NASA Marine Cruiser Compass Installation And User Instructions Manual Download | Manualshive

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Summary of Contents for Cruiser Compass

Page 1: ...OULTON ROAD STEVENAGE HERTS SG1 4QG ENGLAND 01438 354033 MARINE INSTRUMENTS Cruiser INSTALLTATION AND CONTEMPORARY STYLED INSTRUMENTS FOR CABIN OR COCKPIT MOUNTING USER INSTRUCTIONS for LOG DEPTH COMPASS RoHS 2002 95 EC ...

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Page 3: ...lly bonded to a tough plastic To keep it looking good clean only with a damp cloth Do not use abrasive cleaners or solvents INSTALLING THE DISPLAY 2 Cruiser instruments are waterproof when panel mounted and are designed for open cockpit mounting Select a convenient position for the display on a panel or bulk head The site must be flat and the cavity behind the panel must remain dry at all times Th...

Page 4: ...bre The In Hull Kit is available direct from NASA Marine or your local chandler Whichever is selected the best location still has to be found Select a position below the water level where the transducer will point substanti ally towards the sea bed and where the transducer and cable are kept well clear of interference generating equipment This position should be well clear of large masses of bubbl...

Page 5: ...y and the red wire to the positive via a 1 4 amp fuse The red wire of the alarm is also connected to the positive supply whilst the black wire connects to the green wire from the display unit The alarm is not watertight and must be mounted in a protected position Plug the transducer into the socket on the display unit 3 4 SOUNDER OPERATION Various operational parameters need to be set into the mem...

Page 6: ...reases The point at which the gain starts to rise is called the sensitivity threshold The sensitivity of the unit at depths below the sensitivity threshold will be considerably reduced whilst above the sensitivity threshold the unit repidly becomes more sensitive with increasing depth The sensitivity threshold is factory enter to 0 0 metres To view the sensitivity threshold press ENTER The value c...

Page 7: ...re the hull is of constant thickness under the skin fitting flange so the nut will fit squarely against the hull The paddle wheel should be installed at a point in the hull where 1 It is immersed at all attitudes under power or sail 2 The blades of the paddle wheel are presented with a smooth flow of water corresponding to the vessel s speed through the water On displacement hulls this is usually ...

Page 8: ...he threads to seal the hull and to hold the nut securely in place The nut has a groove on its underside which should also be filled with silicone From the outside of the hull push the housing into the mounting hole using a twisting motion to squeeze out excess sealant With someone outside holding the skin fitting in position from the inside apply a 2mm thick layer of sealant around the hole equal ...

Page 9: ...ull and the position of the paddlewheel may affect the performence of the unit If the log under or over reads then the calibration factor can be adjusted to compensate Enter the Engineering mode by first turning off the power supply to the instrument Press and hold the SPEED key whilst the power supply is turned back on The word ENG will appear on the display Press either the TRIP or TOTAL keys to...

Page 10: ...lled within the housing To accommodate pitch and roll motions most effectively mount the sensor as near to horizontal as possible For best performance in rough weather conditions it is also advisable to mount the sensor in a position usually amidships that minimises lateral accelerations due to pitch and roll Avoid mounting the sensor high above the water line because doing so also increases pitch...

Page 11: ...line at all times When the vessel s heading is within the pre set error limits the dead ahead indic ator is lit to show that all is well see Figure 3 and no steering adjustment is required This is the display when assisted steering is started MAG O MAG O Magnetic heading shown Switch Backlighting Heading 263 degrees ENTER MAG O MAG O Magnetic heading shown Switch Backlighting Heading 263 degrees E...

Page 12: ...ing indications If the error increases beyond 180 the error display reverses to show that the shortest route back to the desired heading is now using the opposite tiller SETTING THE DESIRED HEADING 0 0 0 0 MAG O TRUE O COMPASS ENTER Lubber Line Dead ahead within error setting MAG O TRUE O ENTER MAG O TRUE O ENTER COMPASS COMPASS COMPASS COMPASS Cruiser Cruiser Cruiser Bring the Vessel to the desir...

Page 13: ...wn by the steering chevrons as shown on Figure 5 for two seconds when the key is released whereupon the display returns to the normal steering display SETTING OR STOPPING THE ALARM During assisted steering press up to switch the alarm on and down to switch it off The bell symbol shows when the alarm is on Whenever the alarm is on and the heading during assisted steering is outside the boundaries s...

Page 14: ...und by reference to Almanacs maps or charts The variation is the offset of magnetic North from true North If the Magnetic North the variation is West of true North enter it as a positive number Conversely if it is quoted as East of true North enter a negative variation value If not already in Engineering En displayed hold down the ENTER button while turning on the power to put the unit into the En...

Page 15: ...l heading indication 13 COMPASS ERROR CORRECTIONS In common with all magnetic compasses the presence of magnetic objects in the vessel can distort the earth s magnetic field nearby and affect the accuracy of the detection of magnetic North and the accuracy of readings at other points of the compass The errors are known as compass deviations However compensation at these other points of the compass...

Page 16: ... has been logged When all the errors have been logged press UP and DOWN together to return to Engineering mode To exit Engineering press ENTER As a final test the vessel can be swung to confirm that the compass is operating satisfactorily with all errors correctly compensated These errors can be compensated automatically in the Target Cruiser Compass if the vessel can be pointed accurately in part...

Page 17: ...in sequence as described If the error at a particular angle is known to be negligible there is no need to align the vessel and log the compensation at that position Additional corrections can be added at different visits if a convenient alignment is achieved ...

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Page 20: ...se Nasa Marine Ltd will at its discretion repair or replace any components which fail in normal use within the warranty period Such repairs or replacements will be made at no charge to the customer for parts and labour The customer is however responsible for transport costs This warranty excludes failures resulting from abuse misuse accident or unauthorised modifications or repairs In no event sha...

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