Blue Bird Coachworks 450 LXi, Owner'S Manual

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2-1 Dash and Monitor Panels
450 LXi Owner Manual
~ 2-1-8 ~
Rev. “C”
Buzzer Notes:
Note 1:
Water in Filter Buzzer. The Water in Filter (L14) input will activate the Buzzer during initial startup for a duration of
30 seconds, if the corresponding input was at ground when power was fi rst applied.
Note 2:
Low Air Buzzer. The buzzer and Low Air Indicator shall come on if the air pressure in EITHER front OR rear system
has decreased to ≤ 62 +2/-0 PSI. Once the air pressure in EITHER front OR rear system falls below 62 +2/-0 PSI, the buzzer
and indicator light shall remain on until the air pressure in BOTH front AND rear systems has reached a minimum of 70 + 1/-
1 PSI.
Note 3:
Engine Compartment Fire Alarm Buzzer. The Engine Compartment (Fire) Alarm (L18) input will activate the Buzzer
at the rate of 2.0 Hz with a 50% duty cycle when the corresponding input is at +12 Volts.
Note 4:
Stop and Check Engine (engine warning) Buzzer. The buzzer shall be continuously energized when either the stop
engine OR check engine lamps are commanded by the engine AND critical limits are exceeded on EITHER the oil pressure
data OR the coolant temperature data received off the data link. These limits shall be programmable. Default values for
engine are in the following table:
ENGINE COOLANT TEMP OIL PRESSURE
Deleted Deleted Deleted
C13 220 10
Table 2
Note 5:
TV/Safeline Buzzer. The TV/Safeline input will activate its indicator and the Buzzer at the rate of 1.0 Hz with a 50%
duty cycle when the corresponding input is at ground.
Priority Buzzer:
Priority shall be as follows with a priority 1 as the highest.
Table 3
BUZZER APPLICATION PRIORITY
ENGINE COMPARTMENT FIRE ALARM 1
LOW AIR 2
ENGINE WARNING 3
TV / SAFELINE 4
WATER IN FILTER 5
TURN SIGNALS 7
Indicator Signal Source:
See Table 4 for details on source for indicator light.