Turbine barring
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If the barring motor doesn’t rotate, how can the shaft be turned?
What kind of equipment? Some devices equipped with reducers are difficult to turn; use chain pliers, or turn the shaft at its end, but a handwheel for turning is needed
Is it a compressor, a fan, or a pump? Under what operating conditions is it necessary to turn the shaft? If it’s not necessary, then just service the shaft-turning device
If the motor doesn’t rotate, it’s a problem related to timing of the motor; generally, there are electric and manual methods for turning the motor, so there’s no need to worry.
There is nothing like what you mentioned. It is a turbine barring gear
How to manually turn the turbine? Seeking advice
The turbine combines manual turning gear with electric turning gear, and there is a selector switch for it. By setting the transfer switch to the manual position, manual turning of the shaft is possible.
The end fan of the motor in the crank mechanism is usually turned manually.