Aqua-Base ARUBA Comfort 60I Manual De Utilización página 17

AQUA-BASE
ARUBA Comfort
Technical manual
3.4 Operation with installed options
3.4.1 Sandfilter
(D250 or D450)
The sand-filter is fitted before the 20µ & 5µ cartridge filters. It is equipped with valve(s) for positioning
the filter in backwash, rinsing or filtration. On the D250 model with 3 valves and with 1 multi position
valve on the D450 model.
1. For a cycle of sand-filter cleaning, stop the unit by pressing the STOP button.
2. BACK-WASH: Position the valve(s) of the sand-filter to backwash and press the BACKWASH
button.
This cycle cleans the sandbed by passage of sea water in the opposite direction (bottom to top)
and send the impurities retained by the sand, out towards the discharge in the sea. The time of
the cycle is 5 minutes (it is possible to stop the cycle at any time by pressing the STOP button).
3. RINSING: Position the valve(s) of the sand-filter to rinsing and press the BACKWASH button
again.
4. When these two cycles are finished, reposition the valve(s) of the sand-filter back to filtration for
normal functioning.
Valve positions:
Filtration
3.4.2 Automatic flushing of the membrane(s)
First, stop the unit by pressing the STOP button.
The following procedure is executed fully automated after pressing the FLUSHING button (short
press).
The machine will automatically perform the following steps:
a. The production valve (V64) stays in the reject position,
b. The flushing valve (V17) opens, (the blue LED of the button is lit during the cycle)
c. The water from the on-board fresh water network passes through the system
d. The flushing valve (V17) closes. (the blue LED turns off)
The solenoid valve (V17) opens to take water from the on-board fresh water network (between minimal 1.5 and 3
bar max.). The flushing cycle starts and continues for 10 minutes, before the solenoid valve closes. (The HP pump
P40 does not start during this cycle)
The membranes are flushed with approximately 18 litres of fresh water from the on-board fresh water tank.
The water from the on board water network can not contain more than 0.4 mg/L of chlorine. This is the
maximum load that can be handeled by the active carbon filter.
NB: The pressure regulating valve (V49) is best let in its production position;
Without backpressure there is too much flow and a too large volume of fresh water will be wasted.
•
Backwash
and is rejected,
Rinsing By-pass
REV.J
P17/108