Fonctionnement et refoulement de la pompe
Point critiqueSump pump must activate automatically, discharge water away from foundation, and have a check valve to prevent backflow.
Norme
Sump pump must activate automatically, discharge water away from foundation, and have a check valve to prevent backflow.
Comment vérifier
1. Pour water into the sump pit — pump should activate automatically when water reaches float level
2. Listen to pump operation — should run smoothly without grinding or rattling
3. Check discharge pipe — must exit at least 6 feet from foundation, not into sewer
4. Verify check valve on discharge line (prevents water from flowing back into pit when pump stops)
5. Check for battery backup pump (critical for power outage during storms)
6. Verify pit cover is sealed (prevents radon, moisture, and odors)
7. Check that pump power cord is plugged into a GFCI outlet
8. Test backup pump (if battery backup: disconnect primary power and test)
Problèmes fréquents
- Pump doesn't activate (stuck float switch — basement floods)
- No check valve (water flows back into pit — pump cycles constantly)
- Discharge too close to foundation (water returns to perimeter drain)
- No battery backup (pump useless during power outage — exactly when you need it most)
- Pit not covered (radon, moisture, odor entry)
- Pump worn out (strange noises indicate impending failure)
- Discharge into sewer (may be illegal, overloads system)