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5.3 Auto Compass Calibration
Although the Wheelpilot internal compass is extremely
accurate, after installation it is necessary to calibrate the
compass to compensate for any deviations caused by
objects surrounding it on board the vessel.
With the vessel motoring along slowly (2-3 knots) in
calm conditions and the Wheelpilot in Standby Mode,
engage the clutch and press the Starboard key a num-
ber of times to induce a slow clockwise rotation of the
vessel. Press and hold the TAC K key, followed by the
Port and Starboard keys simultaneously to enter Auto
Compass Calibration Mode (Fig 5.1). The Port and
Starboard LEDs will both light. Allow the vessel to turn
through a minimum of 1
1
/
4
turns (450º) in approximate-
ly two minutes, during which time the fluxgate compass
will automatically calibrate itself.
If the rate of turn or the boat speed is too high, the Port
LED will flash (Fig 5.2) indicating that it is necessary to
either slow the boat or decrease the angle of turn. If the
rate or turn or boat speed is too slow the Starboard LED
will flash, indicating that it is necessary to either
increase the boat speed or increase the angle of turn. A
double beep will indicate that the calibration has been
successful, and the Wheelpilot will return to Standby
Mode. If the calibration has been unsuccessful after a
period of four minutes, a long beep will sound. Try
again carefully following the above directions.
5.4 Adjusting Belt Tension
The belt tension is set when the Wheelpilot is assem-
bled, however it may be necessary to adjust this during
the lifetime of the pilot.
The tension is adjusted by means of a screw situated
underneath the clutch lever (Fig 5.3). This screw is only
accessible when the lever is in the up (disengaged) posi-
tion. To increase the clutch tension, turn the screw anti-
clockwise. To decrease the tension, turn the screw
clockwise. The scale next to the screw indicates the cur-
rent tension setting. When the pointer is at the top, the
clutch is at maximum tension. Minimum tension is
indicated when the pointer is at the bottom.
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