Pedrollo Preset Electronic Pressure Switch
Preset is an electronic device ideal for the control and protection of single-phase domestic pumps with power up to 2 HP, in connection with autoclaves for water supply and pres- sure boosting in domestic applications and for residential irrigation systems.
Product Description
Preset activates the pump when opening a faucet reduces system pressure below the operational threshold and turns it off once pressure surpasses the shut-off limit, serving as a modern alternative to conventional mechanical pressure switches.
Preset is equipped with:
- pressure sensor enabling accurate digital control of start and stop pressures from 0.8 to 9 bar;
- display for reading the operating parameters;
- integrated and inspectable non-return valve.
The integrated electronics protect the pump from:
- dry running
- frequent start-ups due to leaks in the system;
- overcurrent
Performance Range
- Running pressure: adjustable from 0.8 to 9 bar (factory setting at 2 bar)
- Cut-off pressure: adjustable from 1 to 9.2 bar(factory setting 3 bar)
- Maximum current: adjustable (factory setting 16 A)
Application Limits
- Liquid temperature up to +40 °C
- Ambient temperature up to +40 °C
- Maximum working pressure: 10 bar
- Protection rating: IP 65
Performance and Safety Standards
The circuit board inside the Preset has passed the most stringent EMC tests for electromagnetic compatibility.
Wetted Components| Pump Body | Cast Iron (Painted) |
| Impellor Case | Cast Iron (Painted) |
| Impellor Case Seal | NBR |
| Motor Shaft Seal | NBR |
| Vanes | Not Present |
| Vane Springs | Not Present |
| Rotor / Gear / Impellor | Brass |
| Shaft Key / Nut | 304 Stainless Steel |
| Motor Shaft | 304 Stainless Steel |
| Bypass Valve Piston | Not Present |
| Bypass Valve Seal | Not Present |
| Bypass Valve Spring | Not Present |
Performance| Voltage / Frequency | 110v, 230v, 415v / 50Hz |
| kW | 0.37-2.2 |
| Amps | |
| RPM | 2900 |
| Duty Cycle | Continuous |
| Cable Length | Not Present |
| Bypass Valve Y/N | N |
| Max Flow | 40 lpm @ 5 m head |
| Discharge Pressure | 9.0 Bar / 130.5 PSI |
| Max Suction Lift (Dry) | None |
| Max Suction Lift (Wet) | 8 m |
| Inlet Fitting | Various, Consult PDF Below |
| Outlet Fitting | Various, Consult PDF Below |
| Max Particle Tolerance | 100 Micron |
| Max Liquid Temp | 90 Celcius |
| Min Liquid Temp | |
| Max Room Temp | 40 Celcius |
| Min Room Temp | |
| Thermal Protection Y/N | Y |
| Max Liquid Viscosity | Water |
| Ingress Protection | IP44 |
For 110v 50Hz, and 60Hz motors please email us for availability and price.
Download Pedrollo Catalogue 50Hz PDF
Download Pedrollo Catalogue 60Hz PDF
