Mcquay micrtech II default settings

[mid carolina]

I have a customer that has a AGZ065 air cooled chiller with the microtech II controller....... they are in an area that is prone to power losses. The machine enable command is defaulted to the off position. I have read the IOM but cannot find directions on changing the default from off to on.

The machine is a stand alone......does not have any external input for enabling the machine.

Thanks

[steveoo]

set mode to switches and remove jumper on terminals of start stop,and put switch in place of jumper

[steveoo]

mistake,set mode to cool and control mode to switches

[Six]

I have a customer that has a AGZ065 air cooled chiller with the microtech II controller....... they are in an area that is prone to power losses. The machine enable command is defaulted to the off position. I have read the IOM but cannot find directions on changing the default from off to on.

The machine is a stand alone......does not have any external input for enabling the machine.

Thanks

Sould at least have inputs from the pump auxilliary.

[steveoo]

I hope there is a flow switch.And not useing a safty device as a operateing control.

[margitbarot3689]

New query:

1) I wanted to know why VFD chiller performance curves start sloping downwards below 50 percent load? It follow the power = speed ^ 3 law then why is it sloping downwards after 30 percent load?

[freonrick]

New query:

1) I wanted to know why VFD chiller performance curves start sloping downwards below 50 percent load? It follow the power = speed ^ 3 law then why is it sloping downwards after 30 percent load?

what does this have to do with a microtech II controller?

[margitbarot3689]

Nothing. I am new and I did not know where to post my query. It would be great if someone could answer my question though.