The lube oil cooler should be bypassed on an operating auxiliary turbine until the discharge oil temperature reaches what?

The recommended bypass temperature for the lube oil cooler on an operating auxiliary turbine is 100 degrees Fahrenheit. This temperature is important because it ensures the lube oil reaches an optimal operating temperature that can effectively lubricate the turbine's components.

Bypassing the cooler at this temperature allows the oil to circulate without having to be cooled further, which can be beneficial during the initial warm-up phase of the turbine operation. As the temperature approaches 100 degrees F, the oil becomes less viscous, allowing it to flow more freely and provide better lubrication qualities.

Operating below this temperature may result in poor lubrication, leading to increased wear and potential damage to the turbine components. Thus, monitoring the discharge oil temperature is critical to ensure that the lube oil is maintained at optimal conditions for safe and efficient turbine operation.