HP TURBINE INSTALLATION AND MAINTENANCE GUIDE
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3” - 20” HP Turbines
The calibration adjusting stem is located inside the register mounting ring for the 3”-20” HP Turbines. Should
the turbine element require field calibration, follow these steps:
1
Remove seal pin from register and twist off register (3”-10); or remove lead seal and unscrew
register adapter screws (12”-20”).
2
Loosen lock nut on adjusting stem by turning counter-clockwise.
3
Insert slotted screwdriver into slot in top of adjusting stem and
a
Turn clockwise to decrease registration, or;
b
Turn counter-clockwise to increase registration.
Turning the adjustment stem 15 in either direction results in approximately 1% change in registration. The
full range of the adjustment stem is 180 (see Figure 2.3).
Figure 2.2 1-1/2” and 2” HP Turbines
Figure 2.3 3” - 20” HP Turbines
