F28 SERIES
Features
- Four integrated timers
- Simple plug in installation
- No metal parts in contact with water
- Choice of 256 run & stop cycles
- Suits any pipe size 25mm or larger
- Directly controls motors to 3.75 / 5hp
- Automatic override on start up
- Automatically ignores flow fluctuations
- Indicator lights for all functions
- Tough reliable proven construction
- 20 Bar (300psi) pressure rating
- Weatherproof housing IP67
General description
The F28 quad timer flow switch is a protection and control device for pumps. It includes four integrated electronic
timers that can be set to automatically start and stop a pump at predetermined intervals. For example, the F28 can
be set to automatically pump water to a tank for a period of time, then stop and wait for a preset time and then
repeat the process endlessly, all the while protecting the pump should it run out of water. If the pump does run
out of water, the F28 will automatically shut it down and can be set to simply remain off until attended to, or to
automatically restart and attempt to recover flow after waiting for a settable time.
Applications
Loss of flow protection for pumps
Control constant flow systems
Maintain pressure in pipework
Control automatic tank filling systems
Loss of prime protection for bore pumps
Auto cyclic pumping of low yield bores
Data Sheets
Wiring Diagrams
- Update shortly
Paddle trimming calculator
F27 Time delay flow switch
- Directly control pumps up to 3.75kW or 5HP
- Dry run protection for bore pumps
- Dry run protection for pressure systems
- Inbuilt start-up timer
- Automatic run-on timer
- No metal parts in contact with liquids
- 240V, 24VAC and DC models available
- Indicator LED’s for all functions
- Reliable proven construction
- Weatherproof construction
- Suits pipes 25mm and above
- 18 Bar (260 PSI) Pressure rating
- Stainless steel models available
Description
The F27 time delay flow switches are paddle flow switches with built-in digital timers that override the off state
of the flow switch and allow a pump to start in spite of an initial lack of flow. They also have adjustable run-on
timers that let the pump ignore minor flow interruptions while still being fully protected against running dry.
More Information
Wiring Diagrams
- F27 Pressure system layout (PDF)
- F27 Basic pressure system circuit (PDF)
- F27 Switched pressure system layout (PDF)
- F25 Pressure system circiut (PDF)
- F27TD/F30TD Terminal Markings
AutoCAD Drawing
Paddle trimming calculator