Mocom B CLASSIC - Drying

13
EN
TECHNICAL MANUAL - B CLASSIC / B FUTURA / S CLASSIC
FUNCTIONING
1.10 DRYING
This phase of the sterilization cycle eliminates any moisture left inside the chamber and fully dries the load.
Drying is achieved by maintaining a negative pressure level inside the chamber, so that condensate can evaporate
even at temperatures below 100°C.
The drying phase has a different duration for each sterilization cycle (e.g. 12’ for 134°C universal cycle). During the dry-
ing phase, a series of pressure pulses take place in the chamber, approximately between - 0.80 bar and - 0.40 bar, to
aid total removal of any residual steam; the number of pulses may vary depending on the moisture content in the load.
During the pressure rise phases that take place during these pulses, solenoid valve EV5 is activated to let air ow into
the chamber through the bacteriological lter; this air ow aids steam removal.
DRYING - 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
drop
On
closed
Off
closed
On
open
On (1)
Off
closed
ON OFF ON ON ON
Pressure
rise
On
closed
Off
closed
On
open
On (1)
On
open
ON OFF ON ON ON
When the standard drying time – plus any additional drying time set by user –have elapsed, the VENTILATION phase
begins.