12
EN
B CLASSIC / B FUTURA / S CLASSIC - TECHNICAL MANUAL
FUNCTIONING
1.9 DISCHARGE
When the PROCESS phase is completed, the DISCHARGE phase begins. During this phase, all steam is discharged
from the chamber and a vacuum value of - 0.80 bar is reached.
Just like the previous PRESSURE DROPS TO VACUUM phases, the DISCHARGE phase begins with a natural de-
pressurization phase that uses the pressure generated by steam, during which only the drain solenoid valves EV1 and
EV3 are operated.
To achieve complete DISCHARGE, until achieving – 0.80 bar, the system keeps lowering pressure by means of the
vacuum pump and operating the solenoid valve EV4.
Again, the solenoid valve EV2 is activated to balance pressure inside the hydraulic circuit and aid the operation of the
vacuum pump.
DISCHARGE - components on state
STATE
EV1
Drain
High (NO)
EV2
Air inlet
(NC)
EV3
Drain Low
(NC)
EV4
Drain
bypass
(3V)
EV5
Air inlet to
chamber
(NC)
FAN
WATER
PUMP
VACUUM
PUMP
CHAMBER
BUNDLE HTR
GENERATOR
HTNG ELMT
Direct
steam
discharge
Off
open
Off
closed
Off
closed
Off (2)
Off
closed
ON OFF ON ON ON
Direct
condensate
discharge
On
closed
Off
closed
On
open
Off (2)
Off
closed
ON OFF ON ON ON
Pressure
drops
from 0.10
to -0.80
bar
On
closed
Off
closed
On
open
On (1)
Off
closed
ON OFF ON ON ON
After the DISCHARGE phase, the DRYING phase begins. This phase is an integral part of the sterilization cycle.
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