In my opinion, the best solution for that Brenard releaser is to get rid of it and buy a Lapierere releaser. The mechanics of the Bernard are way too complicated compared to the Lapierre. I have 4 of the Lapierres and they operate year after year with no issues.
I had 3 Bernard verticals my first year on vacuum and had continuous problems with all 3 of them. Got rid of them the second season and went to all Lapierre.
Joe
2004- 470 taps on gravity and buckets
2006- 590 taps on gravity and buckets 300 gph RO
2009- 845 taps on vacuum no buckets, 600 gph RO
2010- 925 taps on vacuum new 2 stage vacuum pump
2014- 3045 taps on vacuum, new 1200 gph RO
2015- 3104 taps on vacuum
2017- 3213 taps on vacuum
3' x 10' oil fired evaporator with steamaway