Operation Manual

2
Hot Water & Steam Delivery Systems
NOTE: The diagram on this page is not to scale and is designed for general educational purposes
only to illustrate function in a simple-to-understand manner. It does not depict the exact design
features of the espresso machine. It is not be used for technical support nor repair purposes. It is
a diagrammatic illustration to help you gain a better understanding of the basic operation of the
major internal components of this system.
We believe that understanding the basic operation of how the DD works will help you make better espres-
so as well as help you to diagnose any difficulties which may arise, either in the quality of the beverage or
the operation of the machine. To that end, the next three chapters are designed to illustrate how the machine’s
major systems operate. We begin with how water is moved through the various areas of the machine.
Water and steam are delivered through a sophisticated series of pipes and tubes, controlled by mechanical
and electronic systems that make control and operation of the DD a simple matter for you while providing
precise control of temperature and pressure, all to help you make excellent espresso. Follow along to learn
how water gets from the reservoir or the plumbed line and through the machine.
The numbers in the illustration refer to the red numbers in the text below to make it easier to follow along.
(Red arrows in diagram show direction of water flow):
1 The user can choose to supply the machine from the reservoir, or..
2 ..supply the machine using an external water source. Using an external source is referred to as “plumbed
in,” or simply, plumbed. (Ex. “My machine is plumbed so I do not have to use the reservoir.”)
3 The gray lever on the bottom of the machine operates a valve to select which of the two above-mentioned
water sources will supply the machine. Only one will be in use at any given time.
1
2
3
4
5
6
7
8
9
10
11
12
Brew
Boiler
Steam Boiler
Motor
Pump
E-61
Group
13
Reservoir