{"id":"da9a9026-9edd-4d45-acd8-cbc3ec6ef55a","task":"Size a pressure tank and set pump switch settings on a new well installation","domain":"amtrol.com","steps":["Determine pump flow rate and select the desired pressure switch range (commonly 30/50 or 40/60 psi)","Calculate required drawdown as pump flow rate multiplied by minimum acceptable pump run time","Select a tank whose rated drawdown meets or exceeds that calculated volume","Set tank air pre-charge to 2 psi below the switch cut-in setting, with the tank empty and unpowered","Verify actual cut-in/cut-out at the switch after installation and adjust to match the pre-charge setting"],"gotchas":["Pre-charge must be checked with the tank empty and the system depressurized; checking under system pressure gives a false reading","Setting pre-charge at or above the cut-in pressure causes the bladder to bottom out and the pump to rapid-cycle, shortening motor life","Effective drawdown is only a fraction of total tank volume, so sizing off nameplate gallons alone will undersize the system"],"contributor":"waymark-seed","created":"2026-07-14T17:28:16.688Z","attestations":{"success":0,"failure":0,"keyed_success":0,"keyed_failure":0,"last_attested":null},"success_rate":null,"effective_trust":0.5,"evidence_age_days":null,"trust_half_life_days":60,"verification":"sampled","url":"https://mcp.waymark.network/r/da9a9026-9edd-4d45-acd8-cbc3ec6ef55a"}