Emerson CS800 Manual de Instruções Página 19

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CS800 Series
19
Note
When disassembling a CS800 Series
regulator, lift the upper spring case straight
up in order to avoid hitting the stem (key 11).
5. Slide the diaphragm head assembly (key 55) away from the
body (key 70) to unhook the pusher post (key 50) from the
lever (key 10). Lift off the diaphragm head assembly.
6. Remove the two lever retaining screws (key 14). Lift
lever up slightly and then slide in the direction away
from the body. Once the lever pin (key 13) has cleared
the lower actuator the lever can be lowered and at the
same time rotated upward to allow it to be removed from
the slotted stem (key 11).
7. See Figure 14. Remove the disk retainer clip (key 36B) and
then remove the disk assembly (key 36). Remove the stem
(key 11) by sliding it in the direction away from the body.
8. Replace stem O-ring (key 12) making certain to
apply lubricant.
9. Reassemble in the reverse order.
Note
When placing the diaphragm assembly into
position in the lower casing, make sure that
the pusher post is hooked on the lever. After
the diaphragm assembly is hooked to the lever,
rotate the diaphragm so that the diaphragm and
lower casing holes are aligned.
See Figure 12, always tighten bolts in a
cross pattern.
10. Reassemble the remaining parts by following
steps 1 to 3 in reverse order.
Disassembly to Replace Valve Disk and
Orice (See Figure 12 and 17)
1. Remove the four hex bolts (key 71) which hold
the lower spring case (key 9) to the body (key 70).
Separate the lower spring casing from the body.
2. Check the body O-ring (key 19) for wear and replace
as necessary.
Note
There are multiple disk assemblies based
on construction and these are identied by
color. See Tables 13, 14 and 15 for direction
in selecting appropriate disk color. Product
performance will be changed if the incorrect
disk assembly is used.
3. Examine the disk assembly (key 36) for nicks, cuts and
other damage. To replace, remove the disk retainer clip
(key 36B) and slide the disk assembly off of the stem
(key 11).
4. See Figure 17.
a. If the seating edge of the CS800 Series orice (key 25)
is nicked or rough, remove the orice from the body
using a 2 in. / 50 mm socket wrench.
b. If equipped with a CS805/CS806 Series
Secondary Seat orice assembly, see the following
section “Disassembly to Replace Valve Disk
and Secondary Seat orice assembly” for
maintenance instructions.
Note
If the orice is replaced with a different size,
change the nameplate to state the new size
and maximum inlet pressure (see Table 4).
5. Replace O-ring (key 82). Apply anti-seize lubricant to
the external threads of the new orice/orice assembly
and reassemble into the body. Install the orice per
Figure 17 and tighten the orice or orice subassembly
into the body per Figure 12.
6. Reassemble the regulator in reverse order of the above
steps. O-ring (key 28, Figure 12) on end of stem (key 11)
should be lubricated before replacing the disk assembly.
This O-ring is not a pressure retaining part but keeps the
disk holder from rattling on the stem.
Note
See Figure 12, always tighten bolts in a
cross pattern.
Disassembly to Replace Valve Disk and
Secondary Seat™ Orice Assembly
(See Figure 12)
1. Remove the four hex bolts (key 71) which hold the lower
spring case (key 9) to the body (key 70). Separate the
lower spring casing from the body.
2. Check the body O-ring (key 19) for wear and replace
as necessary.
Note
There are multiple disk assemblies based on
construction and these are identied by color.
See Tables 13, 14 and 15 for direction in
selecting appropriate disk color. Product
performance will be changed if the incorrect
disk assembly is used.
If the White disk is selected, the open side of
the disk must be directed toward the outlet of
the body as indicated in Figure 7.
3. Examine the disk assembly (key 36) for nicks,
cuts and other damage. To replace, remove the disk
retainer clip (key 36B) and slide the disk assembly
off of the stem (key 11).
4. See Figure 18. Remove the orice assembly from the
body using a 2 in. / 50 mm socket wrench.
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