Thank You gary
This is very helpfull.
--- In firstname.lastname@example.org, amelliahona <no_reply@...>
membranes in the world. That manufacturer is FilmTec. FilmTec wasa rather
small company that manufactured membranes by hand until Dow Corningbought
them a few years ago and developed robotic manufacturingprocesses. This
development resulted in improved membranes that give higherproduction
than the original hand laid up membranes. The other great benefitwas a drop
in price. The membranes are less than 50 percent of their originalcost.
150 l/hr water maker) are FilmTec SW30-2540 (that is SW = SeaWater, and the
2540 = 2.5 inch by 40 inch membranes. I suspect that yours are thesame. I
purchased mine from a company Air, Water, Ice. Inc., Phone in USAis 776-461-0256.
Walter is the owner and is very knowledgeable. The Film Tec website shows that
the SW30-2540 will produce 166 liters/hr for two membranes atoptimal temp.
The rate is higher than the original design for the Dessalatorsystem because of the
higher quality membranes (29 square feet surface area) that is dueto robotic
glue lines on the membranes.wasn't able to find
any evidence that the salt rejection rate of the membrane isaffected by temperature.
The reading from the TDS meter may change due to temperature thoughas you are
literally measuring electrical conductivity of the water and thisis affected by temp.
The salt rejection rate is dependent on pressure and if themembrane isn't operated
at optimal pressure the TDS (total dissolved solids) will behigher.
system after start
up or if you waited at least 5 minutes before testing. See myprevious post related to
TDS Creep that occurs upon system shut down. It takes a fewminutes for the TDS
Creep to go away after system start up.caps and membrane
nipples (see photo section under watermaker). Product rate mayactually increase
as the membranes fail (that was the case with mine).Dow Corning
Filmtec web site under literature. This is more likely to cure afalling production
rate than to cure a high TDS. (1000 TDS isn't really that bad.City water is
commonly 800 - 900 ppm. My system with brand new membranes producesthey are shipping
over seas request them to double package them. The shippingcontainer
they sent mine in was somewhat damaged just shipping across theUSA. No
damage to the membranes but it would have been damaged if they hadthe
process of replacing the membranes. About a 4 hour job but requiressection).
have no electrical traces to any control circuity. It is my opinionthe
testingwatermaker is testing at 1200 PPM. The water from the tap is
refrigeratedat 1000 or under ppm and when I test the water from a
producingbottle it tests at around 600 to 700 ppm. My conclusion is that
bad.this quality of water all along I just had no way of testing.
theProduct amount is normal.
am150 LPH 220 model.
making too much out of this.