measure.
4.8
Cleaning the membrane(s)
4.8.1
When should the membrane(s) be cleaned?
Cleaning of the membrane is necessary once a year (see §4.1: Maintenance schedule)
In normal operation, the R/O membrane can be clogged by mineral and organic deposits which accumulate
until they cause a drop in fresh water production quality and quantity. The membrane should be cleaned each
time the quantity or the quality of the produced water changes excessively. Before proceeding to cleaning
the membrane(s) check that the change in performance has no other cause, such as:
•
Low seawater temperature.
•
Clogged filter(s), water system badly drained, leading to lack of water at the pump.
•
Inefficient operation of the HP pump: leaks...
•
Salinity probe clogged...
Cleaning of the membrane can only be carried out when it's inside the pressure vessel. Never take a
membrane out of its pressure vessel unless it is to replace it.
4.8.2
how should the membrane be cleaned?
1.
Flush the membrane(s) as described in chapter §3.3.2
2.
Fill the auxiliary tank with 10 liters of fresh water produced by the unit or dechlorinated water from an
other source.
3.
Prepare the Alkaline solution "MC11" (from the cleaning kit) by mixing it in the auxiliary tank.
Alkaline and Acid cleaning solutions are aggressive and can cause burning. PROTECT YOUR EYES AND
HANDS DURING THIS OPERATION (gloves, goggles....)
4.
Put the cleaning pipes (A7, A8) in the auxiliary tank and turn the reject valve (V50) to cleaning position
to prepare a closed loop.
•
STOP, ALARM blinking slow & START blinking fast
(or §3.4.3 if auto flush is installed).
REV.J
P23/108