I have a Atlas Copco ZT 90 VFD drive is bad

by John
(SanAntonio, Tx)

I have a Atlas Copco ZT 90 VFD a service tech says our drive is bad and it will take weeks to get parts.


I need to know can i just run it full load by adding a starter and just let it load / unload as if there was never a VFD on it !

Can this be done ? Thanks !

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Apr 06, 2018
VSD to fixed
by: Doug in s.d.ca.

I don't even know what the frequency range is, but of you try to run it direct, you'll not have any control over the pressure, as that's done by the motor, which wouldn't be talking to the controller.

It would either not make enough air, or too much, and blow the safety valve, whereupon your pressure would drop...

So, no.

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