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.