INSTALLATION 8. OPERATING INSTRUCTIONS
Contents
1. TILLER PIN If the push rod sits directly onto the centre line of the tiller drill a i 6mm hole insert the stainless steel tiller pin and secure with epoxy resin If the push rod is too high too low or reguires extension refer to the paragraph on installation accessories When secured the shoulder of the tiller pin should project 1 12 5mm above the tiller 1 INSTALLATION Cont d 5 POWER CONNECTION A waterproof plug and socket is provided The socket should be installed as close as practicable to the automatic pilot and the unit s own power lead shortened to suit Connect wires to plug and socket The BROWN LEAD is POSITIVE and the BLUE LEAD is NEGATIVE The unit is protected by a 5amp fuse located in a fuseholder on the underside of the unit If the unit is accidentally connected to the ship with reverse polarity then the fuse will blow A spare is provided for replacement INSTALLATION ACCESSORIES 6 PUSH ROD ENTENSIONS If due to the width of the cockpit the most convenient or the strongest siting position for the rowlock cup is further than 19 480mm from the centre of the tiller arm extension rods can be added to the push rod These are available in six lengths 30mm 1 3 16 60mm 22 90mm 34 120mm 43 150mm 6 and 300mm 12 The push rod extension is simply fitted by unscrewing the black end plug screwing in the extension rod and replacing the end cap onto the end of the push rod extens2. TILLERPILOT 1600 amp 2500 INSTALLATION amp OPERATING INSTRUCTIONS Pe ENa INTRODUCTION Navico Tillerpilots 1600 and 2500 have been developed after extensive sea trials in varying types of craft and conditions at sea The eguipment incorporates many unigue features for improved performance and trouble free operation Marine grade materials and high spec components are used throughout A tillerpilot is a valuable crew member and we therefore recommend storage in a dry environment when not in use to prolong optimum performance and long life Both models are totally self contained automatic tiller pilots and incorporate a motor electronic servo circuitry gearing push rod and novel micro electronic compass The difference between the 1600 and 2500 is in the linear drive mechanism the latter being an extremely high efficiency recirculatin ballscrew offering greater thrust and faster actuator travel from lock to lock Both autopilots have a stainless steel rowlock which slots into a brass socket provided The brass socket should be installed permanently fixed with grp resin or epoxy resin 19 480mm to starboard of the cockpit centreline See separate paragraph for port hand installation When mounted in the operational position ensure that the automatic pilot is horizontal and at right angles to the tiller when it is amidships The push rod is connected to the tiller via a stainless steel ball headed pin The pin should b
3. a sandbank Happy Cruising SERVICE 17 Other than the occasional smear of vaseline over the power supply plug and around the windvane socket there is no need for servicing All moving parts are lubricated for life at the time of manufacture Tillerpilot is guaranteed for 12 months from date of retail sale If it is ever necessary to have the unit repaired return it carriage paid in its original packing case to the agent in the ocuntry of original purchase with a copy of the receipted invoice showing date and place of purchase IMPORTANT Special tools and test eguipment are reguired to set up and align both compass and feedback system Warranty will be invalid if the outer case is opened by any person other than an appointed service engineer Navico operate a policy of continual development and reserve the right to alter end and improve their range of products
4. d be allowed to familiarize oneself with the effect of all controls Use of the Navico Tillerpilots 1600 and 2500 is straightforward i Manually steer the desired course ii Align compass dial with ship s heading iii Rotate mode switch from off to SET position iv Align actuator end cap over Tillerpilot pin by small movements of the compass dial clockwise retracts actuator anti clockwise extends actuator v Push actuator end cap onto the tiller pin and select desired rudder ratio position 1 2 3 or 4 Small changes of desired course may be made using the compass dial However it is recommended to take up new headings over 40 difference by repeating the operating procedure This allows correct weather helm to be applied instantaneously OPERATION Cont d Once grasped this procedure will become second nature However it should be noted that violent movements of the compass dial by hand can result in the actuator over shooting In the SET mode the actuator will settle in a position of no movement when aligned to the ship s heading This position can be moved anywhere along the length of actuator stroke Rotation of the compass dial causes the actuator to move returning it to the original position stops 10 This is a very useful function as it enables the autopilot rudder reference signal to include the weatherhelm reguired to balance any offsets The sea state control also functions whilst the Tiller
5. e sited along the centreline 18 460mm from the rudder stock or pintle Position the system a minimum of 30 750mm from the yacht s steering compass Porthand Installation If a more rigid site for fixing the rowlock pin is on the port side or it the tiller configuration is such that it impedes full travel of the actuator arm when mounted to starboard porthand installation can simply be carried out by rotating the label on top of the compass through 180 and when adhere securely when replaced CAUTION An automatic pilot is a very valuable extra member of It does not however automatically avoid danger Always keep a vigilant lookout TION PROCEDURE 1 Take measurements and mark preferred position as shown in Fig l 2 Ensure that the automatic pilot will be horizontal when in the operational position and that the push rod reaches the centre of the tiller If not refer to the paragraph on installation accessories 3 ROWLOCK CUP On the starboard side of the cockpit or port side if the compass label has been rotated through 180 drill a 12 7mm hole in the side of the cockpit Ensure that the thickness of the cockpit is at least the same depth as the rowlock socket if not reinforce the underside with hard wood or marine grade plywood Finally fix the rowlock socket in place with epoxy resin NOTE Tillerpilots are very powerful devices and very high loads can be exerted therefore a very strong bond is essential 4
