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CGT GE turning to Lean Lean Negative

CGT GE turning to Lean Lean Negative

(OP)
Good day Gents

We are experiencing as after we increase the Load into Base Load ( 100%) and having DLN converting mode into Premix Steady
almost 2 to 4 times a month the mode switches to Lean Lean Negative in which force us to decrease Load later on increase it again to reach the Ideal Premix steady Status

we trouble shoot DLN Valves this issue so many times but fail to find the root cause, but failed in every direction

RE: CGT GE turning to Lean Lean Negative

Have you called your GE tech rep? Your GE sales rep or engineering sales manager?

Are you a member of a GE Gas Turbine user's group?

RE: CGT GE turning to Lean Lean Negative

was the CTG supplied with auto-tuning and is the fuel gas source a nearby LNG regas facility?

"Nobody expects the Spanish Inquisition!"

RE: CGT GE turning to Lean Lean Negative

Have you seen any changes in fuel gas composition? Change in Hating Value or change in water contents?

Which machine is this? 9E with DLN 1+ or F tech with DLN 2.0 / 2.6 ??? You may need to check fuel nozzles and path...

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