Rancilio EGRO 55 Series Technical Manual page 58

4.2 HIGH VOLTAGE COMPONENTS - CONTINUED
1 OPERATING MODES
HEATING ELEMENT:
HOT WATER BOILER
The hot water boiler or coffee boiler
contains a 208V 3000w external
heating element.
Electrical device such that current
fl owing through it in one circuit (24v
from the mainboard) can switch on
and off a current in a second circuit
(208v going to the heating elements
and the pump).
© Copyright 2008. Rancilio North America
RELAYS
The steam boiler contains a 208V
3000w internal heating element.
Receives the incoming lines of power
from the plug.
- Black wires lead to the relay
- Red wires lead to the bottom relay
- Blue wires lead to the mainboard
for all 230v/208v components
- Section 4: Page 3 -
EGRO 55 SERIES TECHNICAL MANUAL
EGRO 55 SERIES TECHNICAL MANUAL
HEATING ELEMENT:
STEAM BOILER
TERMINAL BLOCK
E55_TM_S4_electricalV3