Technical Specifications

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69 8 4 VALVE_
STUCK_
CLOSED
1YesYesNoValve
Stuck
Closed
1- A hand-
wheel is left
engaged.
2- Valve is
seized in
place.
3- Insufficient
actuator
thrust.
1- Verify pres-
ence of a
mechanical
stops such as
a handwheel.
2- Repair
valve.
3- Run a PST
or Extended
signature. If
friction is
abnormal
then overhaul
valve.
70 8 5 VALVE_
STUCK_
OPENED
1YesYesNoValve
Stuck
Opene
d
1- A hand-
wheel is left
engaged.
2- Valve is
seized in
place.
3- Exhaust
port is
clogged up
(no venting).
4- An acces-
sory prevents
the air from
the actuator
to be vented.
1- Verify pres-
ence of a
mechanical
stops such as
a handwheel.
2- Repair
valve.
3- Verify that
exhaust port is
not restricted.
4- Run a TBT
test from Val-
Vue ESD. A
failure of the
TBT test would
indicate a
problem in
venting.
71 8 6 n/a 2 n/a n/a n/a n/a n/a n/a
72 8 7 n/a 2 n/a n/a n/a n/a n/a n/a
Table 8 SVI II ESD Fault Matrix (Continued)
Seque
nce
Byte
#
Bit
#
FAULT Name Critical-
ity Of
Alarm
Auto-
mati-
cally
cleared
Can be
cleare
d
Per-
sists
across
resets
TEXT
For DD
&
Val-
Vue
ESD2
English
Probable
Cause
English
Recom-
mended
Action