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HI,
On our GE MS5001 gas turbine, we've observed that the lube oil bearing header pressure is 2.1bar when auxiliary pump(QA) is running but it drops to 1.5bar when the main lube oil pump which is shaft driven is running. the main lube oil pump discharge pressure is observed to be 6bar which is almost the same with the control oil pressure indicating that the oil discharge pipe is not clogged and the pressure relief valve is not malfunctioning.
we have tried to adjust the set point of the bearing header regulator but this still did not resolve the situation. Please what could be the possible reasons why we are having low bearing header pressure?
thanks.
On our GE MS5001 gas turbine, we've observed that the lube oil bearing header pressure is 2.1bar when auxiliary pump(QA) is running but it drops to 1.5bar when the main lube oil pump which is shaft driven is running. the main lube oil pump discharge pressure is observed to be 6bar which is almost the same with the control oil pressure indicating that the oil discharge pipe is not clogged and the pressure relief valve is not malfunctioning.
we have tried to adjust the set point of the bearing header regulator but this still did not resolve the situation. Please what could be the possible reasons why we are having low bearing header pressure?
thanks.