Water chiller must start after power fail
The controller for the pump motor in the water chiller (heat
exchanger) is default set to not start after a power loss. This is
very bad, since there will be no cooling of the systems connected to
the chiller after a power loss, but most systems automatically
starts after a power loss.
Manual
for pump motor
controller
The pump motor controller have to be re-programmed to change this
behaviour.
- Open the water chiller doors
- On the inside of the right hand door is a box containing the
pump motor controller
- The box is opened with a special key or a large screw
driver.
- Here is a picture of the control panel of the controller
-
And here is a schematic of how to change the parameter n47 to
value 2 (was 0). This will set the controller to "Autostart
after power fail".
Follow the green line from top to bottom and out the the
right.
A. Liljeborg, 2020-06-29
Webmaster
Albanova Nanolab