REV. 00 - Mar. 07
6.5 SBS
valve
8/9
PRIMEA 2007 Chapter 06
Beverage dispensing
The SBS brew unit valve (see fig. 2) can be used to vary (increasing or decreasing depending
on the position of the knob) the amount of water passing through the brew unit.
This adjusts coffee brewing time (extraction time) and consequently the intensity of taste,
keeping the cream quality constant.
Function
With the SBS valve in the open position, coffee is accumulated in the membrane valve due to a
low back-pressure of the SBS valve. Consequently the membrane valve needle remains in the
maximum open position, due to resistance of the spring. Coffee comes out quickly (see Fig. 3).
With the SBS valve in the closed position, coffee is accumulated on the membrane of the valve
with a consequent increase in pressure in the valve. The spring yields to the back-pressure and
the needle then reduces the coffee passage (see Fig. 4).
Fig.4
Fig.1
Fig.2
Fig.3
Summary of Contents for PRIMEA LINE 2007
Page 3: ...REV 00 Mar 07 CHAPTER 1 INTRODUCTION REV 00 PRIMEA 2007 Chapter 01 ...
Page 5: ...REV 00 Mar 07 CHAPTER 2 TECHNICAL DATA REV 00 PRIMEA 2007 Chapter 02 ...
Page 9: ...REV 00 Mar 07 CHAPTER 3 BRIEF INSTRUCTIONS REV 00 PRIMEA 2007 Chapter 03 ...
Page 15: ...REV 00 Mar 07 CHAPTER 4 DIAGRAMS REV 00 PRIMEA 2007 Chapter 04 ...
Page 16: ...REV 00 Mar 07 4 1 Wiring diagram 1 6 PRIMEA 2007 Chapter 04 Primea Touch Plus ...
Page 17: ...REV 00 Mar 07 Primea Touch 2 6 PRIMEA Chapter 04 ...
Page 18: ...REV 00 Mar 07 Primea Ring 3 6 PRIMEA Chapter 04 ...
Page 22: ...REV 00 Mar 07 CHAPTER 5 TROUBLESHOOTING REV 00 PRIMEA 2007 Chapter 05 ...
Page 43: ...REV 00 Mar 07 CHAPTER 6 OPERATING LOGIC REV 00 PRIMEA Chapter 05 ...
Page 53: ...REV 00 Mar 07 CHAPTER 7 COMPONENT ASSEMBLY AND DISASSEMBLY REV 00 PRIMEA 2007 Chapter 07 ...
Page 76: ...REV 00 Mar 07 CHAPTER 8 SERVICE SCHEDULE REV 00 PRIMEA 2007 Chapter 08 ...
Page 78: ...REV 00 Mar 07 CHAPTER 9 AMENDMENTS MADE TO TECHNICAL SERVICE MANUAL PRIMEA Chapter 09 REV 00 ...
