Mocom B CLASSIC - 2 Nd VACUUM PHASE

7
EN
TECHNICAL MANUAL - B CLASSIC / B FUTURA / S CLASSIC
FUNCTIONING
1.5 2nd VACUUM PHASE
During this phase of the cycle, the pressure in the chamber, which had reached 1.00 bar during the 1
st
PRESSURE
RISE is lowered by releasing steam through solenoid valve EV1 and the condensate fraction through solenoid valve
EV3, which is connected to the chamber lter.
Upon reaching 0.10 bar, solenoid valve EV4 is activated and has the vacuum pump – which had been activated at the
beginning of the 2
nd
VACUUM PHASE – lower pressure further to approach – 0.80 bar.
No steam shots occur during this phase.
2
nd
VACUUM PHASE - 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 ON OFF ON ON
Pressure
drops
from 0.10
to -0.80
bar
On
closed
Off
closed
On
open
On (1)
Off
closed
ON ON OFF ON ON