Why Won’t My SEAFLO SFDP1-030-045-33 Shut Off?
Exact model: SEAFLO SFDP1-030-045-33
Safety: Disconnect the relevant power source and isolate moving, hot or pressurized components before service.
A.
Start with the accessible checks
What this suggests: A SEAFLO 33-series pump that never stops may be unable to reach shutoff pressure because of suction leakage, internal check-valve backflow, a downstream water leak or a defective pressure switch.
What to do
- Close all taps and inspect the whole discharge for hidden leaks; check the suction filter and lines for bubbles and verify adequate inlet feed.
- Test near the pump with a known good short plumbing section to isolate external lines.
Still not fixed? Continue to the next check.
↑ Back to the repair pathsB.
If the problem remains after the first checks
What to do
- If pressure cannot build despite sound plumbing, inspect/replace a defective valve/diaphragm kit matched to the pump.
- If the pump reaches proper pressure but the switch does not open, replace the compatible 45 PSI pressure-switch assembly after testing its operation. Never bridge the switch permanently.
Confirm the repair
Pump shuts off at its intended system pressure and holds with taps closed without continuous motor running.