RAZAIR
‐
A1
‐
METRO
‐
III
‐
AFM
‐
001
1
‐
11
Battery
voltage
may
be
monitored
by
selecting
the
appropriate
voltmeter
switch
position.
The
voltmeter
and
selector
switch
are
located
on
the
pilot´s
side
console
(Fig
22).
Fig.
22
Voltage
selector
and
meter.
The
temperature
of
the
batteries
is
monitored
by
an
indicator
and
two
switches
(fig
23).
The
indicator
contains
a
temperature
meter
for
each
battery
(fig
23
‐
5),
an
amber
WARM
light
(fig
23
‐
4),
which
illuminates
if
either
battery
temperature
exceeds
120ºF,
and
a
red
HOT
light
(fig
23
‐
3)
which
illuminates
if
either
battery
exceeds
150ºF.
The
temperature
scales
on
the
meter
read
from
100
to
190ºF.
Below
120ºF,
the
scales
are
marked
in
green.
Between
120
and
150ºF
they
are
marked
in
yellow,
and
above
150ºF
they
are
marked
in
red.
Two
switches
above
the
indicator
are
labeled
“BAT
TEMP
IND
TEST”
(Fig
23
‐
1)
and
“RANGE
EXTEND”
(Fig
23
‐
2).
Temperatures
between
50
and
100ºF
can
be
read
by
clicking
on
the
“RANGE
EXTEND”
switch.
This
switch
adds
50ºF
to
the
battery
temperatures
and
displays
the
results.
The
actual
temperature
will
be
the
scale
reading
minus
50ºF.
GENERATORS
Two
engine
‐
driven
generators,
mounted
on
each
engine,
are
the
airplane’s
primary
source
of
DC
power.
Each
generator
output
is
limited
to
28.5
volts
and
electrically
limited
to
305
amperes
at
71%
engine
rpm.
The
generator
control
switches
are
located
on
the
left
switch
panel
(Fig
21)
and
have
three
positions:
L
(or
R),
OFF
and
RESET.
L
GEN
FAIL
or
R
GEN
FAIL
annunciator
lights
will
illuminate
whenever
the
respective
generator
is
off
‐
line.
Each
generator
voltage
can
be
monitored
by
selecting
the
appropriate
voltmeter
switch
position
(fig
22).
Two
DC
ammeters,
connected
as
loadmeters
are
installed
on
the
left
side
console
to
indicate
the
respective
generator’s
output
(Fig
24).
Fig.
24
DC
Ammeters.
Fig.
23
Battery
temperature
indicator.
