Emerson Fisher EZR series, Instruction Manual

Page: 9 / 12

• Servicing valve

Open slightly
• Pilot

Screw to set outlet pressure
• Outlet valve

Open slowly
• Restriction

Set to "RUN" by successive fractions 2, 4 or 6
• Servicing valve

Closed
The equipment is commissioned
It is recommended to seal the release relay
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

Closed
Verify the absence of pressure between inlet and
outlet valves
• Slam shut valve plug

Closed
• Pilot A

Unloaded
• Restriction B

START position
Slam shut set point verification
Using the atmospheric valve, inject a pressure equal to the
pressure required for the regulator
• 1
st
release relay stage

Set (Stage 1)
• Slam shut valve plug

Open (Stages 2 and 3)

Progressively increase the pressure to
reach tripping

Adjust setting if necessary (D103683X012_OS2_IM)
Note the set point value on the equipment
or mark it on a commissioning document
Positions before commissioning
• Impulse line isolating valve

Open
• Impulse line atmospheric valve

Closed
• Slam shut valve plug

Closed
• Servicing valve

Closed
The equipment is ready for commissioning
Commissioning
(Act slowly)
• Inlet valve

Open very slowly
• 1
st
release relay stage

Set (Stage 1)
• Slam shut valve plug

Bypass (Stage 2)

Open (Stage 3)
Triggered
position
B20
Stages 2 and 3
Stage 1
Figure 13. Setpoint Verification Phase
B22
Figure 12. Type EZH-OS2 Regulator
INLET PRESSURE
MODULATED PRESSURE
OUTLET PRESSURE
Type EZR
9
Europe, Middle East and
Africa Only