Instruction Manual for Seaflo 02-Series Float Switch

Quick guide from the manual

The Seaflo 02-Series float switch is designed for automatic control of bilge pumps in marine environments. This document outlines the correct installation, wiring, and safety requirements to ensure reliable operation and prevent pump failure or electrical hazards.

Safety and installation requirements

• The switch must be mounted at or above the pump base level to ensure positive shut-off.
• All mounting holes must be sealed with marine-grade sealant to prevent water intrusion.
• Keep all wire connections above the highest water level and use connectors with marine-grade sealant to prevent wire corrosion.
• Always install a proper size fuse to prevent damage and fire hazards.
• This unit is designed for fresh water and salt water only. Do not use with hazardous, caustic, or corrosive materials.
• Do not use with 110V AC power.

Installation

Ensure the switch is mounted on a flat surface. The device should be positioned so that the float can move freely without obstruction. Secure the base using appropriate screws, ensuring the mounting surface is stable. The switch should be installed within a maximum angle of 5 degrees to ensure proper activation.

Wire connection

Connect the switch in series with the positive power lead of the bilge pump. Use the provided wiring diagram to ensure the brown wire is connected to the pump and the black wire is connected to the negative terminal of the battery. Ensure all connections are waterproof and protected from the elements.

Work principle

The switch operates based on water level. It activates the pump when the water level reaches approximately 60mm and turns it off when the water level drops to approximately 30mm.

Testing the float switch

To test the unit, manually lift the float to verify that the pump activates. Ensure the float moves smoothly without catching on any debris or mounting hardware.