BIOQUELL PROTEQ USER MANUAL -EN
TD092-O&M-001
REVISION 5 DRAFT
Page 9 of 58
3
VAPOUR BIO-DECONTAMINATION PROCESS
3.1
Process Sequence
The room bio-decontamination process consists of the following stages:
The ProteQ is designed to carry out the conditioning, gassing and dwell phases of
the bio-decontamination cycle. The aeration phase is performed by the lower
aeration part of the Base unit and optional aeration unit(s). Control and
monitoring of the process is performed outside the area using the lectern. The
Base unit, optional aeration units and lectern communicate with each other
wirelessly.
3.1.1
Conditioning Phase
When the system starts conditioning, the air and vaporizer heaters warm-up and
control to their set points ready for the next stage of the cycle.
During conditioning both the vaporizer and distribution fans operate, ensuring
that the hydrogen peroxide outlets reach a stable operating temperature.
Immediately after conditioning, the dosing pump is primed with hydrogen
peroxide liquid.
3.1.2
Gassing Phase
Liquid from a bottle is pumped onto the vaporizer heaters. Air then passes around
the heaters where it picks up the H
2
O
2
vapour for distribution.
The air circulation system has been designed to distribute the hot vapour evenly
throughout the room being bio-decontaminated. This system consists of fans,
which draw air from the top of the unit and blow it out of the four vents at high
velocity. An additional, internal flow path, from the distribution head down to the
base of the unit, ensures the inside of the unit is also bio-decontaminated.
There are two types of cycle parameters that can be programmed by the
operator. The first is a parametric cycle where the amount
of
H
2
O
2
to be used is
automatically calculated from the room volume and by the unit’s internal
instrumentation and control algorithm. The alternative is a fixed pre-validated
timed cycle.
3.1.3
Dwell Phase
The dwell phase allows the vapour to evenly distribute within the room and for
the condensation contact time to be prolonged.
3.1.4
Aeration Phase
CONDITIONING
GASSING
DWELL
AERATION
