Brochure: Exhaust Alert System
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Quiet vibration-free performance from today’s high-revving diesels HMI EXHAUST ALERT SYSTEM Sensing overheating in marine exhaust systems One of a series of brochures on products from Halyard 5

HMI EXHAUST ALERT SYSTEM The HMI Exhaust Alert is designed and manufactured in Britain Marine diesel exhaust systems are designed to take temperatures of only 120°C. The exhaust gasses, however, may reach more than 500°C. To cool the gasses, the exhaust depends on a free flow of cooling water from the engine. This flow can be cut off, by a plastic bag or seaweed being sucked into the intake, or by a problem with the water pump. The exhaust temperature will rise immediately to around 450°Cr the exhaust will overheat and may be seriously damaged. In most situations Exhaust Alert will warn you...

the engine space. This compact bulkhead in the engine space. Wires from the sensors and the helm display connect to it. It connects to the power supply (which must be live only when the ignition is turned on). A fuse that the system can be disarmed. Twin Engines Alert is available for single engines, twin engines, or for twin engine craft with generato No problem. Just order the unit with an extra helm display and wire this in. alarm system must measure temperature inside the exhaust system to be effective. Sensors exhaust cannot respond quickly as they must wait for the heat to work...

whole exhaust? Exhaust Alert will normally spot trouble before serious damage occurs to quality exhaust hose system. Plastic or polypropylene components will not be protected as their melt point is too low. Will it protect my engine? The HMI Exhaust Alert is designed to protect only the exhaust. The system should not be regarded as an engine protection device, although it may beat the engine temperature sensors when the engine is cold. The HMI Exhaust Alert is designed for use with diesel inboard engines rubber hose exhaust systems. It cannot normally be used with inboard/outboard engines...