Start-up and shutdown of the cranking oil pumps for the units at each freezing station
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Could you please explain the sequence for starting and stopping the cranking oil pumps of the units at each freezing station? Thank you!
When starting, first activate the turntable motor and then start the turntable itself! If the order is reversed, it should not be possible to start it. When stopping, first stop the turntable and then stop the turntable motor! It is also possible to directly stop the turntable motor, in which case the turntable will stop as well
First, turn on the oil heater. When the oil temperature reaches a certain level (around 40°C), start the oil pump and open the oil filter; check through the sight glass to ensure everything is working properly, and control the oil temperature and pressure. Once it reaches the cranking position, start the cranking pump. There are usually three settings: forward rotation, reverse rotation, and stop. You can first operate it in forward rotation for a while, then switch to the stop setting, and afterwards engage reverse rotation. Remember to stop it first, as otherwise accidents may occur. Finally, remember to manually return the disc parking position to its original place. Then stop the fuel pump.
I think what was said above is a bit general and not specific enough. When activating the cranking function, it should only be done when the machine is stopped or running; there are prerequisites for enabling cranking, and different conditions apply in various situations. For example, it wasn’t mentioned whether to activate the dry gas seal or the shaft seal steam
The lubricant temperature and pressure are within the specified ranges. With the rotation speed at 0, the emergency shutdown valve of the unit closes; the starting motor is activated to begin shaft turning
A rotation speed of 0 is the most important factor; everything else isn’t that significant. Some disk spinning motors take 30–60 seconds to reach operating speed after being turned on, but it gets better shortly after that. The operation screen shows the logical sequence for turning the disk. Do as instructed. As for the oil pump, just turn it on – there are no inlet or outlet valves or anything like that
Turn the machine around -- start it up -- all parameters are normal -- increase the speed -- operate normally.
First, establish the oil circulation; once the temperature reaches 35–40 degrees, start the shaft turning oil pump to check the rotation of the chiller shaft.
Is there still acceleration when cranking the engine? It’s not just nonsense, right? The allowable oil temperature for turning the gear is generally 30°C. It’s nonsense to say that barring rotation doesn’t occur due to oil circulation issues. It says a group above, but none of them mention the rotation speed being zero. The rotation speed is not 0; try turning the shaft by hand!
Reply to 3# unhnm: What type of aircraft crew are you? How is reverse cranking still allowed?
Reply to 10# z880347730: Ours is piston-type, and the shaft needs to be rotated in both directions