Canon Colorado M Series Operation Manual page 246

Refill the chiller
12. Place the pouring can on the chiller and fill the tank with the liquid.
NOTE
Check the level gauge glass to ensure that you do not refill beyond the top of the green
zone.
13. Close the lid, twist it on tightly.
14. Place the cover back into position.
15. Fasten the left and right screws on top of the cover.
16. Plug the two power supply plugs back into the sockets.
17. Switch the power switch to the 'on' position.
246 Chapter 6 - Maintain the system