Coordination issues between departments have led to jokes!
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A new unit here is undergoing single-unit testing; electrical checks were carried out to determine whether the pump was rotating in the correct direction. The process engineer said it should rotate clockwise (meaning viewed from the pump outlet), but the electrical supervisor, looking from the direction of the motor, found that there was no indication of the rotation direction, and the motors of the old centrifugal pumps were connected in the wrong way. I brought this up, but he assured me that there was no problem. Since the process engineer said it should rotate clockwise, I didn’t insist further (due to a character flaw of mine)； As a result of the joint testing, it was found that several of the old pumps could not achieve sufficient pressure – the pressure only reached 2 kilograms. They said that this is just how old pumps behave; they were operated for 1 day, and fortunately the impeller cover did not come off, otherwise an accident could have occurred. I talked to the manager today (I might have to offend the electrical supervisor :Q)
You should contact the equipment manufacturer to adjust the motor direction according to the equipment’s requirements. The rotation direction of the motor in most devices is clockwise when viewed from the back of the motor.
Haha, I’ve been looking at it for ages but still don’t understand it. I don’t know what the original poster is talking about? It can truly be said that different fields are as separate as mountains.
For electrical issues, handle them through the electrical department; if there are problems, just let the electrical team take care of it. It’s not acceptable for everyone to act in a bossy manner, as that affects work. If the motor is rotating in the wrong direction, just adjust two of the three phases of the electrical supply.
The rotation direction of a centrifugal pump can be determined from its inlet and outlet; generally, it rotates downward from the inlet side and upward from the outlet side (AY pumps).
There should be a steering arrow marked on the device, right?
This is just the beginning; if it’s appliances versus instruments, it’s likely that neither side will admit to having any problems. Later on, it’s unclear who will notice the issue and fix it quietly, after which driving will be possible again.
This estimate is inconsistent with the problem
Without discussing whether it’s reversed or not, on the production floor, it might be better to discuss certain things privately. The electrical workshop will think that you are complaining to the boss, and there will be conflicts in future cooperation.
You can’t stick to your principles, just laugh at it, and then even file a complaint – I don’t like such people (those who shirk responsibility).
I think it’s not a matter of departmental cooperation; it’s a technical issue.
To simplify a complex issue, the question you’ve raised is one of common sense: the rotation direction of the motor must match that of the centrifugal pump. As for the rotation direction of the centrifugal pump, it can be determined by looking at the volute When encountering such disputes, it is necessary to shift focus to the specifications of the manufacturing process; the forward or reverse rotation of the motor generally has no impact on it (of course, some motors have blades at the back, and when the rotation direction differs from that of the blades, it can affect the motor’s cooling temperature; in such cases, the rotor needs to be reversed and the motor reassembled). The pump can only rotate in one direction; it definitely won’t work if turned the other way! Common sense! It’s really common sense! This post was last edited by ddfmy on 2009-3-26 17:31]
The process supervisor must conduct an on-site inspection and confirmation before starting the operation! ! ! ! ! ! !
As an electrical technician, not knowing whether a pump rotates forward or backward shows that his skills are extremely poor.
New devices, new people, new procedures – everything is new.
During testing, not only the centrifugal pump but also all motors of the transmission equipment should be manually rotated first; power should only be supplied after it is confirmed that they can be rotated manually. Electrical technicians should also measure the current and verify whether the motor rotates in forward or reverse direction.
There’s a group of idiots who could do such things; I don’t know what to say about them. But LZ, your personality isn’t very pleasant – if you can change it, do so; that way you’ll be a good comrade.
There should be arrows on the pump to indicate the direction, and before starting up the pump, it should be tested by turning it briefly to confirm the direction, allowing the operator to make a judgment
In fact, those with practical experience know that the simplest methods are to listen to the sounds, measure the current, check the pressure, and observe the flow rate! These are enough.......