We've just bought a new place, that came with a swamp green 11x5m pool.
After some research I've worked out it came with
- a poolrite s1800 filter box with broken basket
- a seized main pump (Super II - 1.5 HP (SII411) | Hayward Pool Australia)
- an old-ish hayward 715 filter with probably leaky spider gasket and siezed pressure guage
- apparently functional zodiac chlorinator
- a hacked on haywayrd booster pump via 3/4in fittings (Booster Pump | Hayward Pool Australia). Note this one has no basket built in.
- some tired valves & crazy plumbing
To get things going I had to replace the original hayward pump with an 800w (~1hp) cheapo pump I had lying around that I used to use at a different place as a solar heating circuit pump.
After running things a few times I worked out some interesting aspects of the plumbing
- the new pump doesn't seem to pull hard enough to allow for creepy crawleys or similar to operate properly. I wonder if this is because of the crazy plumbing, and or potentially obstructive booster pump.
- the booster pump doesn't really seem to help the main pump as it will suck from the pool.
- The booster pump will suck from an outlet in some circumstances (especially if the main pump isnt running) as it is easier than pulling through the filter
- whoever did it added far more 90deg bends than necessary and created unmaintainable plumbing due to fittings being butted up against each other.
- The filter will pump dirty water into the pool sometimes if one outlet isn't blocked by hand (I think spider gasket is gone?)
- The main pump valve (Jandy??) is very stiff and doesn't seal properly. Not sure if this can be rebuilt in situ (its below water line)
- there is a hole at the bottom of the skimmer box that I cant seem to work out the purpose of. No suction comes from there.
The pool was full of silt and leaves and has taken about 2 weeks of cleaning to be able to see the bottom. I had to use pool robots many many many times with silt filters as I couldn't get enough suction for normal pump powered devices.
Questions
- can anyone suggest why the booster pump is installed the way it is? Running 40mm into 3/4 pipe seems crazy.
- is there a way I can effectively replumb the booster to get more suction without causing issues due to lack of pump filter basket?
- Would the booster assist in suction if plumbed in serial after the main pump with a booster bypass circuit with checkvalve?
- The filter is now reading ~50kpa under use with new pressure gauge. Is that ok?
- What is the purpose of the valve on the left of the diagram?
After some research I've worked out it came with
- a poolrite s1800 filter box with broken basket
- a seized main pump (Super II - 1.5 HP (SII411) | Hayward Pool Australia)
- an old-ish hayward 715 filter with probably leaky spider gasket and siezed pressure guage
- apparently functional zodiac chlorinator
- a hacked on haywayrd booster pump via 3/4in fittings (Booster Pump | Hayward Pool Australia). Note this one has no basket built in.
- some tired valves & crazy plumbing
To get things going I had to replace the original hayward pump with an 800w (~1hp) cheapo pump I had lying around that I used to use at a different place as a solar heating circuit pump.
After running things a few times I worked out some interesting aspects of the plumbing
- the new pump doesn't seem to pull hard enough to allow for creepy crawleys or similar to operate properly. I wonder if this is because of the crazy plumbing, and or potentially obstructive booster pump.
- the booster pump doesn't really seem to help the main pump as it will suck from the pool.
- The booster pump will suck from an outlet in some circumstances (especially if the main pump isnt running) as it is easier than pulling through the filter
- whoever did it added far more 90deg bends than necessary and created unmaintainable plumbing due to fittings being butted up against each other.
- The filter will pump dirty water into the pool sometimes if one outlet isn't blocked by hand (I think spider gasket is gone?)
- The main pump valve (Jandy??) is very stiff and doesn't seal properly. Not sure if this can be rebuilt in situ (its below water line)
- there is a hole at the bottom of the skimmer box that I cant seem to work out the purpose of. No suction comes from there.
The pool was full of silt and leaves and has taken about 2 weeks of cleaning to be able to see the bottom. I had to use pool robots many many many times with silt filters as I couldn't get enough suction for normal pump powered devices.
Questions
- can anyone suggest why the booster pump is installed the way it is? Running 40mm into 3/4 pipe seems crazy.
- is there a way I can effectively replumb the booster to get more suction without causing issues due to lack of pump filter basket?
- Would the booster assist in suction if plumbed in serial after the main pump with a booster bypass circuit with checkvalve?
- The filter is now reading ~50kpa under use with new pressure gauge. Is that ok?
- What is the purpose of the valve on the left of the diagram?
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