Hi,
I have a sand based filter, when I switch the spider gasket to backwash mode, I only see dirt in the sight glass when the waste pipe is open, is this normal?
Also, I notice that when in filter mode, the filter jets start off strong, and eventually end up very weak after about 20 minutes. When this happens the pressure gauge increases until 1.5 bar, and stays there, is something wrong?
I have a sand based filter, when I switch the spider gasket to backwash mode, I only see dirt in the sight glass when the waste pipe is open, is this normal?
Also, I notice that when in filter mode, the filter jets start off strong, and eventually end up very weak after about 20 minutes. When this happens the pressure gauge increases until 1.5 bar, and stays there, is something wrong?