Emerson EZR Series Pressure Reducing Regulator Manuál s instrukcemi stáhnout pdf (Strana 11)

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Type EZR

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

1 2 ... 6 7 8 9 10 11 12 13 14 15 16 17 18

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