KvdW Mirage Idro Duette: sudden thermosiphon stall!

#1: Post by **chris_n** » January 10th, 2016, 6:05 pm

I recently moved my machine over to a new bar (barista capsule) and I suspect air somehow got into the system and it's causing very erratic behavior. (low group temp, erratic flow rate, inconsistent between both groups)

is there a prescribed procedure for bleeding the air out of the brew system? I want to approach this as systematically as possible so as to not exacerbate the situation.

help please!

#2: Post by **JohnB.** » January 10th, 2016, 6:41 pm

This is covered on pg. 17 of the Idro service manual. Do you have a copy? If not PM me your email & I'll send a copy.

January 10th, 2016, 6:50 pm

thanks johnB!

I do have the manual, and i have done this. however it doesn't seem to be fixing the problem!

I will try it once again tonight and report back...

#4: Post by **JohnB.** » January 10th, 2016, 6:54 pm

If you have a filter set up on the line feeding the Idro perhaps the issue lies there??

January 10th, 2016, 6:57 pm

yes i completely agree! tonight i'm going to purge all the water from the filter/accumulator setup and re-prime that.

ALONG with cold start air purge of the idro according to kees manual pg 17.

will report back!

January 11th, 2016, 2:07 pm

Unfortunately the problem still is there.

More details:

The water debit of the 'stalling' group drops to about half that of the non-stalled group. Aka very slow flow rate.

Any other ideas?

#7: Post by **JohnB.** » January 11th, 2016, 5:07 pm

If each group has it's own needle valve controlling the water feed you might try opening up the one controlling the group with the flow issue. Maybe some debris from your new filters got into the machine & is partially clogging the feed? If it worked fine before the move & you haven't damaged the machine it has to be something pretty simple.

January 11th, 2016, 9:55 pm

my version is pretty barebones and doesn't have electronic group flush nor adjustable thermosiphon needle valves.

i'll continue to troubleshoot and update this thread if anything comes up

January 11th, 2016, 10:16 pm

Have you tried to call or email KvdW?

January 11th, 2016, 11:47 pm

^ yep i've been emailing back and forth with one of the R&D guys regarding other things but they have not responded to this inquiry yet.