Warning Devices
When a sensor detects a problem during
operation, the indicator on the instrument
panel will light and an alarm will sound.
Indicators are located on the instrument
panel, the alarm is located on the back of the
panel. Under normal operating conditions,
the indicators are off.
• Alarm (Buzzer): If a warning lamp
illuminates, the alarm will sound.
However, no alarm will sound when the
battery charging lamp illuminates.
• Alarm (Buzzer) Stop Switch: When
investigating the cause of an alarm, press
the alarm (buzzer) stop switch.
WARNING! The switch is used to shut
the alarm off temporarily. Turn the
alarm (buzzer) OFF when inspecting
for cause. Inspect and repair the
abnormality immediately.
• Warning Indicators: When operation is
normal, the warning indicators are OFF. If
an abnormality is detected, the sensor will
trigger the appropriate warning indicator
to light.
Figure 7
Battery Low Charge Indicator
(Figure 7) - When the alternator output is
too low, the indicator will light. When
charging begins, the indicator will turn off.
No alarm will sound for low battery charge.
Figure 8
Fresh Water (Coolant) High Temperature
Indicator and Alarm (Figure 8) - When the
coolant temperature reaches the maximum
allowable temperature (95˚C [203˚F] or
higher), the indicator will light and the alarm
will sound. Continuing operation at
temperatures exceeding the maximum limit
will result in damage and seizure. Check the
load and troubleshoot the fresh water
cooling system.
Figure 9
Engine (Lube) Oil Low Pressure Indicator
and Alarm (Figure 9) - When the engine oil
pressure falls below the specified level, the
oil pressure sensor will send a signal to the
indicator causing it to light and the alarm to
sound. Stop operation immediately to avoid
damage to the engine. Check the oil level
and troubleshoot the lubrication system.
PRODUCT OVERVIEW
20 6LPA Series Operation Manual
© 2007 Yanmar Marine International
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