Mooney M20R - Icing Protection - Maintenance Practices

SERVICE
AND
MAINTENANCE
MANUAL
MZOR
MOONEY
AIRCRAFT
CORPORATION
TROUBLESHOOTING
AIRFOIL
ICING PROTECTION
(con’t.)
TROUBLE
PROBABLE
CAUSE
REMEDY
CONTROL
PANEL
FAULT
Does
not
operate:
Check
Power
to
Control
Panel.
LED
malfunction
AMBER(High
Pressure
Warn)Depress
High
Pressure
Reset:
Illuminates
Check
Auto
Dimmer
setting.
Does
not
illuminate
Repair
or
re-
place
Control
Panel.
not
cancel
Replace
High
Pressure
Switch
Does
not
operate:
Check
Auto-dimmer
setting.
LED
malfunction
GREEN
(System
Status
Ind.)
Repair
or
Replace
Control Panel.
Operates
Continously:
.Repair
or
Replace
Control
Panel.
Does
not
operate:
Check
Auto-dimmer
setting.
__.------~
If
OK,
disconnect
cable
from
Pin
2
of
Connector
C1.
LED’s
should
LED
Malfunction
FLASHING
RED
flash
when
De-ice
or
Anti-ice
selected:
If
no
flash:
Check
wiring
Low
Pressure
Warn
Switch(es)
If NOT
OK:
Repair
or
Replace
Control
Panel.
Operates
Continously:
Check
system
for
restriction/blockage.
Replace
Low
Pressure
Warning
Switch(es)
30-i
2-02
MAINTENANCE
PRACTICES
Level
I
Daily
and/or
Preflight
if
icing
is
forecast
or
expected.
This
level
of
checking
is
intended
to
determine
the
immediate
serviceability
of
the
equipment
without
recourse
to
the
use
of
tools
or
special
procedures.
Maintenance
Practice
Notes
Check
security
and
condition
of
visible
components.
Switch
on
electrical
power.
Check
that
contents
display
The time
taken
for
the
display
to
stabilize
will
de-
illuminates
and
stabilizes
at
a
sensible
value
within
1.5
pend
on
the
quantity
of
fluid
present
in
the
tank
as
minutes.
Replenish
tank
contents
if
necessary
for
in-
the
display
reading
will rise from
0
at
about
0.1
tended
flight.
gallon
per
second.
Operate
Airframe/Propeller
system
at
"De-lce".
Check
that
both
indicator
LED;s
flash
RED
then
change
to
a
single
GREEN
(opposite
De-ice)
as
pressure
rises.
Check
that
High
Pressure
Warning
LED
does
not
illumi-
nate.
Press
High
Pressure
Reset.
Check
that
AMBER
LED
illuminates
while
switch
is
depressed.
Switch
Airframe/Propeller
system
directly
to
"Anti-lce",
check
that
pump
speed
reduces
(audible
check)
and
It
may
not
be
possible
to
observe
fluid
flow if
mod-
that
GREEN
LED,
which
is
illuminated,
changes
to
erate
or
heavy
rain
is
falling.
match
switch
selection.
Check
that
de-icing
fluid
flow
is
evident
from
visible
panels
if
weather
conditions
permit.
Switch
Airframe/Propeller
system
OFF.
Press
windshield
De-ice
Switch.
Check
that
de-icing
fluid is
discharged
from
spraybars.
Rev.
7-96
30-12-02
Island Enterprises