RDG603A73 - Issue 3
Page 31 of 96
splash proof and are correctly installed with the gauges vertical. Do not install so that they
remain out in the open, or cover up when not on use.
The control panel engine tachometer is supplied already calibrated to measure correct engine
speed. If a new control panel, tachometer or alternative alternator is fitted, the tacho will
require re-calibrating.
Control Panel Calibration Procedure:
•
Connect control panel plug to engine wiring loom plug.
•
Turn ignition on (do not start engine).
•
Press and hold black button on rear of ta
cho until “H-“appears on the digital display at
the bottom of the tacho (on the front).
•
When pressing and holding the black button on rear of tacho, the value displayed will
increase / decrease until the button is released. Then when pressing again it will
increase / decrease in the other direction. Keep doing this until the digitally displayed
value on the bottom of tacho reaches the correct value, according to the type of
alternator (see below table). This must be set to the alternator with blue and black
wire connected to it.
•
Confirm settings to tacho meter reader.
•
An optical tachometer is required to check the reading.
Barrus Alternator (Amps)
Barrus Tacho reading
40
10.50
– 11.00
150
19.50
– 20.00
240
22.00
Alternative or non-standard alternators will require calibrating and checking by trial and error,
with a hand held tacho until the engine speed and indicated tachometer speed are the same.
17. Seawater Pump Hose Minimum Inlet Size
Cross Sectional Area
Shire 43 WB / 50 WB
25mm (1”)
Note: A suitable reinforced, non-collapsible hose must be used.
