Tomorrow (Friday) my pool pro is coming to close the pool so I started prepping whatever I can do on my own before he comes. Water temp has reached a good 55 so it’s ready to close. I brushed off and collected all the tree debris and acorns from the solar cover. I figured that later on I’ll vacuum-clean the bottom from any leaves that may have fallen in. Connected the vac line through the skimmer suction opening. Vac was OK and pump was pumping as usual.
Then I added liquid chlorine for shocking and circulated the pool for good 2-3 hours.
Then I started pumping water out using an immersion pump. In order to expedite the process of the partial draining I also started a backwash. Everything worked fine until the pool water level fell below the skimmer entrance level. The pump lost its prime.
I couldn’t get suction at the suction hole at the bottom of the skimmer.
I still need the pump in order to vac-clean the pool bottom. Why did the pump lose prime and what should I do?