Hi all , I am new on this.
When the contractors closed it i didn't have the chance to see or to ask them what they did. Now I want to open the swimming pool by myself. I realized they unplugged 4 bolts from the pump, loosen the clamp that holds the valve to the filter tank and removed the manometer.
What I have done:
Retired, washed and stocked the cover
Added the shock liquid to the water, water seems not dirty
I have put all the 4 bolts in the pump.
I have Tighten the clamp
I have put the manometer
Everything seems ready to be started, just i feel chicken because the handbook says it is dangerous if there is compressed air in the tank, how can i know?, what do i have to do?