UnderWaterVanya said:
When a filter is brand-brand new, it's around 17PSI -- when I "clean" it (hose it off) I can get it around 19PSI -- but it doesn't last... it usually sits around 20PSI.
$%^&* What the heck did I do now?
- Thread starter FixItPete
- Start date
When a filter is brand-brand new, it's around 17PSI -- when I "clean" it (hose it off) I can get it around 19PSI -- but it doesn't last... it usually sits around 20PSI.
- Jun 14, 2012
- 2,671
- Pool Size
- 13500
- Surface
- Vinyl
- Chlorine
- Salt Water Generator
- SWG Type
- CircuPool Edge-40
FixItPete said:
That's interesting...
Most cartridge filter users say that they never see a rise in pressure and the info on the Jandy site says 15psi is the upper range expected for starting pressure.
If the filter is too small, then the filter will clog and the pressure will certainly go up quickly.
FYI, for your pool size of 16000 gallons, we would generally recommend a cartridge filter at least 240 sqft (or 45 sqft DE or 3 sqft sand). So your filter is less than half the size we would recommend. So you are going to see much faster clogging, higher pressures, and possible dirt pushing through the cartridge if the pump is too big.
EDIT: Looking back, looks like I stated the same thing on 8/15 ... oops.
FYI, for your pool size of 16000 gallons, we would generally recommend a cartridge filter at least 240 sqft (or 45 sqft DE or 3 sqft sand). So your filter is less than half the size we would recommend. So you are going to see much faster clogging, higher pressures, and possible dirt pushing through the cartridge if the pump is too big.
EDIT: Looking back, looks like I stated the same thing on 8/15 ... oops.
Well you were right then, and you still are now :-Djblizzle said:
That is very high pressure (too high) for a cartridge filter IMO. What pump do you have?FixItPete said:
- Jun 14, 2012
- 2,671
- Pool Size
- 13500
- Surface
- Vinyl
- Chlorine
- Salt Water Generator
- SWG Type
- CircuPool Edge-40
Re: $%^&* What the heck did I do now?
Really? That is what I thought too before reading post after post after post from cartridge users saying they "never saw an increase in pressure" they had to notice decreased flow in order to realize the filter needed cleaning. Of course those filters are sized per the recommended charts here and those users typically clean their filters very rarely (some just once a year).
- Sent using Tapatalk
FixItPete said:
Really? That is what I thought too before reading post after post after post from cartridge users saying they "never saw an increase in pressure" they had to notice decreased flow in order to realize the filter needed cleaning. Of course those filters are sized per the recommended charts here and those users typically clean their filters very rarely (some just once a year).
- Sent using Tapatalk
Re: $%^&* What the heck did I do now?
My filter pressure sits around 20 with my pump on high. It's at 0 with pump on at 1240 RPMs. Even with my old filter and pump, the pressure stayed at 20, even after cleanings. I've never seen a pressure rise.
My filter pressure sits around 20 with my pump on high. It's at 0 with pump on at 1240 RPMs. Even with my old filter and pump, the pressure stayed at 20, even after cleanings. I've never seen a pressure rise.
I'm a newbie, but that doesn't make any sense. The more a filter clogs, the more resistance - the more resistance, the higher the pressure builds up. So either the filter never gets dirty, or something isn't right.
Either way, I'm going to get a new filter (better quality) cart. and see what happens...
Either way, I'm going to get a new filter (better quality) cart. and see what happens...
Re: $%^&* What the heck did I do now?
My guess would be it's because my filter is oversized for my pool.
My guess would be it's because my filter is oversized for my pool.
- Jun 23, 2012
- 1,054
- Pool Size
- 16000
- Surface
- Plaster
- Chlorine
- Liquid Chlorine
- SWG Type
- Pentair Intellichlor IC-40
I have a brand new DE filter, and right off the bat I had 20 PSI.. The PB acted like that was ok... It does go up when it needs backwashing. Then it goes back down to 20 PSI. I know they brought out a new gauge early on - but it still showed 20 PSI. Am I wrong assuming this is "norm?"
- Jun 14, 2012
- 2,671
- Pool Size
- 13500
- Surface
- Vinyl
- Chlorine
- Salt Water Generator
- SWG Type
- CircuPool Edge-40
Re: $%^&* What the heck did I do now?
Speculation is that with a cartridge filter the very large surface area and the low accuracy of pressure gauges allow a small rise in pressure to go undetected.
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DE and sand do show a rise in pressure, only cartridge does not.imrodee said:
Speculation is that with a cartridge filter the very large surface area and the low accuracy of pressure gauges allow a small rise in pressure to go undetected.
-sent with Tapatalk 2
Re: $%^&* What the heck did I do now?
And 20psi could very well be normal depending on pump size and the way the plumbing is done. My current DE filter was up there too until I got a smaller pump. Last house was even higher but had in floor pop ups and solar.
Posted from my Droid with Tapatalk ... sorry if my response is short
And 20psi could very well be normal depending on pump size and the way the plumbing is done. My current DE filter was up there too until I got a smaller pump. Last house was even higher but had in floor pop ups and solar.
Posted from my Droid with Tapatalk ... sorry if my response is short
I have a sand filter and I notice a reduction in flow before I notice a rise in pressure. It's not as uncommon as you may think. When I notice a reduction in flow I'll usually see a 1 to 2 psi rise in the pressure. I have a precision 30"-0-30 psi gauge. With a 0-60 psi el-cheapo gauge you likely wouldn't notice a two or three psi rise. So it's not that the pressure isn't rising, it's that it's not being detected by the gauge.