
FlightSafety Canada
L t é e
L t d .
CL-600-2B16 PILOT TRAINING MANUAL
FOR TRAINING PURPOSES ONLY
systems limit maximum cabin pressure dif-
ferential if the normal controls fail. Additional
dual safety override controls limit cabin alti-
tude as well as negative cabin differential pres-
sure in both the automatic and manual modes.
PRESSURIZATION
GENERAL
Pressurization is divided into automatic, man-
ual, and emergency systems. The automatic
mode operates an electropneumatic outflow
valve while the manual mode, with no need for
electrical power, operates a pneumatic out-
flow valve.
AIR SOURCES
The source of air for normal pressurization is
the 10th-stage bleed-air manifold. The bleed
air from either engine is capable of providing
all pressurization requirements if one engine
is shut down or if other abnormalities occur.
(See Chapter 9, “Pneumatics,” and Chapter
11, “Air Conditioning,” for bleed-air opera-
tion.)
MAJOR COMPONENTS
The major components of the pressurization
system are:
• Automatic selector
• Manual regulator
• Outflow valves
• Jet pump
AUTOMATIC SELECTOR
T h e a u t o m a t i c c a b i n p r e s s u r e s e l e c t o r
(Figure 12-1) is located on the overhead panel.
In the upper right corner of each selector is a
nongraduated knob labeled “R,” used to set the
rate-of-cabin pressure change. The maximum
rate of change that can be set is 2,500 fpm. The
index point results in a rate-of-cabin climb
and descent of approximately 500 and 300
fpm, respectively.
In the lower right corner, the knob marked
“B” is used for setting barometric pressure.
The knob moves an arrowhead pointer across
a barometric pressure scale at the bottom of
the automatic selector.
12-2
CL 601-3R
0
B
Figure 12-1. Pressurization Control Panel