No suction when using Backwash, Rinse or Waste

[Chook]

I currently have an in-ground (60,000 litre) concrete pool recently renovated (last 12 months). I have been doing backwashes and rinses all this time and went to vacuum the pool to "waste" and have only just identified that I do not have any suction when doing any of those (backwash, rinse or waste).

When I run the Filter there is suction through the skimmer box and all seems to be functioning well. I have checked the spider valve in the head of the Filter and all seems to be in order i.e. no twists, wear/tear. In addition, the spring related to the lever that changes the filter position appears to be in good working order.

Any thoughts on how water is still being drawn from the pool and expelled without suction? Also how I can achieve suction when vacuuming the pool?

Kind regards

Chook

 

[Jimrahbe]

Chook,

If water is leaving the pool, there has to be suction...

In most pools, there is nothing about selecting backwash, rinse or waste, then has anything to do with the skimmer. Even if your Multiport valve was bad, I can't see how it would effect the skimmer at all.

That said, I have no clue as to what you are seeing..

How about posting a few pics of your whole equipment pad.. Maybe someone here can spot something.

Tell us what all was updated during your renovation.

Thanks,

Jim R.