Water Supply Systems · Well Systems
Pressure Switch
An automatic control device that turns the well pump on and off based on water pressure in the system. Typically set to cut-in at 40 PSI and cut-out at 60 PSI for residential systems. Prevents pump damage from dry running and maintains consistent water pressure. Available in single-pole and double-pole configurations. Includes a pressure sensing mechanism and electrical contacts.
Common symptoms
- Pump not starting
- Pump not stopping
- Erratic pressure
- Frequent cycling
Common repairs
- Switch adjustment
- Contact cleaning
- Switch replacement
- Pressure sensing line repair
Safety note
⚡ SAFETY: Electrical component. Always turn off power at breaker before adjustment or replacement. Incorrect settings can damage pump or cause system failure. Use proper electrical safety procedures.
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