Emerson Fisher 3024S, Инструкция по эксплуатации

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Design 3024S Actuator
Instruction Manual
Form 5421
June 1999
6
4. When removing the diaphragm and actuator
springs perform one of the following procedures as
appropriate:
For a Type 3024S Air-To-Open actuator
(figure 7 & 10):
a. Lift off the upper diaphragm casing (key 16)
and remove the springs (key 15).
b. Using a strap wrench or soft-jawed vice and
the actuator stem (key 8), remove the hex nut
(key 14).
c. Remove the diaphragm plate (key 13),
diaphragm (key 11), O-Ring (key 12), pressure
plate (key 10) and the ring halves (key 9).
For a Type 3024S Air-To-Close actuator (figure 6 &
9) :
a. Lift off the upper diaphragm casing (key 16).
b. Using a strap wrench or soft-jawed vice and
the actuator stem (key 8), remove the hex nut
(key 14).
c. Remove the pressure plate (key 10), O-Ring
(key 12), diaphragm (key 11) , diaphragm plate
(key 13) and the ring halves (key 9).
d. Remove the springs (key 15).
1. Carefully slide the actuator stem (key 8) out the
bottom of the lower diaphragm casing (key 1) and
set it on a protective surface to prevent damage to
the O-ring sealing surface.
2. Remove the bellow (key 31), if used.
3. Unscrew the cheese head screws (key 7), then
remove the bushing (key 6).
4. With the actuator disassembled, inspect all parts
for excessive wear and replace as necessary.
Assembly
This procedure assumes that the actuator is
completely disassembled. If it is not, start the
instructions at the appropriate step.
For a Type 3024S Air-To-Open & Air-To-Close
actuator :
1. Before starting assembly, apply Lubriplate
MAG-1 lubricant or equivalent to the O-ring (in the
bushing key 6 and key 12). Install the new bushing
(key 6) and assemble with the cheese head screws
(key 7) onto the lower diaphragm casing (key 1).
Use a torque of 0.4 N S m (0.25 lbf S ft)
2. Carefully slide the actuator stem (key 8) down
through the bushing (key 6) .
3. When installing the diaphragm and actuator
springs perform one of the following procedures as
appropriate:
For a Type 3024S Air-To-Open:
a. Assemble the ring halves (key 9), pressure
plate (key 10), O-Ring (Key 12), diaphragm (Key
11) and diaphragm plate (key 13) as shown in
figure 7 or 10.
b. Apply Loctite 271 or equivalent to the actuator
stem travel stop thread and tighten the travel stop
as follows: Sizes GA 1.21/1.31 tighten to 37 N S m
(28 lbf S ft), size GA 1.41 tighten to 90 N S m (66
lbf S ft).
c. Position the actuator springs (key 15)
symmetrical on the diaphragm plate (key 13) as
shown in figure 3.
For a Type 3024S Air-To-Close:
a. Assemble the ring halves (key 9), pressure
plate (key 10), O-Ring (Key 12), diaphragm (Key
11) and diaphragm plate (key 13) as shown in
figure 6 or 9.
b. Apply Loctite or equivalent to the actuator
stem travel stop thread and tighten the travel stop
as follows: Sizes GA 1.21/1.31 tighten to 37 N S m
(28 lbf S ft), size GA 1.41 tighten to 90 N S m (66
lbf S ft).
c. Position the actuator springs (key 15)
symmetrical on the diaphragm plate (key 13) as
shown in figure 3.
CAUTION
Overtightening the diaphragm cap
screws and nuts can damage the
diaphragm. Do not exceed a torque of
11 N S m (8 lbf S ft) for Size GA 1.21 and
16 N
S
m (12 lb
S
ft) for sizes GA 1.31 &
1.41.