Wow that's great ! your now getting 5gpd instead of 2gpd!
That RO unit is going got pay for itself in no time !

hehehe

hmmm,, maybe the flow restricters are defective. What kind
of flowrate are you geting from the brine line?

I think I would be calling the manufacture. You might also
chech the flow rate going into the the actual ro part,
just to make sure that it is going through the prefilters
ok. It most likely is, but it could be ruled out, and then
call the manufacture.


Wayne Sallee



TekCat wrote:
Well, yesterday I got my pump, it is Aquatec CDP-8800, hooked it up inline
between kitchen faucet and the RO 125GPD unit from dvoneb. Well, I
definitely saw the improvement, instead of 2GPD now I got 6GPD, however, it
is not even near the 125GPD. I am going crazy here. Any thoughts?




"Boomer" wrote in message
...

That is not a RO booster pump, you have the wrong one. That is a container
pump. The
booster pump is the Aquatec CDP-8800 Booster Pump or 6800

Aquatec DDP-5800 Delivery Booster Pump (YOURS)

The DDP-5800 pumps can draw water from a ***holding tank and pressurize
it***, or boost
the pressure from a low pressure source.


Aquatec CDP-8800 Booster Pump( WHAT YOU NEED)

For RO Systems*** Over 50 GPM ***- CDP-8800 Series High Flow). The
CDP-8800 Series pumps
are also compatible with most hydraulic shut-off valves with the optional
PSW shut off
tank controller switch. Distinguishing Features & Operating Benefits:
Outstanding
toughness, durability. Designed for 30,000+ operating hours. ***Adjustable
pressure boost
between 40-120 PSI.***

Aquatec CDP-6800 Booster Pump.

6800 Series (Low Flow). For membranes ***up to 50 GPD.***


--
Boomer

Want to talk chemistry ? The Reef Chemistry Forum
http://www.reefcentral.com/vbulletin/index.php


Former US Army Bomb Technician (EOD)
Member; IABTI, NATEODA, WEODF, ISEE & IPS

If You See Me Running You Better Catch-Up


"Pszemol" wrote in message
...
: "Boomer" wrote in message
...
: I do not know what you mean by cycle. A booster pump should keep a
constant pressure on
: the RO membrane. Cycling would be self-defeating, for if the pressure
changes, do to a
: on-off phase, there would be a continuous pressure difference on the
membrane.
:
: Or are you talking about a RO container pressure pump, that keeps made
RO water in a
: container at x pressure to pump to y place.
:
: OK, more details...
: I have got Aquatec DDP5800, what they call "a demand/delivery pump".
: Hooked it up to my KENT 10gpd barebone RO system and turned the pump on.
: There was a pressure gauge in between the pump and the prefilters...
:
: When the pump was cycling on and off on the limit switch I saw the gauge
: going from the 40PSI (my tap water static pressure) to 65-70 PSI the
moment
: the pump was on. 1/4, maybe 1/8 of the second later the pump turned off
itself on
: the pressure switch and the pressure started decreasing to the 40PSI
when the
: pump turned itself on again... This cycling seem to be due to the fact
the pump
: had large capacity and pumped pressure high up really quick reaching the
limit.
: The water did not have the way to escape through the RO filter that
quickly so
: the pump turned off. When the pressure relatively slowly dropped back to
the
: 40PSI the pump turned itself back again...
:
: I almost feel like I need a "water capacitor", using kind of electrical
analogy...
: Some flexible device/container which could take the pressure from the
pump
: and release it over time feeding the need for water of the RO filter...
Or a much
: smaller capacity pump which will just barely keep up with RO filter
demand.