Emerson Y690VB Manual de instrucciones descargar pdf (Pagina 5)

Y690VB Series

10. Install the spring case assembly (key 3) and

control spring (key 6) on the diaphragm casing

(key 4) so that the vent assembly is correctly

oriented, and secure them with the spring case

cap screws (key 24) and hex nuts (key 23, not

shown) to nger tightness only.

11. Install the upper spring seat (key 19) and the

adjusting nut (key 20) turning clockwise until

there is enough control spring (key 6) force to

provide proper slack to the diaphragm (key 10)

and attached parts. Using a crisscross pattern,

nish tightening the spring case cap screws

(key 24) and hex nuts (key 23) to 160 to 190

inch-pounds (18 to 21 N•m) of torque. Then

nish turning the adjusting nut to the desired

outlet pressure setting.

12. Install a replacement closing cap gasket (key 25)

if necessary, and then install the closing cap

(key 22).

Type Y690VBM

Key numbers are referenced in Figure 4.

1. Remove the closing cap (key 22) and turn the

adjusting nut (key 20) counterclockwise until all

compression is removed from the control spring

(key 6). If the only further maintenance is to

change the control spring, skip to step 11.

2. Remove the spring case cap screws (key 24) and

hex nuts (key 23, not shown) and lift off the spring

case assembly (key 3).

3. Remove the diaphragm (key 10) and attached

parts by tilting it so that the pusher post (key 8)

slips off the lever assembly (key 16). To separate

the diaphragm (key 10) from the attached parts,

unscrew the diaphragm hex nut (key 21). If

the only further maintenance is to replace the

diaphragm parts, skip to step 8.

4. To replace the lever assembly (key 16), remove

the machine screws (key 17).

5. To replace the valve stem (key 14) or stem seal

O-ring (key 30) perform body area maintenance

procedure steps 1 through 4 and pull the valve

stem out of the guide insert (key 18).

6. Lightly grease the replacement stem seal

O-ring (key 30) and install on the valve stem

(key 14). Install the valve stem by pushing it

into the guide insert (key 18) and perform body

area maintenance procedure steps 5 through 7.

7. Install the lever assembly (key 16) into the valve

stem (key 14) and secure the lever assembly

(key 16) with the machine screws (key 17).

8. Reassemble the diaphragm assembly in the

following order:

Pusher post (key 8)

Diaphragm head gasket (key 45)

Diaphragm head (key 7)

Diaphragm (key 10)

Diaphragm head (key 7)

Washer (key 36)

Diaphragm nut (key 38)

Secure with 5 to 6 foot-pounds (7 to 8 N•m) of torque.

9. Install the pusher post (key 8) plus attached

diaphragm parts onto the lever assembly (key 16).

10. Install the spring case assembly (key 3) and control

spring (key 6) on the diaphragm casing (key 4)

so that the vent assembly (key 26) is correctly

oriented, and secure them with the spring case

cap screws (key 24) and hex nuts (key 23, not

shown) to nger tightness only.

11. Install the upper spring seat (key 19) and adjusting

nut (key 20). Turn adjusting nut clockwise until

there is enough control spring (key 6) force to

provide proper slack to the diaphragm (key 10)

and attached parts. Using a crisscross pattern,

nish tightening the spring case cap screws

(key 24) and hex nuts (key 23, not shown) to 160

to 190 inch-pounds (18 to 21 N•m) of torque. Then

nish turning the adjusting nut to the desired outlet

pressure setting.

12. Install a replacement closing cap gasket (key 25)

if necessary, and then install the closing cap (key 22).

To Convert Constructions

Type Y690VB to Type Y690VBM:

New parts required: keys 30, 31, and 33

1. Remove pipe plug (key 27) from the diaphragm

casing (key 4).

2. Refer to steps 1 and 3 in the Body area

maintenance section.

3. Insert the throat seal O-ring (key 31, Figure 4) and

one machine screw (key 33).

1 2 3 4 5 6 7 8

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Emerson Y690VB Manual de instrucciones Pagina 5

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