It is advised to vacuum the chiller every month to keep the printer in the best condition. Vacuuming the chiller is part of periodic maintenance so the operator panel gives a warning when you should vacuum the chiller. Always check the fluid level when you vacuum the chiller.
The procedure is explained in the video Vacuum the chiller, click here to view.
Use Colorado 1630 prescribed:
Screwdriver (Torx-25)
Vacuum cleaner with a brush head
Vacuum the surface with care, make sure you do not damage the condenser surface.
Keep the area next to the chiller free. Do not store any items there, as it can result in insufficient cooling and damage to the machine.