Cessna 188 Series Service Manual page 276

MODEL 188 & T188 SERIES SERVICE MANUAL
SECTION 14
UTILITY SYSTEMS
Page No.
TABLE OF CONTENTS
Aerofiche/Manual
HEATING SYSTEM .........
. 2C/14-1
Description ..........
2C6/14-6
Description ...... .....
2C1/14-1 Operation ..
....... 2C6/14-6
Operation ......... ..
2C1/14-1 FRESH AIR INSTALLATION
VENTILATING SYSTEM
......
.2C1/14-1 (Beginning with 18802746) ......
2C6/14-6
Description
..........
2C1/14-1 Description..
........
2C6/14-6
Operation . ..........
2C1/14-1
Operation .........
2C6/14-6
DEFOGGING SYSTEM.
....... .2C1/14-1
Removal, Installation and Repair. 2C12/14-12
Description ..........
.2C1/14-1 AUXILIARY CABIN AIR
Operation . .....
. . . .. 2C1/14-1
INSTALLATION (Beginning with
FRESH AIR INSTALLATION
18801825) ...... ...... 2C12/14-12
(Beginning with 1880833) .. . .2C1/14-1 Description.2
......... 2C12/14-12
Description .... .. . 2C1/14-1
Operation . . . ... 2C12/14-12
Operation .. .. 2C1/14-1 Trouble Shooting .....
. 2C12/14-12
FRESH AIR INSTALLATION
Removal, Installation and Repair..
2C12/14-12
(Beginning with 18801825)
...... 2C6/14-6
14-1. HEATING SYSTEM. (See figure 14-1.)
14-7. DEFOGGING SYSTEM. (See figures 14-3 and
14-5.)
14-2. DESCRIPTION. The heating system is com-
prised of the heat exchange section of the exhaust
14-8. DESCRIPTION. The defogging system is com-
muffler, a shut-off valve, mounted on the right for-
prised of a defroster nozzle mounted immediately
ward side of the firewall, a push-pull control on the
forward of the instrument cluster panel, just aft of
instrument panel, outlets, and flexible ducts con-
the windshield in the cockpit, and flexible ducts con-
necting the system.
necting the system to the heating and ventilating
systems.
14-3.
HEATER OPERATION. Ram air is ducted
through an engine baffle and heat exchange section of
14-9. DEFOGGING SYSTEM OPERATION.
Ram air
the exhaust muffler, to the shut-off valve at the fire-
is ducted through an engine baffle and heat exchange
wall.
The heated air flows from the firewall shut-off
section of the exhaust muffler, to a tee in the aircraft
valve into a tee where it is distributed to both sides
heating system, where a part of the heated air is rout-
of the cockpit area.
The shut-off valve, operated by
ed to the defroster nozzle in the cockpit.
Fresh air
the "CABIN HEAT" control, located on the instru-
is ducted from the scoop door on the underside of the
ment panel, regulates the volume of heated air enter-
left wing stub to a connection in the ventilation sys-
ing the system.
Pulling the heater control full out
ter, where a part of the fresh air is routed to the
supplies maximum flow, shutting off flow completely
defroster nozzle on aircraft serials thru 18800985
when the control is pushed full in.
and not modified per kit SK188-27. By the use of
"CABIN AIR" and the "CABIN HEAT" controls, the
14-4.
VENTILATING SYSTEM.
(See figures 14-2
temperature and flow of air in the defogging system
and 14-5.)
can be regulated. Beginning with aircraft serial
18800986 and aircraft modified per kit SK188-27, the
14-5. DESCRIPTION. The ventilating system is
defroster air comes directly from the tee to the
comprised of a fresh air scoop door located on the
defroster nozzle and is not connected to the fresh
underside of the left stub wing on aircraft serials
air duct. Defogging is managed by the "CABIN HEAT"
thru 18800985 and not modified perkit SK188-27.
control increasing or decreasing the air fow.
Beginning with aircraft serial 18800986 and aircraft
modified per kit SK188-27 the air scoop door is lo-
14-10. FRESH AIR INSTALLATION.
(Beginning
cated on the right hand fuselage forward of the canopy.
with 18800833.)
(See figure 14-4.)
A push-pull control on the right side of the control
panel, an outlet and flexible ducting connecting the
14-11.
DESCRIPTION. The installation Is comprised
system.
of an air inlet in the leading edge of the vertical fin,
a plenum area in the vertical fin, ducting, routed to
14-6. VENTILATING SYSTEM OPERATION.
Fresh the cockpit area, and a louver assembly, located in a
air from the scoop door is routed through ducting to
bracket assembly in the right-hand cockpit area, ad-
the cockpit area.
The scoop door, operated by the
jacent to the ash tray.
"CABIN AIR" control, located on the instrument
panel, regulates the volume of fresh air entering the
14-12. OPERATION. Ram air enters the inlet on the
cockpit.
Pulling the "CABIN AIR" control full out
leading edge of the vertical fin, and routes through the
supplies maximum flow, shutting off flow completely
plenum area in the vertical fin.
A collector at the bot-
when the control is pushed full in.
Revision 1
14-1