30RB080 air cooled chiller

[akirasho]

Hey Guys,

i am using the 30RB080 air cooled chiller.....How do you guys run the fan motor in full speed? i have totally modified my chiller into DOL start and stop system and i am stuck in testing the fan motor....It seems it need a PCB board to give contact it to run at full speed? Anyone has overcome this issue....Please get back to me ASAP as i am urgently requiring some answers

thanks

[beenthere]

made this its own thread, and moved it to the open chiller forum.

[mikeacman]

Not sure what you mean by "DOL"...please spell it out

The fan motor...is it connected to a motor master 5 or in other terms a small variable frequency drive?

Does this have comfort link controls ?

If the fan is connected to a vfd or MM5 the controls supply an output to ramp the fan(s) up or down ... In test mode these fans won't necessarily run at full speed.

I wish I could help but need more info...

[chilbrig]

The fan motors are controlled by the Fan Board. You shouldn't need any extra boards to make them run. If you are trying to test the fans operation in the test mode, and you have a VFD, then there are two imputs in the test mode. Pick the fan you want to test then turn in on. Then scroll down to the first setting below the fans, and imput your fan speed for the VFD. I'm not sure what you mean by DOL either.

[R123]

Please tell us what you mean by DOL.

[Screwit]

Please tell us what you mean by DOL.

R123, DOL (Direct on Line) is another terminolgy for Across the Line starters

[R123]

R123, DOL (Direct on Line) is another terminolgy for Across the Line starters

That must be a down under term.

[Screwit]

That must be a down under term.

Yep, Down under, NZ, Asia and I think Europe, petty much everywhere except the Americas

[alcomech]

That must be a down under term.

DOL. I just learned something new.

_______________________
Understand the symptoms and you will find a solution.

[OpenDrive]

You should be able to go into test and use the VAR_A command to ramp the fan up.