Learjet 60 - Windshield Defog System (Figure 6-4); WSHLD DEFOG Switch

Leadet 00
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PRot's Manual
WSHLDDEFOG SWITCH
The
windshield defog system
is
controlled through the WSHLD
DEFOG switch in the ANTI-ICE group on the center switch panel
.
Aircraft with two
position switch :
The two switch
positions are OFF
and WSHLD
DEFOG (On) . When the
WSHLD DEFOG switch is set to the On position, the integral
heaters
will be supplied 115 volts AC power from the inverter system via the
windshield heat
control unit . Normal operating temperature range
with the switch on is 105°-120°F
(41' - 49C) .
Aircraft with three position switch :
WINDSHIELD
DEFOG SYSTEM
Figure 6-4
The three switch positions
are OFF, LOW and NORM . With the
WSHLD DEFOG switch set to LOW or NORM,
the integral heaters
will
be supplied 115 volts AC power from the inverter system via the wind-
shield beat control unit . When the switch is set to LOW, operating tem-
perature range of
the windshield
is 90'-97'F (32'-36'C)
. When the
VVSIJLID DEFOG switch is set
to NORM,
operating
temperature range
of the windshield is 103'-120'F (4P-49C) .
MUM
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