Raymarine ST3000 Owner's Handbook Manual

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Contents

Raymarine ST3000 Owner's Handbook Manual Manual pdf 61 page image

56 ST3000 Wheel Drive Autopilot - Owner’s Handbook5 Commissioning the Wheel Pilot 5.2 Initial sea trialCAUTION:Failure to carry out the sea trial may result in impaired autopilotperformance on some compass headings.When you have checked that the system is operating correctly, youmust complete a short sea trial to calibrate the compass.The wheel pilot has a built-in calibration capability so you canfine-tune it to suit your boat, its steering system and its dynamicsteering characteristics.As supplied from the factory, the autopilot is calibrated to providesafe, stable control for most boats.• Do not attempt to make any permanent changes to therecommended calibration values until you have completed thesea trial.• You must carry out the initial sea trial in conditions of light windand calm water – so you can assess the autopilot’s performancewithout the influence of strong winds or large waves.Note: At any time during the sea trial, you can disengage theclutch lever to return to hand-steering.Before starting the sea trialBefore carrying out the sea trial, you should:• check the calibration settings and, if necessary, reset them to thedefault values (see page 63)• check the installation to make sure that it is not affected by radiotransmissions, engine starting, etc.Calibrating the compassAutomatic compass deviation correctionBy completing the following compass correction procedure, thewheel pilot can correct its own internal fluxgate compass for mostdeviating magnetic fields. You MUST complete the CompassDeviation Correction at the beginning of your sea trial.