Koolance PC3-420SL - Manual (Page 17)

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The liquid coolant in your system should be emptied for any of the below reasons:
1. To Keep it Clean - Koolance recommends replacing the liquid coolant once
every 12 months. The coolant should also be replaced if it becomes contaminated
or significantly changes color.
2. Upgrading Coolers - Whether you are adding or removing liquid coolers,
upgrades can be performed more easily with a dry system.
3. Shipping - Koolance recommends draining the liquid coolant if the system is to
be shipped or transported in a method other than by hand.
(NOTE: In situations #2 and #3 above, the liquid coolant can later be reused if
cleanly bottled.) Additional coolant may be purchased from your local Koolance
dealer.
Draining & Maintenance
Remove the tubing from a single cooler nozzle
connection within the chassis and hold it over a
1-Liter container.
Due to pressure variance, most of the liquid will
not fall out until the reservoir refill tap has been
unscrewed.
Filling & Maintenance
CAUTION
:
Because of the risk of leakage, Koolance recommends
removing computer hardware before draining your system.
!