Bernard releasers are the issue. When I stated with vacuum, I bought 3 Bernard releasers. I had problems with them all season. I sold them and bought Lapierre releasers. Much simpler mechanism. In my opinion, horizontal or vertical, Bernard releasers are nothing but problems.
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