Systec DB-45 - Vacuum Unit (Optional); Position and Function

V/D S ERIES
M ECHANICAL ASSEMBLIES
3-74 Revision: 2.1
3.11 Vacuum unit (optional)
Fig. 41: Position of the vacuum unit
3.11.1 Position and function
A pre-vacuum is created before the heating phase starts, which evacuates
air from the items to be sterilised. This ensures that steam completely
penetrates any cavities, and prevents the formation of air pockets. A triple
pre-vacuum is set as standard.
Once the atmospheric conditions have been reached after the sterilisation
phase is complete, a post-vacuum is generated to dry the sterilised items.
The build-up of odours during the sterilisation of waste is also minimised.
Sample parameterisation:
Code for access level 3, parameter 4 (“Pulses”):
− No pre-vacuum = 0
− Triple pre-vacuum = 3
M2 Vacuum pump
R13 No-return valve for cavitation protection
N7 Needle valve for cavitation protection
Y7 Drain valve
Y8 Vacuum pilot valve
Y15 Pump water valve for vacuum pump
PY8 Vacuum valve