USER MANUAL
TD069-O&M-001
REVISION 6
Page 22 of 80
2.7 Modes of Operation
The Bioquell QUBE can be used in two modes of operation. Refer to Section 4.3
for information on how to operate the QUBE.
2.7.1Processing Mode
In processing mode the QUBE provides a unidirectional airflow working zone that
meets the classification requirements of ISO 14644-1 Class 5 (equivalent to EU
cGMP Grade A and US FED STD 209E Class 100). Air handling may be via a
recirculation or ducted system (dependent upon Client requirements).
The QHPV & QEXT modules include integrated air handling to stabilize the
chamber thermal conditions and to allow for pressure control. The chamber
pressure can be controlled from -60Pa to +75Pa.
2.7.2Bio-decontamination Mode
The QHPV, when used in this mode and in conjunction with appropriate validation
as necessary, provides assurance of bio-decontamination to a 6-log microbial
reduction of the load.
Either the QHPV module or a complete QUBE system may be decontaminated.
The HPV Cycle is a four stage process:
• ‘Conditioning’ when the Hydrogen Peroxide vaporiser increases to operating
temperature, and the instruments warm-up and stabilise.
• ‘Gassing’ when the Hydrogen Peroxide liquid is vaporised and is distributed
around the chamber(s), dew point is reached and micro condensation forms on
surfaces.
• ‘Dwell’ when the Hydrogen Peroxide Vapour is either maintained at a constant
level or the vapour is distributed without additional vapour addition.
• ‘Aeration’ when the Hydrogen Peroxide Vapour is catalytically converted to
water vapour and oxygen.
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