Mooney M20R - Scheduled Maintenance Table

MOONEY
AIRCRAFT
CORPORATION MZOR
SERVICE AND
MAINTENANCE
MANUAL
I
INDICATIONTROUBLESHOOTING
(con’t.)
PROBABLE
CAUSE
POSSIBLE
SOLUTION
F. No low
evaporator
fan
speed
i.
Failed
switch
i.
Replace
(hi
speed OK)
2.
Failed
resistor
2.
Replace
3.
Failed
reilay
3.
Replace
G.
Compressor/Condenser
will
not
1. C/B
failed
or
OFF
1. Turn
ON
or
replace
operate
2.
Relay(s)
jfailed
2.
Replace
3. Pressure switch
failed
3.
Replace
4.
Power
c0ntactor
failed
4.
Replace
5. Low
amFjient
temperature
5.
Normal
6.
Low
refri$erant
charge
6.
Re-charge
system
7.
Motortem7perature
SWfailed
7.
Replaceswitch
H. No
evaporator
module air flow 1. C/B
OFF
i.
Turn
ON
2.
C/B
failed
2.
Replace
3.
Mode S~ failed
3.
Replace
4. Fan
spe~d
SW
failed
4.
Replace
5. Seized
r~otor(s)
5.
Replace
6.
Blower
wheel
failed
6.
Replace
7. Blocked
air
outlet
duct
7. Remove
debris
8.
Blocked
air
inlet
duct
8.
Remove
debris
9.
Aircraft
dower
not
ON
9.
Turn
ON
10. Motor
t$mperature
SW
10. Turn
ON
failed
i.
Evaporator
module coil
freesing
1. No
air
flo;w
1.
Turn
fan ON
2.
Expansion
valve
failed
or
2.
Remove debris
or
replace
clogged
3.
Expansion
valve
setting
low
3. Reset
to
obtain
26-30 PSIG
suction
pressure
J.
Pressure
switch
cycles
1.
System
over
charged
1.
Reclaim
refrigerant
as
required
thigh
pressure
cutout)
2.
Conden
r
coil
inlet air
ex-
2. Normal
condition
tremely
ho
3.
Condens~r
inlet
clogged
3.
Remove debris
4.
Discharg~
line
clogged
or
4.
Replace
or
unkink hose
kinked
5.
Excessively
high
ambient
5.
Normal
condition
temperatu
rei
NOTE
i.
SCHEDULED
MAINTENANCE
TABLE
The
above
system
and
component
failure
and/9r
CHAPTER
5
normally
lists the
maintenance/replace-
abnormal
operation
and
possible
solutions
arg
ment
time
frames
for
components.
However,
since
spe-
only_a _partial’
listing
of what
may
occur.
The
moire
informed
the service
personnel
are
in
the
cific
air
conditioning
components
have
sub-component
operation
of the
sysfem
and its
various
listings,
these
components
are
listed
on
following
page:
components
will reduce
the
time
to
diagnose
failures
and
may
add
other
probable
causes
to
the
above list.
2158-00
-COMPONENT
INSPECTION,
SERVICING
AND/OR
MAINTENANCE
SCHEDULES.
21-58-00
REV.
10-98
14
Island Enterprises