Emerson EZH and EZHSO Series Pressure Reducing Regulators Manual de Instruções descarregar pdf (Página 17)

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Types EZH and EZHSO

MAINTENANCE

For both Types EZH and EZHSO DN 100, never remove or

disconnect the check valve installed between the two casings.

The regulator parts are subject to normal wear and must be

inspected periodically and replaced as necessary.

The frequency of inspection and replacement depends on

the severity of service conditions and on applicable codes

and regulations.

Use silicone grease for O-rings and diaphragm, molybdenum

graphite grease for spring and mechanical parts.

WARNING

To avoid personal injury or property

damage from sudden release of pressure,

isolate the regulator from the pressure

system, and release all pressure from the

pilot and main valve before performing

maintenance operations.

CAUTION

Use proper lifting techniques, when lifting

the upper and lower actuator casings

(keys 11 and 5, Figure 16) off the body

(key 1, Figure 16).

The actuator assembly weighs more than 45 kg.

Main Valve and Actuator Maintenance

Disk Maintenance DN 25, 50, and 80

(Figure 16)

Type EZH Disk Maintenance

1. Remove screws (key 24).

2. Carefully lift the upper actuator casing and lower

actuator casing assembly (keys 11 and 5) off the body

(key 1).

3. Remove the hex socket cap screws (key 33) and spring

lock washers (key 32). Lift off the disk holder assembly

(key 30) and disk retainer (key 31).

4. Remove the O-ring (key 29). Inspect the O-ring for

damage or wear, and replace if necessary. Lightly

lubricate O-ring before placing in the sleeve adaptor

(key 27).

5. Remove the cage (key 3), seat ring (key 2) and O-ring

(key 34). Inspect the O-ring for damage or wear, and

replace if necessary. Lightly lubricate O-ring before

placing in the body (key 1).

6. Set the seat ring (key 2) back in the body (key 1) with

the curved side down and the seat edge up. To check

O-ring (key 7), skip to the Intermediate Flange O-ring

Maintenance section. Place the cage (key 3) on top of

seat ring. The cage will engage the step on the seat ring.

7. Place the disk holder assembly (key 30) and disk

retainer (key 31) on the sleeve adaptor (key 27).

8. Insert the spring lock washers (key 32) and hex

socket cap screws (key 33) and tighten. See Torque

Specication table for proper torque.

9. Carefully lift the upper actuator casing and lower

actuator casing assembly (keys 11 and 5) and place on

the body (key 1). Secure the screws (key 24).

See Torque Specication table for proper torque.

Type EZHSO Disk Maintenance

1. Remove screws (key 24).

2. Carefully lift the upper actuator casing and lower

actuator casing assembly (keys 11 and 5) off the body

(key 1).

3. Remove the hex socket cap screw (key 154). Lift off the

disk holder assembly (key 30).

4. Remove the O-ring (key 29). Inspect the O-ring for

damage or wear, and replace if necessary. Lightly

lubricate O-ring before placing in the sleeve adaptor

(key 27).

5. Remove the cage (key 3), seat ring (key 2) and O-ring

(key 34). Inspect the O-ring for damage or wear, and

replace if necessary. Lightly lubricate O-ring before

placing in the body (key 1). Do not attempt to remove

the sleeve adaptor.

6. Set the seat ring (key 2) back in the body (key 1) with

the curved side down and the seat edge up. To check

O-ring (key 7), skip to the Intermediate Flange O-ring

Maintenance section. Place the cage (key 3) on top of

seat ring. The cage will engage the step on the seat ring.

7. Place the disk holder assembly (key 30) on the sleeve

adaptor (key 27).

8. Insert the hex socket cap screw (key 154) and tighten.

See Torque Specication table for proper torque.

9. Carefully lift the upper actuator casing and lower

actuator casing assembly (keys 11 and 5) and place on

the body (key 1). Secure the screws (key 24).

See Torque Specication table for proper torque.

Disk Maintenance Type EZH DN 100

(Figure 17)

1. Remove screws (key 77).

2. Carefully lift the cap (key 70) off the upper casing

(key 11) and unscrew the eye bolts (key 35) from the

cap (key 70).

1 2 ... 12 13 14 15 16 17 18 19 20 21 22 ... 35 36

Types EZH and EZHSO 1
LABELLING 5

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Emerson EZH and EZHSO Series Pressure Reducing Regulators Manual de Instruções Página 17

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