Fuel Quantity; Vent System - BOMBARDIER Challenger 601-3A CL-600-2B16 Pilot Training Manual

FUEL QUANTITY

The fuel quantity in each main tank as well as
the auxiliary tank is measured by a system of
the capacitance-type transmitters located in
each tank. Quantity information is fed to a sig-
nal conditioner which displays the quantity in
pounds for each tank, as well as the total, on the
fuel quantity panel. Only usable fuel is shown.
The digital readouts are tested from the engine
instrument test switch on the center instru-
ment panel. A successful test is indicated by
the appearance of a series of eights in the dig-
ital readouts (except for the last digit which
is zero on all but the total readout wherein the
last two digits are always zero).
The probes for the fuel quantity are powered
as follows:
• L. MAIN ............... DC essential bus
• R. MAIN ........................ battery bus
• AUX and TAIL .................. DC bus 1
MOTIVE
FLOW
5-10 CL 601-3R
MAIN TANK VENT
NACA SCOOP INLET
SCAVENGE FLOW
TO COLLECTOR TANK
PURGE
SCAVENGE
LINE
EJECTOR
Figure 5-8. Vent System
FOR TRAINING PURPOSES ONLY
FlightSafety Canada
CL-600-2B16 PILOT TRAINING MANUAL
The fuel quantity indicators are powered via
the SDC as follows:
• RH, LH,
AUX, TAIL ......... DC essential bus
• TOTALIZER ................. battery bus
If power to the probes is lost, the affected
quantity indicator will read zero, and the
amount of fuel remaining in that tank will be
subtracted from the total.

VENT SYSTEM

Each tank is vented at two different points
through a series of vent lines which allow air
to enter or escape the tanks, depending upon
whether fuel is being used or added. (Figure
5-8.) The vent lines extend from each wingtip
to common manifolds which form an inter-
connected inverted "U" in each fuselage wall
and then return to the wing area where they
MAIN TANK
CLIMB VENT
INVERTED U
VENT TUBE
PURGE LINE
L té e
L td .
AUXILIARY
TANK VENT