Description of the 3 stages of the process
Decompression
3. Decompression
Purpose: Restore pressure in the tank to the value of the atmospheric pressure to allow unlocking and opening the lid safely.
Step
Note Safety
A
Decompression
Stop heating
Opening of the pressure relief valve (G: Y4
/ R: Y5
Control box solenoid valve Y2 is active as
long as P > 4mbar
B
Unlocking safety device
Waiting for authorisation to release. No
release button displayed!
Minimum waiting time set to 3
min.
Display of the button only if:
P < 25 mbar 3 minutes, (L: P1 / R: P2)
OR,
T°C < T boiling (L: B12 + B1 / R: B13 + B2)
AND P < 20 mbar (L: P1 / R: P2)
C
Hardware unlocking safety device Cut power to unlocking motor
Release of the power supply actuator if P > 20 mbar
L: F12 / R: F13
D
End of the pressure mode
The pressure mode ends once the lid is
unlocked
L: S6 = 1
R: S18 = 1
* Different values depending on the model.
**Valuesarenotspeciedforthesakeofcondentiality.
XI.13
v03 • July-2016 • Hen
Pressure Module
Line Units Serial number (starting from) Sw Revision
VCCM
VCCWE
112P, 211P, 311P ExxPH1009xxxxxxx 01-01-00
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