What reason the ink tube of my ACHI A3 UV DTF printer is easy to damage?

Normally , The maintenance video will show you it need to used alcohol to do maintenance every week as below video.
https://youtu.be/UDB2LixQ3u8
(The I608 printer has stopped production ,New updated printer is XP600 model , The content 01:52 of video is available for both XP600 and I608 .）

And then Customers think the Isopropyl alcohol is also alcohol .

So customers use 91% Isopropyl alcohol to clean printer every week .

but customer did not know the Isopropyl alcohol is to corrosion and damage the parts of printer .

Just one or two month , Customer will find the ink tube is easy to leak ink .

Even more, The mainboard , print head , and other parts is also easy to damage .

So do not use Isopropyl alcohol to clean printer any more , please prepare 75% ethyl alcohol to do maintenance .

That is better option after our engineers many years test .

If can not get 75% ethyl alcohol ,  The ethyl alcohol need to be more than 50% at least.