6. elmsman automatically counteracts this by applying sufficient weatherhelm to maintain the desired heading Although Navico Tillerpilots incorporate an automatic weatherhelm circuit this has been designed to compensate for gradual changes to standing helm that typically occur during a passage due to varying wind conditions This automatic compensation circuit may take approximately one minute to restore the yacht onto its original heading after a change in helm balance has occured To enable your autopilot to steer the straightest course especially in gusting conditions it is important to pay careful attention to sail balance This may necessitate reefing the mainsail more than you would expect to when sailing manually The power and speed of the Tillerpilot 2500 should be capable of handling sensibly canvassed yachts up to 14m in all but the worst of conditions Caution is however given when running down wind especially in a following or breaking sea Sailing by the lee or with the wind dead astern should be avoided in extreme conditions as your automatic pilot cannot anticipate the size or power behind the next wave Whenever possible especially in bad weather sail with the wind 30 towards the be Sailing under autopilot is a most enjoyable experience especially on long passages Do not however fall into a false sense of security Always keep a vigilant look out Your Tillerpilot does not automatically avoid other shipping or
7. esults in oversteering and a pronounced S shape course CONTROLS Cont d 10 11 12 Sea State This control located next to the compass dial adjusts a deadband which prevents over active performance of the autopilot and hence conserves battery power This is set according to prevailing weather conditions Fully anti clockwise is for the roughest of seas fully clockwise is for calm weather Periodic adjustments to this control may be necessary as conditions change on a passage Compass Dial Rotatable through 540 13 turns this is used to align the autopilot onto the ship s heading It should be noted that due to magnetic deviation a discrepancy between the autopilot s and ship s compass may exist Slight discrepancies between the two are of no significant importance and once aligned to the ship s heading the autopilot will mainta a good course The compass dial on top of the Tillerpilot should be aligned approximately with north of the ship s steering compass Weather Helm A very important feature of Navico Tillerpilots which differentiates them from other autopilots at corresponding prices is that they incorporate automatic application of weather helm This ensures that the set course will be maintained irrespective of change in balance of the yacht that may occur during the course of a passage OPERATION 13 It is suggested that sea trials be carried out in calm uncongested waters A short time shoul
8. ion 7 TILLER ATTACHMENT PEDESTAL MOUNTS On vessels where the tiller height is not adjustable and the height of the automatic pilot requires raising or it is preferred to lower the mounting attachment on the tiller the following two types of installation accessory are available Pedestals are manufactured in three sizes 30mm 60mm and 90mm Tiller brackets are manufactured in four sizes 30mm 60mm 90mm and 120mm CANTILEVER BRACKET A Cantilever bracket is also available for mounting on side of cockpit 135 240mm Tiller Bracket Pedestal Mountings CONTROLS 8 Navico Tillerpilots have a compass dial plus two basic controls a mode rudder ratio switch and a variable sea state knob Moderate 9 Mode Rudder Ratio This switch located next to the Windvane socket is positioned at SET to facilitate alignment of autopilot compass with ship s head and to position actuator end cap over tiller pin When operating in the autopilot mode one of four rudder ratios amount of rudder movement given to compensate for a fixed amount of off course error can be selected Generally the same setting is used most of the time this setting being found by sea trials but on occasion it may be necessary to increase the rudder movement NOTE The effect of too little rudder ratio can be observed by the vessel being predominantly knocked off course to one side and taking a long time to return to desired heading Too much rudder ratio r
9. pilot is in the SET mode and controls the width of deadband for the actuator to settle in It is important to position the sea state control deadband to suit prevailing weather conditions when initialising Tillerpilot into the SET mode WINDVANE 14 For long windward passages a windvane is a great asset A socket with rubber bung is fitted to accept an optional windvane attachment The windvane is purely electronic and reguires no complicated cords to operate the feedback mechanism Ask your dealer for further information When the windvane is not in use always ensure that the rubber bung is in position to prevent ingress of moisture REMOTE CONTROL 15 An optional hand remote unit is available which also plugs into the windvane socket This allows port or starboard helm to be applied from a distance of 7 metres A very useful accessory when negotiating moorings or a harbour entrance HINTS UNDER SAIL 16 For a comfortable and fast passage it is always recommended to pay careful attention to sail trim Your Tillerpilot will enable you to attend to this task especially when sailing single handed Sailing your vessel badly out of balance will result in your automatic pilot having to work unnecessarily hard thereby causing excessive drain on your batteries HINTS UNDER SAIL Cont d If your yacht is sailing out of balance in gusting conditions she may luff up suddenly to windward When sailing manually the h
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