Ess Bus Warning - Cirrus SR22 Pilot Operating Handbook

C D
IRRUS ESIGN
SR22

ESS BUS Warning

High or Low Voltage on Essential Bus
1. Essential Bus Voltage (ESS)............................................................. CHECK
◆
If Essential Bus Voltage is greater than 32 Volts:
a. Main Bus 1 and Main Bus 2 Voltages (M1 and M2) ............. CHECK
b. Perform appropriate
Checklist.
◆
If Essential Bus Voltage is less than 24.5 Volts:
a. Perform
Checklists.
◆
If unable to restore at least one alternator:
a. Non-Essential Loads ................................................................REDUCE
❍
If flight conditions permit, consider shedding:
(1)Air Conditioning
(2)Landing Light
(3)Pitot Heat
(4)Cabin Fan
(5)Nav Lights
(6)Strobe Lights
(7)Audio Panel
(8)COM 2
2. Land as soon as practicable (Battery reserve only).
Dependent on battery state, flaps and landing light may be unavail-
Essential Bus voltage is high or low. High voltage indicates alter-
nator voltage regulator failure; will typically be associated with
high M1 and/or M2 voltages and
Low voltage indicates dual failures of Alternators 1 and 2, will typi-
cally be associated with low M1 and M2 voltages,
and M BUS 2 Caution
P/N 13772-006
Reissue A
M BUS 1 Warning
ALT 1 Caution (Failure)
Procedure Complete
• CAUTION •
able on landing.
2 Warning
messages, and
ALT 2 Caution (Failure)
S
ECTION
E
LECTRICAL
ESS BUS
or
and ALT 2 Caution (Failure)
• N •
OTE
M BUS 1 Warning
messages.
ALT 1 Caution (Failure)
messages.
3: E P
MERGENCY ROCEDURES
S E
YSTEM MERGENCIES
M BUS 2 Warning
and/or M BUS
M BUS 1 Caution
and
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