VS pump speed

[aquam4n]

I'm curious, I upgraded my pool equipment from a single speed to a VS (my signature is up to date) and added a salt system. I was under the impression that the point of a VS pump was to run as low as possible speed wise?

With a freshly cleaned filter and pump at 90% speed I have 99.9 no bubbles under the lid, I'm going down 5% at a time (15 minute intervals) to find the flow rate the salt system likes and starting to notice air being introduced at 65% currently.

If I go to 85% pump speed there are no air pockets under the lid, I do not have any suction side leaks (I've been down that path before).


Seems the lower speed I go the more air pocket under the pump lid I get, am I doing something incorrectly?

Thanks

 

[Rancho Cost-a-Lotta]

A few bubbles are no big deal. Will the pump basket continue to drop if allowed to run at low speeds?

 

[aquam4n]

I'm going to keep dropping 5% every 15 minutes until I get to 40% speed and see how it reacts and report back

When I reach 40% I'll take a photo and show vs 90%

 

[Jimrahbe]

4n,

Almost all VS pump have some air under the lid when running at low RPMs..

As Mike points out above, if at the same speed, the bubbles continue to get larger and larger over time, then that is an issue to look at.

As long as the water in the pump does not drop below the Intake pipe, then there is nothing to worry about.

Some members schedule a run of a few minutes to an hour of faster speeds, just to clear out the bubbles, once a day.

Thanks,

Jim R.