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Temperature and Pressure Reducing Device - Fault Analysis and Troubleshooting Methods
Update Time：2024-05-06Number Of Views：

1. Oscillation of the actuator

Fault analysis and troubleshooting methods:

a、 The steam parameters (pressure, temperature, flow rate) are unstable.

b、 The dead zone of the secondary pressure regulator is too small, so increase the SD (usually set to around 3, i.e. the dead zone is 3%) (check whether the motor brake and position signal are normal first).


2. Reverse action of the actuator

Fault analysis and troubleshooting methods:

The positive and negative effects of the PID instrument are set incorrectly.


3. Excessive drift and oscillation of secondary temperature from the set value

Fault analysis and troubleshooting methods:

When the steam parameters are unstable and the flow rate is too small, and it oscillates due to the low flow rate, adjust the throttle valve of the feedwater system appropriately to regulate it.

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