Learjet 36A - Exterior Windshield Defog, Anti-Ice, and Rain Removal

[brnOOffiDrnU ;mffi
lIillli RlalDal
ANn-ICE SYSTEMS (CONT)
EXTERIOR WINDSHIElD DEFOG, ANTI-ICE, AND RAIN REMOVAL
I
·
Aircraft 35-067 thru 35-112 except 35-107 not incorporating
AMK 91-2. Aircraft 36-018 thru 36-031 not incorporating
AMK 91-2.
AUTOMATIC OPERATION
1. IN NORMAL OUT DEFOG Knob - Pull out.
2. WSHLD
HEAT AUTO-MAN Switch - AUTO. The green WSHLD
HEAT light will come on when the control valve begins to open.
The valve
will go to full open. If the red WSHLD OV HT light
comes on, the airflow
will automatically stop until the windshield
has cooled sufficiently, then resume.
3. Automatic operation
is recommended when constant use of the sys-
tem is required.
4. To de-energize the system:
a.
AUTO-MAN Switch - MAN.
b. ON-OFF Switch - Hold to OFF until the airflow stops.
If the system continually cycles to the WSHLD OV HT
mode after prolonged use,
it can be prevented by
switching the AUTO-MAN switch to MAN and holding
the
ON-OFF switch to OFF for reduced defog flow.
MANUAL OPERATION
1. IN NORMAL OUT DEFOG Knob - Pull out.
2. WSHLD HEAT
AUTO-MAN Switch - MAN.
3. WSHLD HEAT ON-OFF Switch - Hold ON until the desired
amount of airflow is obtained. As the valve opens, the green
WSHLD HT light
will illuminate and the defog flow will remain at
the
level it is when the ON-OFF switch is released. If the red
WSHLD
OV HT light comes on, the airflow will automatically stop
until the windshield has cooled
suffiCiently, then resume.
E~ If the system continually cycles to the WSHLD OV HT
~, mode after prolonged use, windshield airflow may be
decreased by holding the WSHLD HT ON-OFF switch
to
OFF until desired airflow is reached and then releas-
ing switch.
IF AIRFLOW SHOULD FAIL
The pilot's windshield may be anti-iced by the following:
1. WSHLD
& RADOME/RADOME Switch - WSHLD & RADOME.
This will anti-ice the radome and the pilot's windshield and give
alcohol
flow for approximately 45 minutes. The amber ALC AI light
will come on when alcohol is depleted.
2. WSHLD
& RADOME/RADOME Switch - OFF when ALe AI
light illuminates or dear of icing conditions.
2·68 FAA APPROVED 4-30-76
REISSUED 2-25-81, CHANGE 10