Electrical System Emergencies; M Bus 1 Warning - Cirrus SR22 Pilot Operating Handbook

C D
IRRUS ESIGN
SR22

Electrical System Emergencies

M BUS 1 Warning

High Voltage on Main Bus 1
1. ALT 1 Switch ...................................................................................... CYCLE
2. M Bus 1 Voltage (M1) ...................................................................... CHECK
◆
If M Bus 1 Voltage is greater than 32 volts:
a. ALT 1 Switch......................................................................................OFF
b. Perform
Main Bus 1 Voltage is excessive, indicates an alternator 1 voltage
regulator failure; will typically be associated with abnormally high
voltage indications on M1, M2 and ESS buses, may also be associ-
ated with
P/N 13772-006
Reissue A
ALT 1 Caution (Failure)
Procedure Complete
M BUS 2 Warning
S
ECTION
E
LECTRICAL
M BUS 1
Checklist (do not reset alternator).
• N •
OTE
or ESS BUS Warning
3: E P
MERGENCY ROCEDURES
S E
YSTEM MERGENCIES
message.
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