Historique de l'étape n° 9 de Starbucks Barista Teardown

Modifications apportées à l'étape #9

Modifié par Andrew Bookholt — 31 juil. 2009

	[* icon_note] We will now focus on opening the heart of the Barista: the boiler.
	[* black] Remove the four hex bolts securing the brew head to the boiler assembly.
	[* black] Lift the brew head off the boiler.
-	[* ~~red~~] Remove the single Phillips screw securing the perforated plate and gasket to the boiler housing.
+	[* black] Remove the single Phillips screw securing the perforated plate and gasket to the boiler housing.
	[* black] The perforated plate evenly spreads out the steam to evenly brew the ground coffee held in the basket.
	[* black] Use a a large standard screwdriver (we used a washer and a pair of pliers) to remove the one-way valve spring retainer from the bottom of the boiler.
	[* icon_note] The one-way valve spring is tuned to only allow the valve to open when the pressure reaches a certain level, coordinating to the perfect temperature for brewing espresso.