Learjet 60 - Engine Indicating; Engine Oil Indicator (Pressure and Temperature); Ignition Lights; IGNITION Switches

Learjet 60

Pilot's Manual
IGNITION SWITCHES
The IGN111ON switches, located on the center
switch panel, are used
to
obtain continuous engine ignition . The
switch controlling the left
engine ignition
system is labeled L-OFF . The
switch controlling the
right engine ignition
system is labeled R-OFF . When
an IGNITION
switch is placed in the On
(L or R as applicable) position, 28
VDC
from the corresponding
L or R IGN CHA and IGN CH
B circuit
breakers is applied
to the corresponding ignition exciter
units .
IGNITION LIGHTS
Green
lights above each IGNITION switch
are installed to indicate ig-
nition system
operation . The corresponding
light will be illuminated
when the
associated ignition system
is operating either
continuously
(IGNITION
On) or automatically
(FADEC control) .
ENGINE INDICATING
ENGINE
OIL INDICATOR (Pressure
and Temperature)
An ENG OIL indicator, to
indicate the oil pressure
and temperature,
is provided for
each engine . The instruments
are located on the
center
instrument panel
. The indicator face is divided
into two semi-circular
scales - one for
pressure and one for
temperature . Each scale
has a
separate pointer
. The pressure scale ranges
from 0 to 220 psi .
The tem-
perature scale
ranges from -50°C to 150°C .
The temperature
pointer is
operated by
a resistance-type
temperature sensor in an
oil pressure
line on
the respective engine .
The pressure pointer is operated
by a
pressure
transducer which senses the
pressure differential
between
the oil scavenge
line and the oil pressure
line . Electrical power
for sys-
tem operation
is 28 VDC supplied through
the 2-amp L and
R OIL
TEMP-PRESS
circuit breakers on the
pilot's and copilot's circuit
breaker
panels . Refer to Airplane Flight
Manual for instrument
limit
markings .
PM-123

2-11
Original