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It is currently May 24th, 2013, 4:34 pm
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flyweed
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Post subject: what should my filter pressure be?  Posted: April 19th, 2010, 10:04 am |
Joined: August 3rd, 2009, 9:52 pm
Posts: 332
Location: SW Wisconsin
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I know this is kind of a vague question..but I just want to get an Idea of where I should be sitting on the reading of my pressure gauge.
Pool pump and filter are about 22 feet away from the pool. Same level..plumbed with 1 1/2" PVC pipe. I just started my pump and filter system up yesterday and the pressure gauge is reading 14 PSI. Is this about right, should it be more or less??????
Any insight would be wonderful
Dan
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33' x 52" Swim and Play Inc. PARAGON AGP. Hayward H200 Heater. Hayward Power-Flo LX 1.5hp pump. Sta-Rite Cristal Flo T-210WF Sand Filter. Compu-Chlor 40K SWG
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ntrsandman
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Post subject: Re: what should my filter pressure be? Posted: April 19th, 2010, 12:03 pm |
Joined: July 1st, 2009, 8:12 am
Posts: 101
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Read your gauge after the filter(s) have been cleaned, pump and skimmer baskets cleaned, with system running under normal circumstances. This reading will be "normal" for your pool when everything is clean. As the pressure increases, filter(s) are becoming dirty. Usually a 10 psi increase indicates time to clean.
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16K gallon, Pebble tec, beach entry. Two 1 hp Pentair Whisperflos. One for Paramount MDX2 main drain, Paramount debris canister, and Pentair CCP 520 filter. One for skimmer w/sock and Paramount PCC2000 in floor cleaner. 3/4 hp Pentair Pinnacle for waterfall. Fiberstars fiber optic pool lighting. Aqua-Logic AQL-P-4 control panel with wired remote in the house. SWCG system that is not used. Ultra-Pure Ozonator that is not used.
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flyweed
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Post subject: Re: what should my filter pressure be? Posted: April 19th, 2010, 12:38 pm |
Joined: August 3rd, 2009, 9:52 pm
Posts: 332
Location: SW Wisconsin
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Well I just opened the pool from winterization...so skimmer basket was clean..pump basket was clean and sand filter was backwashed last fall a the close of the pool
So I should assume that the 14 PSI is my normal "clean" pressure, and then I should clean/backwash when I hit about 24 psi??
Dan
_________________
33' x 52" Swim and Play Inc. PARAGON AGP. Hayward H200 Heater. Hayward Power-Flo LX 1.5hp pump. Sta-Rite Cristal Flo T-210WF Sand Filter. Compu-Chlor 40K SWG
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mas985
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Post subject: Re: what should my filter pressure be? Posted: April 19th, 2010, 12:52 pm |
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Joined: May 3rd, 2007, 9:45 am
Posts: 4382
Location: Pleasanton, CA
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Just to keep things in perspective, a 10 PSI rise is 23 feet of additional head loss. I would never wait that long. I know some manufactures recommend that but I would backwash much sooner than that, +4 PSI, unless I had to do it more than once a week.
As for your typical pressure, it depends upon your exact setup.
Do you have multiple suction lines pool to equipment?
Multiple Return lines?
Is everything 1.5" plumbing?
How many return eyeballs and what size?
Does the gauge go to zero when the pump is off?
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Mark
18'x36' 20k gallon plaster/gunite pool, 1/2 HP 2sp pump, Aqualogic PS8 SWCG, 420 sq-ft Cartridge Filter, 450 sq-ft EPDM Solar Panel, 6 jet spa, 1 HP jet pump, 400k BTU NG Heater
Hydraulics 101; Pump Ed 101; Pump Spreadsheets; FSEC Solar Panel Information
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JohnT
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Post subject: Re: what should my filter pressure be? Posted: April 19th, 2010, 2:00 pm |
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Joined: April 4th, 2007, 10:08 am
Posts: 6067
Location: SW Indiana
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mas985 wrote: Just to keep things in perspective, a 10 PSI rise is 23 feet of additional head loss. I would never wait that long. I know some manufactures recommend that but I would backwash much sooner than that, +4 PSI, unless I had to do it more than once a week. I agree with Mark. My flow is way down at 3 or 4psi increase from my normal 17psi. Looking at performance curves tells you that a 23 ft head loss moves the performance of a 2.5HP pump down to that of a 1HP pump in a typical pool setup.
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TFP Moderator
20K Gallon 20X36 Vinyl Inground
Hayward S244T Sand Filter with 1HP Whisperflo Pump. Liquidator C-201 and Solar Heat
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flyweed
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Post subject: Re: what should my filter pressure be? Posted: April 19th, 2010, 3:51 pm |
Joined: August 3rd, 2009, 9:52 pm
Posts: 332
Location: SW Wisconsin
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some more specifics.
1 intake (wide mouth skimmer port)
1 return 1 1/2" return with built in light
line to pump is 22 feet of 1 1/2" pvc
line to pool return is 22ft of 1 1/2" pvc
from sand filter to heater, 2 inch pvc.....from heater to SWG 2 inch pvc...out of SWG cell back to pool 1 1/2" pvc
Nothing else is on return or suction line. I have a pool robot, so no vacuum on any of the lines or anything.
My pressure gauge is new and goes to 0 (zero) when the pump is off.
_________________
33' x 52" Swim and Play Inc. PARAGON AGP. Hayward H200 Heater. Hayward Power-Flo LX 1.5hp pump. Sta-Rite Cristal Flo T-210WF Sand Filter. Compu-Chlor 40K SWG
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mas985
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Post subject: Re: what should my filter pressure be? Posted: April 19th, 2010, 4:01 pm |
| Special Expert |
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Joined: May 3rd, 2007, 9:45 am
Posts: 4382
Location: Pleasanton, CA
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Based upon your equipment/setup, 14 PSI is reasonable and about where it should be.
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Mark
18'x36' 20k gallon plaster/gunite pool, 1/2 HP 2sp pump, Aqualogic PS8 SWCG, 420 sq-ft Cartridge Filter, 450 sq-ft EPDM Solar Panel, 6 jet spa, 1 HP jet pump, 400k BTU NG Heater
Hydraulics 101; Pump Ed 101; Pump Spreadsheets; FSEC Solar Panel Information
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