Emerson EZH and EZHSO Series Pressure Reducing Regulators Manuál s instrukcemi Strana 18

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EZH and EZHSO Series
18
to the upper spring seat (key 73) and lift up and
remove the sleeve assembly (key 14). Lift off the
diaphragm/plates system. Remove O-ring (key 15)
and replace it as needed. Inspect diaphragm for
damage or wear; remove screws (key 16), lift off
inlet plate (key 18) to replace diaphragm (key 20)
and O-ring (key 17).
4. Align screw holes on the cap (key 70) to the
sleeve guide screw (key 66). Remove sleeve
guide (key 61) utilizing cap (key 70) to unscrew.
Inspect O-rings (keys 9 and 64) for damage or
wear, replace anti-friction ring (key 8) and O-ring
(key 9) if necessary. Unscrew 8 cap screws (key 6)
and remove crush washers (key 67). Lift off lower
casing (key 5). Inspect O-ring (keys 7 and 63) for
damage or wear. Replace if necessary.
5. Remove cage (key 78).
6. Remove seat ring (key 2). Inspect seat ring
for damage or wear. If damaged, replace with
new parts.
7. Remove O-ring (key 34) from body. Inspect
for damage or wear. If damaged, replace with
new parts.
8. Lubricate O-ring (key 34) and replace into
the body.
9. Place seat ring (key 2) on top of O-ring (key 34) in
body with the curved side down and seat edge up.
10. Place cage (key 78) on the top of seat ring (key 2).
11. Place lower casing (key 5) on top of the body.
Replace washer (key 67) and tighten cap screws
(key 6). Screw sleeve guide (key 61) into lower
casing (key 5) utilizing cap (key 70).
12. Lubricate the sleeve (key 14) in the upper plate
contact area and assemble the diaphragm/plates
system on the sleeve system. Tighten screws
(key 16) using a “star” criss-cross pattern for ve
times until proper specied torque is achieved.
13. Screw the special screws (key 68) – already on
the sleeve – to x the diaphragm/plates system
on the sleeve system. See Torque Specications
(Table 4) for proper torque values. Tighten screws
(key 68) using a “star” criss-cross pattern for ve
times until proper specied torque is achieved.
14. Lubricate lower casing (key 5) on the diaphragm
contact area.
15. Carefully insert the trim system into the sleeve
guide (key 61) utilizing the eye-bolts (key 35)
that ts in the upper spring seat (key 73)
threaded hole.
16. Lubricate the diaphragm (key 20) on the upper
casing contact area.
17. Lubricate and mount the O-ring (key 69) on the
cap (key 70). Lubricate and mount O-rings (key 9)
and anti-friction rings (key 8) inside the cap.
Unscrew the eyebolts (key 35) from the upper
spring seat (key 73) and carefully place the cap on
the upper actuator casing (key 11). Align the travel
indicator hole on the cap to the upper actuator
casing travel indicator hole. Lubricate cap screws
(key 77) and attach cap (key 70) to the upper
casing (key 5) using cap screws (key 77). Bag
diaphragm at to lower actuator casing diaphragm
ange contact area. Carefully place the upper
actuator casing on the top of the lower actuator
casing/trim system using a stud to guide.
Note
Rotate the upper casing such that
the outer holes for sensing lines are
perpendicular to gas ow and outer
holes of lower casing.
18. Lubricate threads on bolts (key 21).
19. Bolt together the upper and lower actuator casings
(keys 11 and 5) using cap screws (key 21),
washers (key 22) and hex nuts (key 23). See
Torque Specications (Table 4) for proper torque
values. Tighten cap screws using a “star”
criss-cross pattern for ve times until proper
specied torque is achieved.
20. Mount O-ring (key 75) on the cap (key 70).
21. Screw the eyebolts (key 35) on the cap (key 70).
22. If present, set the stem (key 139) through the
casing hole and tap it into the groove in the
diaphragm plate (key 18). Slide the travel indicator
tting (key 141) over the stem and tighten to the
cap (key 70).
NPS 4 / DN 100 Actuator Assembly
Maintenance (EZHSO Series Only)
(Refer to Figure 9)
1. Remove closing cap (key 146), unscrew 2 nuts
(key 151). If present, remove travel indicator
assembly by unscrewing the travel indicator tting
(key 141), then pull out the stem (key 139). Please
see the Travel Indicator Maintenance section for
the proper maintenance procedure.
2. Remove hex head cap screws (key 21), washers
(key 22) and hex nuts (key 23). Carefully lift
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