Emerson EZR Series Pressure Reducing Regulator Manuel d'instructions Page 11

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Europe, Middle East, and Africa Document Only
Type EZR
11
B22
Figure 12. Type EZR Startup Schematic
PILOT TYPE
RECOMMENDED TYPE PRX RESTRICTOR AND DAMPER SCREW
SETTINGS FOR LOW FLOW OPERATION
TYPE PRX RESTRICTOR AND DAMPER SCREW SETTINGS
TO AVOID LOW FLOW OPERATION
PRX/120 and
PRX/120-AP Series
Restrictor Screw (B)
1 turn out (counterclockwise) from fully seated for most low ows
2-1/2 turns out (for ows less than 5% of maximum)
Damper Screw (D)
Fully out (counterclockwise) from seated for most low ows
One turn out (for ows less than 5% of maximum)
Restrictor Screw (B)
Fully seated (clockwise) or full out (counterclockwise)
Damper Screw (D)
Full in (clockwise)
Note: Counterclockwise adjustment of the Type PRX restrictor screw will increase proportional band. Adjustment of the restrictor screw will also cause a shift in set
point. Setpoint should be checked and adjusted following restrictor screw adjustment.
Table 10. Type PRX Pilot Adjustment Recommendations
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