How can I refill the Robust CISS / RISS?

ROBUST CISS Preparing the ROBUST V.4 tanks NEW!Robust CISS
**The Small Plugs (Tanks Plugs) need to be left open at all times after you install the system 
(update 26-08-2016) NEW!

***After install your CISS:

The Small Plugs (Tanks Plugs) that need to be left open all time.

Just for Hp 02 cartridges 2 plugs need to be left open all time.

 Warning : 
Never rise
 the external tank higher than your printer (even temporarily)!


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