SEA STRAINER ALARM

The final answer to blocked sea strainers
Halyard’s Sea Strainer Alarm alerts you in micro-seconds if the raw water flow to the engine cooling pump is seriously reduced. Or if you start the engine with the seacocks turned off.

Why?
Marine engines are cooled by raw sea water, drawn in through the bottom of the hull and pumped through the heat exchanger. Block this vital supply and problems follow immediately. The water pump impeller fails almost instantly and engine overheating follows. In extreme situations really serious damage can be done. Halyard’s new Sea Strainer Alarm buys you precious seconds to deal with the problem before any damage occurs. Impede the flow of water through the strainer, or start the engine with the seacocks turned off, and the Sea Strainer Alarm tells you instantly.

How?
The Sea Strainer Alarm spots the restricted water flow in the hose between the strainer and the pump. Too great a restriction and the sensor loses current. The control box instantly picks this up, and the alarm system is set in train. Halyard has taken three years to research the Sea Strainer Alarm, studying the flow between sea strainer and pumps for engines of over a hundred different sizes and types. With the aid of a significant EC grant, we’ve plotted these to ensure we can specify a sensor which alarms immediately the water flow is seriously impeded – but doesn’t alarm unnecessarily. All you need tell us are the engine size and the inside diameter of the pipe from the sea strainer to the engine pump.

Fitting
The sea strainer alarm fits neatly into the water supply between the sea strainer and the engine raw water pump. The unit is supplied complete with fittings for the appropriate hose diameter. You simply cut the supply hose, fit the “T” piece into the hose and secure with hose clips. You then connect the sensor in the top of the “T” piece to the control box (up to 3 sensors can be connected, covering boats with single or twin engines and a generator). The control box requires a 12 V or 24 V supply.You then connect the simple helm display to the control box. If you prefer, you can fit the OEM control box, allowing you to incorporate your own dashboard lights instead of the standard helm display. You can also connect an optional alarm siren, supplementing the simple buzzer supplied in the helm display.