Emerson EZR Series Pressure Reducing Regulator Instruction Manual download pdf (Page 8)

EZR

COMMISSIONING

Operations concerning the integral slam shut version are in italic.

All interventions on equipment should only be performed by

qualified personnel

PRELIMINARY VERIFICATIONS

Start-up positions

• Inlet and outlet valves

Æ Closed

Verify the absence of pressure between inlet and outlet valves

• Slam shut valve plug

Closed

• Pilot A

Æ Unloaded

• Restriction B

Æ START position

Slam shut set point verification

Using the atmospheric valve, inject a pressure equal to the pressure

required for the regulator

• 1

release relay stage

Æ Set (Stage 1)

• Slam shut valve plug

Æ Open (Stages 2 & 3)

Æ Progressively increase the pressure to

reach tripping

Æ Adjust setting if necessary (NTAOS2)

Note the set point value on the equipment

or mark it on a commissioning document

Positions before commissioning

• Impulse line isolating valve

Æ Open

• Impulse line atmospheric valve

Æ Closed

• Slam shut valve plug

Æ Closed

• Servicing valve

Æ Closed

The equipment is ready for commissioning

COMMISSIONING (Act slowly)

• Inlet valve

Æ Open very slowly

• 1

release relay stage

Æ Set (Stage 1)

• Slam shut valve plug

Æ Bypass (Stage 2)

Æ Open (Stage 3)

B22

B20

Triggered

position

Stage 1

Stages 2 and 3

• Servicing valve

Æ Open slightly

• Pilot

Æ Screw to set outlet pressure

• Outlet valve

Æ Open slowly

• Restriction

Æ Set to "RUN" by successive fractions 2, 4 or 6

• Servicing valve

Æ Closed

The equipment is commissioned

It is recommended to seal the release relay

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Emerson EZR Series Pressure Reducing Regulator Instruction Manual Page 8

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