BOMBARDIER Challenger 601-3A CL-600-2B16 Pilot Training Manual page 223

A separate two-element scavenge pump provides
for positive scavenging of the fan bearing sump
during all flight attitudes (climb or descent).
Chip detectors are located in strategic areas of
the scavenge system and in the oil tank.
Oil Filter
A disposable filter removes solid particles
from the oil. The filter case includes a bypass
valve and an impending bypass indicator
switch. When the differential pressure across
S5KJ S3KJ
TEST
LH
RESET
DS3KJ
LH
OIL FILTER
DS5KJ
LH
CHIP DETECT
ENG
IGN B
BATT
SHUNT
ENG
FUSES
OIL CONT
BYPASS
IND
APU ENG
5
BACKUP OIL
PWR POWER
E9
50
3
IND
APU
E7
START
EXT AC
PWR
3
CONT
CONT
E6
FUEL
BAT
DE- 7.5
CONT
FUEL
APR
3
CONT
AUTO
3
ADG
DEPLOY
CONT
3 BOARD
MAN
LIGHTS
ESS
PWR
SERV
3
CONT
CBP–E
Figure 7-4. Junction Box 4 (JB4)
7-6 CL 601-3R
S4KJ
TEST
RH
DS2KJ
RH
DS4KJ
RH
20
3
10
7.5
7.5
5
5
FOR TRAINING PURPOSES ONLY
FlightSafety Canada
CL-600-2B16 PILOT TRAINING MANUAL
the filter element exceeds a preset limit, it
causes the impending bypass indicator on
JB4 (battery direct bus) to trip. The indica-
tor must be reset by a reset button on JB4
(Figure 7-4).
Oil Cooler
A conventional oil-to-fuel heat exchanger
mounted on the engine maintains the oil tem-
perature within design limits.
Indication
A transducer on the pump pressure line senses
oil pressure and transmits it to a signal data
converter (SDC).
A resistance bulb in the oil tank provides tem-
perature signals to the SDC.
The SDC divides the signals into two outputs
and transmits them to alternate fiber optic
segments that form the vertical analog scales
of the oil pressure and oil temperature indi-
cators (Figure 7-5). The fiber optic segments
are color-coded red, yellow, and green. These
colors are also painted on the instrument face
outboard of the analog scales.
A blue light at the bottom of each vertical
scale indicates a power-on condition. The oil
pressure indicators are calibrated in psi. The
oil temperature indicators are calibrated in
degrees Celsius.
Low oil pressure is sensed by a switch on the
pressure pump output line. When the switch
closes below 28 psi, the appropriate L or R
LOP light (Figure 7-5) on the lower face of the
indicator will illuminate to indicate that pres-
sure is below design minimums.
The SDC operates from two power
sources: battery bus and essential DC
bus. Lose of either power source will
result in loss of alternate segments of
the scales. The indicators will still
provide a reasonably accurate indi-
cation of pressure and temperature.
NOTE
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