I learned something today with from a great 54 owner, from
Dessalator, and from reading the recent specifications sheet for Filmtec SW30
The actual pressure for the Green Zone on a Dessalator high-pressure gauge is between 60 and 65 BAR
In normal seawater temperature and salinity and at
55 BAR the SW30 series of membranes will produce:
SW30 2521 = 47 liters/hour or 3*47 = 141
SW30 2540 = 109 liters/hour or 2*109 = 218
Obviously the production rate with pressure set
inside the Green Bar (60-65 BAR), will be greater than the above
Dialing back the pressure to change the product
water production to the original specs of the watermaker may cause the water
maker to shut down.
My statement of reducing the pressure to set the produced
water in the sight-glass at the original output for the D50/60, D100, and D160
is no longer valid for normal water temperature and salinity. And the D160 with
new membranes will produce over 200 liters/hour.
WARNING: Filmtec has increased the efficiency of these
membranes and depending on the age of your membrane(s) you may not see the
I attach the Filmtec Spec Sheet that I refer to:
I hope this helps and clears up things.