Question for mechanical engineers: Replacing blower motor to a lower rating one

[Monty]

We have a blower with a 25hp motor attached. Last year nasira yung 25hp motor. Since it was an emergency, and we don't have a 25hp motor on hand, the technician replaced it with a 15hp motor. It operated as usual without noticeable drop in performance. Since then, we haven't replaced the motor.

Questions:
1. Could the supplied 25hp motor be too much for our application?
2. What could go wrong by replacing blower motors to a lower hp ones?

Is it off the shelf or custom made? Like 12vdc said, it could be that the system was designed with an allowance; otherwise, you could be looking at an overworked motor.

[CVT]

Is it off the shelf or custom made? Like 12vdc said, it could be that the system was designed with an allowance; otherwise, you could be looking at an overworked motor.

Yes, that is the Factor of Safety..... and should be true for any system design....


"The measure of a man is what he does with power" LJIOHF!

25.7K:shark:

[boybi]

The blower is being used to transfer air from one chamber to another.

Also, I don't know how to call this, but at startup, the motor operates at a lower rpm, and then switches to its normal operating rpm (around 1760rpm) after a while.

So far, it's been operating normally without any noticeable difference in performance.

- - - - - - - - - - - - - - - - - - - - - -

The blower is being used to transfer air from one chamber to another.

Also, I don't know how to call this, but at startup, the motor operates at a lower rpm, and then switches to its normal operating rpm (around 1760rpm) after a while.

So far, it's been operating normally without any noticeable difference in performance.

[RomeoAlpha]

The blower is being used to transfer air from one chamber to another.

Also, I don't know how to call this, but at startup, the motor operates at a lower rpm, and then switches to its normal operating rpm (around 1760rpm) after a while.

So far, it's been operating normally without any noticeable difference in performance.

- - - - - - - - - - - - - - - - - - - - - -

The blower is being used to transfer air from one chamber to another.

Also, I don't know how to call this, but at startup, the motor operates at a lower rpm, and then switches to its normal operating rpm (around 1760rpm) after a while.

So far, it's been operating normally without any noticeable difference in performance.

This is the typical Typical y - delta connection. It is normal for all motors from 5hp above. Some more complicated is the auto - trans. Hehehehe.

Normal lang yan bro, kung gusto mo lagyan mo ng vfd, kaso overkill sa mahal para sa 15hp lang na on/off application.