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EN
B CLASSIC / B FUTURA / S CLASSIC - TECHNICAL MANUAL
FUNCTIONING
1.11 VENTILATION
During this phase, pressure starts rising again gradually to achieve a balance with ambient pressure.
Pressure is raised by keeping suction in the chamber active through the vacuum pump, while air is admitted to the
chamber through the bacteriological lter/EV5; VENTILATION ends upon reaching a pressure of > -0.30 bar in the
chamber.
VENTILATION - 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
Pressure
rise
On
closed
Off
closed
On
open
On (1)
On
open
ON OFF ON ON ON
Next, the PRESSURE LEVELLING phase and nally the CYCLE END phase begin.
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