Flowserve StarPac 3 - Manual (Page 29)

29
StarPac Intelligent Control System FCD VLENIM0066-05 04/14
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14.5 Pressure Sensor Cable Replacement
It is not necessary to remove the pressure sensor prior to replacing the pressure sensor cable.
1. Loosen the tubing nuts on the conduit leading to the pressure sensor, if applicable.
2. Loosen the sensor nut.
3. Gently pull the conduit and sensor nut approximately 1/2” to 3/4” from the sensor. Use needle nose pliers to
release the locking sleeve of the Lemo™ connector by moving the collar away from the sensor and disconnect
the connector from the sensor. Swing the sensor conduit out of the way (refer to Figure 10).
4. Remove the main cover.
5. Remove the two keypad retaining screws. Carefully pull the keypad away from the main PCB board. Unplug
the keypad ribbon cable from the main PCB board and remove the keypad.
6. The pressure sensor cable has four wires that are terminated in a terminal strip found at the bottom of the
main PCB board assembly. Remove the four pressure sensor cable wires from the terminal connector.
Refer to figure 11 to make sure the correct sensor cable is being removed. Gently pull the cable out of the
housing.
NOTE: On certain applications, the cables may be potted inside the fitting at the bottom of the positioner
housing. To remove the cable it will be necessary to cut the existing cable on both sides of the fitting. The
fitting will need to be removed from the housing and a new replacement fitting will need to be installed. After
the new cable is installed it will be necessary to repot the cable inside the new fitting.
Figure 11: Pressure Sensor and Thermocouple Terminal Strip
7. Remove the pressure sensor cable from the conduit.
8. Feed the new pressure sensor cable into the conduit. Then feed the bare end of the cable into the StarPac 3
housing through the conduit entry.
9. Plug the pressure sensor cable Lemo™ connector into the pressure sensor. Align the red dots on the sensor
and connector to reconnect the Lemo™ connector into the pressure sensor. Fully seat the connector until the
locking sleeve latches. Replace the sensor nut and tighten.
10. Cut the bare end of the cable in the housing to the proper length so that the wires can be terminated properly.
Terminate the wires in the terminal strip. Refer to Figure 11 to make sure that the wires are terminated pro-
perly according to the correct color scheme.
P 1
)kl
B(
dnr
G
P 1
)t
h
W( -
t
uo
P 1
)nr
G(
+ t
uo
P 1
)d
eR(
C
DV
5+
1
P 2
)kl
B(
dnr
G
P 2
)t
h
W( -
t
uo
P 2
)nr
G(
+ t
uo
P 2
)d
eR(
C
DV
5+
)le
Y(
pu
oC
mr
hT
)d
eR(
p
uo
C
mr
hT
2 3 4 5 6 7 8 9 10