Emerson Y695VR Manual de Instruções descarregar pdf (Página 5)

Y695VR Series

Table 1. Vacuum Control Pressure Ranges and Spring Part Numbers (Spring, Key 6)

VACUUM CONTROL

PRESSURE RANGE

SPRING PART

NUMBER

SPRING

COLOR

BACK DISK SPRING

PART NUMBER

CHANGE IN CONTROL

PRESSURE TO WIDE-OPEN

SPRING WIRE

DIAMETER

0 to 4-inches w.c. (0 to 10 mbar)

(1)

0N039427222 Unpainted 1E984637022 1-inch w.c. (2 mbar) 0.062-inch (1,57 mm)

0.5 to 0.75 psig (0,034 to 0,052 bar) 0N086027022 Unpainted

18B0911X012

5.5-inches w.c. (14 mbar) 0.105-inch (2,67 mm)

0.15 to 1.75 psig (0,01 to 0,12 bar) 0N086127022 Unpainted 0.44 psig (0,03 bar) 0.125-inch (3,17 mm)

0.25 to 2.75 psig (0,017 to 0,19 bar) 0N022027022 Dark green 0.63 psig (0,043 bar) 0.135-inch (3,43 mm)

1.5 to 4.75 psig (0,10 to 0,33 bar) 0N004327022 Yellow 1.44 psig (0,10 bar) 0.172-inch (4,37 mm)

3 to 12.8 psig (0,21 to 0,88 bar) 1D141827012 Blue 3.88 psig (0,27 bar) 0.207-inch (5,26 mm)

1. Do not use uorocarbon (FKM) diaphragm with this spring at diaphragm temperatures lower than 60°F (16°C).

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

the diaphragm (key 10) from the attached parts,

unscrew the diaphragm nut (key 21). If the only

further maintenance is to replace the diaphragm

parts or change the control spring (key 6), 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) and stem seal

O-ring (key 30), perform steps 1 and 2 of Body

Area Maintenance and then pull the valve stem out

of the diaphragm casing.

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).

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).

Note

Pusher post assembly (key 8) includes

the pusher post and adjusting stem.

Assembly is xed together at the factory.

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 assembly (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 is correctly

oriented, and secure them with the spring case

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

shown) to ngertightness only. Install upper spring

seat (key 19) and adjusting nut (key 20).

11. Turn the adjusting nut (key 20) 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 (key 20) 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

The Type Y695VR to the Type Y695VRM:

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).

4. Insert the stem seal O-ring (key 30) by following

steps 1 through 7 and 9 through 12 in the

Diaphragm and Spring Case Area

Maintenance section.

1 2 3 4 5 6 7 8

Y695VR Series 1

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Emerson Y695VR Manual de Instruções Página 5

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