Hi everyone, I'm new to the site and would like to get some opinions on the accuracy of my method of measuring flow rate.
What I've done is filled a 5 gallon bucket with pool water and then dropped one end of a vacuum hose that has already been primed with water into the bucket. Then the other end is connect to the skimmer and I time how long it takes to empty the bucket, which took 10 seconds. I did just the opposite on the return at the deep end and it took exactly 10 seconds to fill the same bucket. I was able to repeat this several times and always got the same results. So calculating this out I get 30 gallons per minute.
I'm having to go this route because I do not have much info on the pump. I know the motor is an AO Smith st1202 2hp motor and think the pump is a Hayward Super Pump 1600, but there are no markings on the pump housing. I'm basing this off of the clear basket cover which says H 1600D and the basket markings say Haward 1600m. I can't seem to find any spec info on the Hayward Super Pump 1600 and have a feeling it may not be rated for the 2hp motor that is attached to it. The plumbing is all 1 1/2 Sched 40 pvc which I'm sure is too small and the filter is a Triton TR60.
Lately after starting up the pump the flow at the return seems to weaken after a little while. I've noticed air bubbles in the pump basket and also in the clear view bubble on the sand filter. The pressure also seems to be down on the filter at 10 psi.
I'd be curious to any insight anyone is able to provide.