Requirements for Operation Turbine

1. Since Drain entry may cause damage to the thrust bearing or blade or other troubles, take due care of drain.
2. When remotely changing the rotational speed, be sure to observe persistenly the tachometer.

If the rotational speed does not change following the speed change operation, immediately stop the speed chenge operation to eliminate the possible cause of trouble as mentioned below.

It must be noted that if the governor motor is kept running after the speed setting dial comes in contact with the upper or lowe limits stopper, the clutch may be damage.

Cause of failure in following the speed change operation. In case of speed-up

• Over load
• Improper steam conditions (especially, excessively low inlet pressure or excessively high exhaust pressure).
• Mechanical trouble.

In case of speed-down

• Mechanical troubles.