i have a skimmer and two floor drains- i pulled the winterizing plugs from each of the drains that the previous owner had installed when they shut the pool down.
the two drains are connected so i put the vacuum hose into the skimmer return and then put the other end into the drain- the water pressure was pulling pretty hard from the other side- and did it from the other side also- so far so good.
i then took off the connecting valve on the other end where it T's into the skimmer return line and there were no plugs or impediments i could see- so finally i turned on the pump and it doesn't seem to be pulling at all from the floor drain-
i am completely flummoxed on this one.
I do have one of those pressure alarms installed after the shutoff valve before the connecting T- i thought perhaps that was the culprit but when i turn the Directional valve so that it is pulling 100% from the floor drain- it pulls all the water out of the piping and the pressure in the alarm valve rises as my pump dries out the line.
when i turn the directional valve so its 100% skimmer- it pulls hard from the skimmer- when set at 50/50 - it still pulls the same on the skimmer- its like there is some kind of blockage between my bottom drains and the pump....
i'm not even quite sure how to tousle shoot this.
anyone have any suggestions???
ps.... there are two plugs on the base of each drain but i am working under the assumption that they drain into the soil underneath.... anyone think they could be the return lines by chance??