Piper SENECA III - Starting Engines with External Power

PIPER
AIRCRAFT
CORPORATION
SECTION 4
PA-34-220T,
SENECA lH
NORMAL
PROCEDURES
4.23
STARTING
ENGINES
WITH
EXTERNAL
POWER
An
optional
feature
called
the
Piper
External
Power
(PEP)
allows
the
operator
to
use an
external
battery
to
crank
the
engines without
having
to
gain
access
to
the
airplane's battery.
Turn
the
battery
switch
OFF
and
turn
all
electrical equipment
OFF.
Connect
the
RED
lead
of the
PEP
kit
jumper
cable
to
the
POSITIVE
(+)
terminal
of
an
external
12-volt
battery
and the
BLACK
Iead
to
the
NEGATIVE
(-)
terminal.
Insert
the
plug of
the
jumper
cable
into
the
socket
located
on
the
fuselage.
Note that
when
the
plug
is
inserted,
the
electrical
system
is ON.
Proceed
with
the
normal
starting
technique
After the
engines
have
started, reduce
power
to
the lowest
possible
RPM,
to
reduce
sparking,
and
disconnect
the
jumper
cable
fromthe
aircraft.
Turn
the
battery
switch
ON
and
check
the alternator
ammeter
for
an
indi-
cation of
output.
DO
NOT
ATTEMPT
FLIGHT
IF
THERE
IS NO
INDI-
CATION
OF
ALTERNATOR
OUTPUT,
NOTE
For
all
normal
operations
using the
PEP
jumper
cables,
the
battery
switch
should
be
OFF,
but
it is
possible
to
use
the
ship's
battery
in
parallel by
turning
the
battery
switch ON,
This
will give longer
cranking
capabilities,
but
will
not
increase
the
amperage.
CAUTION
If the
ship's
battery
has been
depleted, the
external
power
supply
can
be
reduced
to
the
level
of
the
ship's battery.
This
can
be
tested by
turning
the
battery
switch ON
momentarily
while
the
starter
is
engaged.
If
cranking
speed
increases,
the
ship's
battery
is
at
a
higher
level
than
the
external
power
supply.
If
the battery
has been
depleted by excessive
eranking,
it
must
be
recharged
before
the second
engine is
started.
All
the alternator
current
will
go
to
the
low
battery
until it
receives
sufficient charge,
and
it
may
not
start
the other
engine
imme-
diately,
ISSUED:
JANUARY 8,
1981
REPORT:
VB-1110
4-21