The Sea Strainer Alarm System Alarms Instantly if the Sea Strainer Blocks

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.

Choosing the System

The Sea Strainer Alarmwith a Helm Display Choose between one, two or three sensors. Tell us the engine type and model. Tell us the inner diameter of the raw water pipe from the sea strainer to the pump. We supply the sensors (each with 4 m of cable), the control box, and the helm display unit with 10 m cable. The only optional extra is the 120 dB(a) siren to supplement the simple buzzer in the helm display. Stainless hose clips are not included as need varies with hose outside diameter.

The Sea Strainer Alarmwith OEM Control Box

The OEM system is designed for customers wishing to build warning lights into the existing dash. You tell us the engine type and model and the inner diameter of the raw water pipe from sea strainer to pump. We supply the sensor (with 4 m cable) and the control box. The customer supplies lights, and the unit accepts 12 V or 24 V. The only optional extra is the 120 dB(a) siren. Stainless hose clips are not included as need varies with hose outside diameter.

1000 Series System - Suitable for hose connection of up to 3/4” - 12 or 24 Volts

System with Helm Display:Complete system with control box, helm display and 3/4” BSP sensor unit.

OEM System without Helm Display:Complete system with OEM control box and 3/4” BSP sensor unit. This unit is suitable for a bespoke helm display installation.

Part No. Description Part No. DescriptionAS1100 To suit single engine AS1500 To suit single engine

AS1200 To suit twin engine AS1600 To suit twin engine

AS1300 To suit triple engine AS1700 To suit triple engine

AS1001 Tails to suit 1/2” - 13 mm hose

AS1005 Tails to suit 5/8” - 16 mm hose

AS1010 Tails to suit 3/4” - 20 mm hose

2000 Series System - Suitable for hose connection of up to 1” - 12 or 24 Volts

System with Helm Display:Complete system with control box, helm display and 1” BSP sensor unit.

OEM System without Helm Display:Complete system with OEM control box and 1” BSP sensor unit. This unit is suitable for a bespoke helm display installation.

Part No. Description Part No. DescriptionAS2100 To suit single engine AS2500 To suit single engine

AS2200 To suit twin engine AS2600 To suit twin engine

AS2300 To suit triple engine AS2700 To suit triple engine

AS2001 Tails to suit 1” - 25 mm hose

AS2005 Tails to suit 11/4” - 32 mm hose

3000 Series System - Suitable for hose connection of up to 11/2” - 12 or 24 Volts

System with Helm Display:Complete system with control box, helm display and 11/2” BSP sensor unit.

OEM System without Helm Display:Complete system with OEM control box and 11/2” BSP sensor unit. This unit is suitable for a bespoke helm display installation.

Part No. Description Part No. DescriptionAS3100 To suit single engine AS3500 To suit single engine

AS3200 To suit twin engine AS3600 To suit twin engine

AS3300 To suit triple engine AS3700 To suit triple engine

AS3001 Tails to suit 11/2” - 38 mm hose

Additional InformationAn additional helm display can be purchased if required.

For single engine systems it is possible to connect a Sea Strainer Alarm and Exhaust Alert to one control box, reducing the cost of having both systems installed.A 120 dB(a) siren is available with this system - Part No. AS777

Sea Strainer Alarm System

Phone and ask us if you’d like more help. We’re happy to talk through the details of any installation.

HALYARD (MARINE & INDUSTRIAL) LIMITEDWhaddon Business Park, Southampton Road, Whaddon,Salisbury SP5 3HF, United Kingdom.Telephone: +44 (0)1722 710922 Fax: +44 (0)1722 710975E-mail: techhelp@halyard.eu.comwww.halyard.eu.com

T2063 12/06

All products in this brochure meet the requirements of the Recreational Craft Directive.

Literature Code HMI 115/01 © Halyard (M & I) Limited 2006.

We must reserve the right to change specifications without prior notice.

Halyard holds ISO9001Quality Assurance.

SEA STRAINER ALARMTHE FINAL ANSWER TO BLOCKED SEA STRAINERS

One of a series of brochures on products from Halyard8