Rancilio EGRO 55 Series, Technical Manual

Page: 82 / 114

6.6 PM GUIDE
- Section 6: Page 9 -
EGRO 55 SERIES TECHNICAL MANUAL
DESCRIPTION OF PARTS:
1. Grounds slide
2. Grounds puck slide
3. Upper Piston Assembly or UPA
4. Lower Piston Assembly or LPA (not pictured)
5. Auger shaft
6. Piston spring plate
7. Piston sensing arm
8. Piston motor
9. Gear box
10. Mounting plate
11. Grounds puck sweeper arm
BREW GROUP ASSEMBLY OR BGA:
the complete brewing module of the Egro
55 series espresso machines.
PISTON ASSEMBLY, UPA OR LPA: The upper and
lower piston assemblies are identical except for the actual
pistons.
UPPER PISTON ASSEMBLY: the
upper piston assembly has a sweeper
arm attached to it.
1
2
3
4
5
6
9
10
7
8
11
VIEW OF THE BOTTOM OF THE
MOUNTING PLATE:
you can access the
gear box through the hole in the bottom of the
mounting plate. This way you can manually
control the piston.