Blocked or damaged grids would probably raise the filter pressure. But when the pump is running can you feel any flow out of the returns? Do you have a check valves on the suction side of the plumbing?
Re: Low to Zero Pressure in Filter
Blocked or damaged grids would probably raise the filter pressure. But when the pump is running can you feel any flow out of the returns? Do you have a check valves on the suction side of the plumbing?
Mark
Hydraulics 101; Pump Ed 101; Pump/Pool Spreadsheets; Pump Run Time Study; DIY Acid Dosing; DIY Cover Roller
18'x36' 20k plaster, MaxFlo SP2303VSP, Aqualogic PS8 SWCG, 420 sq-ft Cartridge, Solar, 6 jet spa, 1 HP jet pump, 400k BTU NG Heater
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