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
release relay stage
st
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
release relay stage
st
Set (Stage 1)
• Slam shut valve plug
Bypass (Stage 2)
Open (Stage 3)
B22
INLET PRESSURE
MODULATED PRESSURE
OUTLET PRESSURE
Figure 12. Type EZH-OS2 Regulator
B20
Triggered
position
Figure 13. Setpoint Verification Phase
• 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
Type EZR
Stage 1
Stages 2 and 3
9