My Brew Unit is Squeaking While Brewing or Rinsing
This article discusses what to do if you hear squeaking sounds from the brew unit in your Gaggia Brera while brewing or rinsing.
If you hear a squeaking sound while brewing or rinsing, your brew unit o-ring likely needs to be lubricated. In some cases, your brew unit o-ring may need to be replaced. You can use Gaggia Food-Safe Lubricant or a petroleum jelly such as Vaseline to lubricate the o-ring. Only a little bit of lubricant is needed.
The brew unit brews, as the name suggests, but, just as importantly, it's also responsible for tamping ground coffee into a consistent puck. Inside the unit are two tracks which should be lubricated every six months or so for best results in the cup.
Watch the video below to get the for more information on food safe lubricant and how to keep the brew unit functioning smoothly:
Espresso Machine Maintenance -- How To Lubricate A Brew Unit