NORMAL PROCEDURES
AIRPLANE
OPERATIONS
MANUAL
1-02-13
Page
2
Code
01
REVISION 37
AOM-145/1114
APU START WITH BATTERIES
Internal Safety Inspection ............................................. COMPLETED
Batteries 1 & 2............................................................... AUTO
Immediately after the batteries are switched ON the aural message
“AURAL UNIT OK” can be heard.
Avionics Master 1 or 2 .................................................. ON
Batteries Voltage .......................................................... CHECKED
Check battery voltage on MFD.
If battery voltage is below 19 V it must be replaced. If battery
voltage is below 24 V report to the maintenance personnel or
recharge the affected battery by using the APU generator. In case
of recharging, it is recommended that battery 1 be turned OFF
before APU start. After APU start wait 3 minutes then select battery
1 to AUTO.
The minimum time for battery recharging is 30 minutes.
For cold soak operation, refer to Operation in Icing Conditions
section.
Once the batteries are on, the pilot must concentrate on starting up
the APU shortly, so as to save the batteries. Avoid, for example,
taking time to adjust the seat or to look at documents. Plan to do
these things after starting the APU and its generator is on.
Backup Battery (EMB-145 XR only)............................. CHECKED
Release the Backup Battery Button momentarily and check if ISIS
remains operating normally.
Avionics Master 1 & 2 ................................................... OFF
Once the battery charge is checked, Avionics Master 1 & 2 must be
switched OFF before starting the APU.
PUMP PWR .................................................................. ON
Select one of the TANK 2 electric fuel pumps and switch the Pump
Pwr Tank 2 to on. However, if TANK 1 has more fuel than TANK 2,
use XFEED and select one of the TANK 1 pumps plus the Pump
Pwr Tank 1 instead.
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