Emerson CS800 Bedienerhandbuch PDF herunterladen (Seite 18)

CS800 Series

Maintenance on CS800 Series

Disassembly to Replace Diaphragm

(See Figures 12, 13 and 15)

1. See Figure 15. All Types except Type CS850, remove

the closing cap (key 60). Turn the adjusting screw

(key 65) counterclockwise to ease spring compression.

Remove adjusting screw and spring (key 38).

2. See Figure 15. Type CS850, loosen hex locknut

(key 107). Turn adjusting screw (key 65)

counterclockwise to ease spring compression. Unscrew

bonnet (key 104) and remove. Remove spring (key 38).

3. See Figure 12. Remove the nuts (key 16) and hex bolts

(key 15). Separate the upper spring case (key 1) from

the lower casing (key 9).

Note

When disassembling a CS800 Series

regulator, lift the upper spring case straight

up in order to avoid hitting the stem (key 11).

4. See Figure 12. 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.

5. See Figure 13. Non-Relieving units, unscrew the bolt

(key 45). The bolt threads in to the pusher post (key 50)

and holds the non-relieving diaphragm assembly together.

Unscrewing the bolt will separate the diaphragm retainer

(key 47), the lower spring seat (key 43) and diaphragm

assembly (key 55) and pusher post (key 50).

CAUTION

Use caution when unscrewing the relief valve

stem as the relief valve spring is in compression.

See Figure 13. Internally Relieving units, unscrew the

relief valve stem (key 44). The relief valve stem threads into

the pusher post (key 50) and holds the relieve assembly

together. Unscrewing the relief valve stem will separate the

E-Ring (key 48), the spring retainer (key 42), the relief spring

(key 41), the lower spring seat (key 43) and the diaphragm

assembly (key 55) onto the pusher post (key 50).

See Figure 13. Token Relieving units, measure and

note for reassembly, the distance between the top of the

diaphragm stem (key 44) and the top of the token relief

hex nut (key 46). Unscrew token relief nut with a 13 mm

wrench. Remove the spring seat (key 42) and relief spring

(key 41). Unthread the second lower nut (key 46). Pull the

pusher post assembly (key 50) through the diaphragm

assembly. Replace the pusher post O-ring (key 52) and

diaphragm stem O-ring (key 115). Unscrew the pusher

post nut (key 110), which allows for separation of the lower

spring seat (key 43), diaphragm assembly (key 55) and the

pusher post retainer (key 111).

6. Reassemble in the reverse order of step ve. For the

Token Relief Assembly, ensure the distance from the

top of the diaphragm stem (key 44, Figure 13) to the top

of the token relief hex nut (key 46) is the same as before

disassembly. When assembling the diaphragm (key 55A)

onto the diaphragm head (key 55B), apply a small amount

of adhesive on the outer at portion of the diaphragm head

that contacts the diaphragm, as indicated in Figure 13.

Place the diaphragm head on the diaphragm and check

to ensure the hole in the diaphragm head with the hole of

the diaphragm are concentrically aligned.

7. Place the diaphragm assembly into position in the

lower casing; make sure that the pusher post is

hooked on the lever.

Note

See Figure 12. To ease in the process of

inserting the diaphragm assembly into

the lower case (key 9) and hooking it onto

the lever (key 10), loosen the four body

bolts (key 71). This will allow the lever to

be rotated upward in order to slide the

diaphragm assembly (key 55) onto the lever.

8. After the diaphragm assembly is hooked to the lever,

rotate the diaphragm so that the diaphragm and lower

casing holes are aligned.

9. Reassemble the remaining parts by following

steps 1 to 3 in reverse order.

Note

See Figure 12, always tighten bolts in a

cross pattern.

Disassembly to Replace Valve Stem O-ring

(For externally registered Types only, e.g.,

Type CS800EN) (See Figures 12, 14 and 15)

1. See Figure 12. Remove the four body bolts (key 71) and

remove the body (key 70).

2. Check the body O-ring (key 19) for wear and replace

as necessary.

3. See Figure 15.

a. All types except Type CS850, remove the closing

cap (key 60). Turn the adjusting screw (key 65)

counterclockwise to ease spring compression.

Remove adjusting screw and spring (key 38).

b. Type CS850, loosen hex locknut (key 107). Turn

adjusting screw (key 65) counterclockwise to ease

spring compression. Unscrew bonnet (key 104) and

remove. Remove spring (key 38).

4. See Figure 12. Remove the nuts (key 16) and hex bolts

(key 15). Separate the upper spring case (key 1) from

the lower casing (key 9).

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