Low Flow - Aquapure 1400

[Munchenman]

Just completed our pool and started it up for the first time this weekend. Have a Jandy eFlow pump (var speed) 1.5hp,Jandy cartridge filter, Lxi heater and Aquapure 1400 Cl generator.

As suggested by the pool installer, put the system on Boost to shock the pool at startup. Throughout the 24 hr cycle, I got intermittent low flow messages. Tried using the var. speed adjustment and got flow back when the pump was cycling at 3000+rpm. When it went to a lower level, got a low flow. Still getting intermittent low flow messages and cell reversing message. Salinitiy is 3.0, temp 80F.

Chlorine levels are ok at 1-3 ppm but I concerned that I will need to run the pump at above 3000 rpm all the time to generate the required amount of Cl. I was hoping to be able to cycle it down part of the day to save on energy.

Any thoughts about this problem? Is this a pump issue or a cell/sensor issue? I am getting good flow to the pool at lower rpm's but am thinking the flow isn't sufficient for the min. cell requirements.

Any help/comments would be appreciated.

[polyvue]

Just completed our pool and started it up for the first time this weekend. Have a Jandy eFlow pump (var speed) 1.5hp,Jandy cartridge filter, Lxi heater and Aquapure 1400 Cl generator.

As suggested by the pool installer, put the system on Boost to shock the pool at startup. Throughout the 24 hr cycle, I got intermittent low flow messages. Tried using the var. speed adjustment and got flow back when the pump was cycling at 3000+rpm. When it went to a lower level, got a low flow. Still getting intermittent low flow messages and cell reversing message. Salinitiy is 3.0, temp 80F.

Chlorine levels are ok at 1-3 ppm but I concerned that I will need to run the pump at above 3000 rpm all the time to generate the required amount of Cl. I was hoping to be able to cycle it down part of the day to save on energy.

Any thoughts about this problem? Is this a pump issue or a cell/sensor issue? I am getting good flow to the pool at lower rpm's but am thinking the flow isn't sufficient for the min. cell requirements.

SWGs are not great at shocking the pool. You'll have much more success using liquid chlorine or 6% bleach. How much CYA (cyanuric acid, stablizer) is in the water?

Others more familiar with the variable speed eFlow pump may be able to assist you in tweaking it so that you can avoid the low-flow condition.

[Pool Clown]

First, Boost, and Shock are two different things, and the generator cannot shock. The theory behind a shock is to raise the Cl level quickly to "Shock" the algae with Cl. Boost will raise the level to perhaps the same level (depending on run time), but does this over a much longer time thus not getting the shock effect needed to properly battle an algae condition.

It may be that you are not getting the flow required by the generator due to some sort of restriction may it be a dirty filter, long and or high solar run, or something else. Is it possible that all your water is not flowing thru the cell? Perhaps a by-pass for another reason and is affecting the flow thru the cell? Sometimes a cell will be plumbed in downstream of the pool/ spa diverter so when in spa, the generator doesn't generate too much Cl while in the spa.

A picture of the cell and a view of the above ground plumbing (at the equipment) would help.

[Munchenman]

First, Boost, and Shock are two different things, and the generator cannot shock. The theory behind a shock is to raise the Cl level quickly to "Shock" the algae with Cl. Boost will raise the level to perhaps the same level (depending on run time), but does this over a much longer time thus not getting the shock effect needed to properly battle an algae condition.

It may be that you are not getting the flow required by the generator due to some sort of restriction may it be a dirty filter, long and or high solar run, or something else. Is it possible that all your water is not flowing thru the cell? Perhaps a by-pass for another reason and is affecting the flow thru the cell? Sometimes a cell will be plumbed in downstream of the pool/ spa diverter so when in spa, the generator doesn't generate too much Cl while in the spa.

A picture of the cell and a view of the above ground plumbing (at the equipment) would help.

I'll get a picture of the plumbing job....I think this is likely the issue because my install is on a temporary pad until I build my future cabana. There is one exit out of the cell with no diversion of flow back into the pool. From the pump to the cell, however, there are alot of 90 degree elbows (I think 8) between the pump and the exit of the generator. My fluid dynamics understanding isn't great but I do know that there is a pressure loss for every 90 degree that is installed so I think I am getting significant pressure loss due to the setup/plumbing of the equipment.

When filled, the water was slightly green in the deep end but has now cleared. I have added stabilizer so levels are now ok. I do need to reduce ph (have added 2L of muriatic acid already to 78,000 L pool. Took water sample in today and everything was fine but ph remained high so will adjust this evening.

On the topic of shocking, does it need to be done immediately on startup? When will I know it is time to do it?

Thanks for the feedback and I will post a pic of the plumbing asap.

[Pool Clown]

On the topic of shocking, does it need to be done immediately on startup? When will I know it is time to do it?

Shock at start up may, or may not be warranted.

You will know if the water begins to look a little milky, or you begin to get a little green on the walls.

You should not start the Cl generator at start up yet as you should not have salt in the pool. You will need to initially balance the water first. Some manufacturers say three weeks till salt goes in.