Piper SENECA III - Page 71

PIPER
AIRCRAFT
CORPORATION SECTION 3
PA-34-220T.
SENECA
III
EMERGENCV
PROCEDURES
loads
may
be
reinstated
as
required
to
a
maximum
of
60
amperes.
lí
both
alternator
outputs
cannot
be restored. hoth
alternator
switches
should be
i
left
OFE.
Reduce the
electrical
load
to
essential
systems
and
land
as
soon
as
practical. 1he
battery
is
the only
remaining
source
of
electrical
power.
If
one
ammeter
shows
zero
output.
cycle
its
switch OFFand then
ON.
If
this
faHs
to
restore
output
check the
circuit
breakers.
The
breakers
may
be
reset
once
il
required.
If
the
alternator
remains
inoperative
reduccelectrical
leads
if
necessary
and
exercise
judgment
regarding continued
flight.
Correctite
maintenance
actions
should
be
performed
prior
to
further
Ilichts.
NOTE
The
markings
on
the
ammeters
(loadmeters)
require
mental
interpolations
to
estimate the
ampere
values
noted.
Operating
the
alternators
at
less
than
60
amperes
will
assure
that the
battery
will
not
be
depleted.
WARNING
Compass
error
may
exceed
10°
with
both
alternators
moperative.
If abnormally
high
alternator
outputs
are
observed and
persists
(more
than
30
amps
above
known
electrical loads) they
may
be
caused
by
a
low
bauer
a
battery
fault.
or
other
abnormal
electrical
load.
If it is
caused
bya
low baners
the
indication
should
begin
to
decrease
towards
normal
within
5
minutes
R
this
condition
is
observed
proceed
with
the
following..
Turn
the
batters
switch
OFF
and
the
afternator
output
indications
should
decrease.
Turn
the battery
switch ON.
Should
the alternator
output
indications
not
decrease,
lease
the
battery
switch
OFF
and
land
as soon as
practical.
All
electrical
ioad
being
supphed
by
the
alternators.
Also
anticipate
complete
electrical
power
failure.
NOTE
Operation
with the alternator
ON
and the
battery
switch
OFF
should
be
made
only
when
required
by
electrical
failure,
due
to
increased
system
voltage
and
radio
frequency
noise.
ISSUED:
JANUARY
8,
1981
REPORT:
VB-1110
REVISED: AUGUST 9,
1982
3-21