AIR CONDITIONING AND PRESSURIZATION
Description
Aircraft Operations Manual
2.1
S2
PAGE
13
Applicable to aircraft with Mod. No. 3121 installed
3.
CONTROLS AND INDICATORS
A10723
L/R BLD AIR LEAK light (amber).
See AOM 16.1 Pneumatics.
L/R DUCT OV TEMP light (amber).
Comes on together with associated master cau-
tion for a:
−
ACP Compressor discharge overtemp.
−
Distribution duct overtemp.
Corresponding Bleed Valve will automatically
close.
L/R RECIRC switch.
Used to operate the respective systems recir-
culation fan.
L/R RECIRC light (amber).
Comes on should the recirculation fan fail.
(Fan speed below 80% of normal speed).
L/R TEMP SELECT switch.
Used to select automatic or manual control of
temperature in the respective compartments.
AUTO
Temperature automatically regu-
lated at level selected with temper-
ature selector knob.
HOT/COLD Springloaded positions where tem-
perature control valve moves in
desired direction. (Shall only be
used if the automatic temp. regula-
tion fails. The temperature switches
are guarded in AUTO position to
prevent unnecessary use of the
manual mode.)
Neutral
No temperature regulation.
TEMP IND switch.
Used to select either cabin or L duct tempera-
ture to be displayed on the temp indicator. The
switch is springloaded to L DUCT position.
Temperature control knob.
Used to set desired compartment temperature
when system is in AUTO. Pos. ”1” + 18
C.
Pos. ”8” = up to 29
C.
CABIN TEMP indicator.
Displays cabin temperature in
C.
AIRCOND master caution will not come on to-
gether with this light.
NOTE
A
A
AIR CONDITIONING PANEL
TEMP IND
L DUCT
CABIN
CABIN
F DECK
RECIRC
ON
RECIRC
ON
TEMP SELECT
AUTO
COLD HOT
TEMP SELECT
AUTO
COLD
HOT
COLD
HOT
COLD
HOT
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
L DUCT
OV TEMP
R DUCT
OV TEMP
L RECIRC R RECIRC
L BLD AIR R BLD AIR
LEAK
LEAK
OFF
OFF
AIR COND
0
10
20
30 40 50
60
70
80
TEMP
C
Fig. 5 Air conditioning panel
−
controls and indicators
Jun 01/20
