Check that ends of bias and feedback springs are
properly located. Install new Relay/positioner
bracket assembly on Actuator cover.
Replace short tube from Relay/positioner branch port
to fitting on side of Actuator cover.
Reinstall remaining air lines and return system to
service.
Adjust range
only) and/or start point. See
MAINTENANCE.
REPLACE GRADUTROL RELAY/
POSITIVE POSITIONER
FEEDBACK SPRING
See
appropriate part of REPLACE GRADUTROL
RELAY/POSITIVE POSITIONER for correct feedback
spring replacement procedures.
REPLACE GRADUTROL RELAY/
POSITIVE POSITIONER FILTER
B WITH GRADUTROL RELAY
When using the following procedure, see Figures 5, 8,
and 9 for exploded diagrams and Tables 6 and 7 for parts.
2.
3.
4.
5.
Remove tubing.
Remove
Relay air fittings.
Remove filters from Relay ports with pointed tool
such as an awl.
Install foam filters, taking care not to fold
or
bunch them together.
Reinstall fittings and tubing. Restore system to
service.
F
POSITIVE POSITIONER
When using the following procedure, see Figures 8 and 9
for exploded diagrams and Tables 6 and 7 for parts.
Remove tubing.
To remove positioner from Actuator cover, follow
appropriate procedures under REPLACE
GRADUTROL RELAY/POSITIVE POSITIONER.
Remove service plate (Fig. 12 through 14) from
positioner.
Replace filter assembly with Filter Assembly
14001865-001.
5.
Replace service plate and reinstall positioner.
6. Reconnect tubing and restore system to service.
INSTALL STEM
FEATURE
GENERAL
A valve
stem
C, E)
will not spin when it is locked to the
Actuator. The
feature is built into 13-inch
C, and E and can be added to the and
C, and E. Adding the
feature involves
modifying the latching mechanism in the Actuator then
replacing the stem button on top of the valve.
using the following procedures, see Figures 8 and
10 for exploded diagrams and Tables 6 and 8 for parts.
MODIFY ACTUATOR
1.
2.
3.
4.
5.
6.
7.
Disconnect air lines.
Loosen
two
Actuator
setscrews and
release stem button latch located on underside of
Actuator cup.
Remove Actuator from valve.
On Relay/positioner equipped Actuators
and E), refer to appropriate procedures under
REPLACE GRADUTROL RELAY/POSITIVE
POSITIONER. Remove feedback spring.
Remove Actuator cover, diaphragm, cup, spring,
retainer, and plate. Refer to appropriate procedures
under REPLACE MAIN DIAPHRAGM for
disassembly.
Replace plate with
Plate 3
Reassemble retainer, spring, cup, diaphragm, cover,
and positioner.
REPLACE VALVE STEM BUTTON
Use the following procedure to replace the stem button on
to 3-inch
Valves and
to 2-inch
Valves. The procedure requires Stem Button 3 12495.
Remove existing stem button.
Replace old button with new button, checking that the
new button is installed at the same height as the old
button.
Reinstall Actuator on valve.
Reconnect air lines and restore system to service,
12
