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This is how the DA 4 Qube reduces drying periods and energy costs
In case of conventional low-pressure drying with the suction load homogeneously distributed over all drying zones, the increased counter-pressure in drenched insulation layers entails that, proportionately, dry air flows too much through areas which have already dried a good deal and too little through sections which are still wet, which in turn leads to unnecessarily long drying periods.
By contrast, the drying control unit DA 4 Qube, designed specifically for low-pressure drying, with its specially developed, sensor-supported Efidry automatic control system fully automatically enables an active vacuum air load management between the different drying zones.
This automatic channelling of the suction capacity on the respectively most drenched area achieves a yet more homogeneous and clearly faster drying of all insulation layers – this way, depending on the type of damage, drying periods and energy costs can be reduced by 30 to 70 % or else surfaces larger by up to 30 % can be dried in the same time!
Consequently, the warmth and noise nuisance for the aggrieved person is also rigorously reduced and the rooms can shortly be utilized again as well.
The particularly compact drying control unit DA 4 Qube is tailored perfectly to the Qube and can be connected to the Qube in just a few steps, rendering an elaborate intermediate hose connection with water separator redundant.
Thanks to an optional VX connection plate, the DA 4 Qube can also be combined with insulation dryers from your stock such as the VX 5 MultiQube without difficulty.
Functional principle of the drying control unit DA 4 Qube
Schematic representation of a low-pressure insulation drying process without using a DA 4 Qube
For conventional low-pressure drying without drying control unit all vacuum channels are permanently opened. With this procedure the increased counter-pressure in drenched insulation layers entails that, proportionately, dry air flows too much through areas which have already dried a good deal and too little through sections which are still wet, which in turn leads to unnecessarily long drying periods.
Detailed description of the sequence of the sensor-supported drying cycles
Schematic representation of a low-pressure insulation drying process using a DA 4 Qube
The DA 4 Qube is simply connected to the Qube, then the process air humidity sensor is fitted to the Qube  and afterwards the room air humidity sensor is positioned in the room or left in the sensor holder as needed .
In the first cycle of operation, initially all vacuum channels are fully opened to check the installation and to determine reference measured values. This state corresponds to “normal” low-pressure drying without using the DA 4 Qube.
Thereafter, drying is accelerated as “active drying” based on dynamically controlled Efidry intervals, as shown in the following schematic drawings.
1. Efidry interval, cycle of operation 2
1. Efidry interval, cycle of operation 3
2. Efidry interval (and more)
For the second and every following interval the DA 4 Qube’s sensor control permanently calculates the drying zones’ current state of moisture penetration and consequently optimizes the vacuum channels’ cycle times. This way, the main suction capacity is fully automatically directed to the respectively dampest zone. This active sensor-supported vacuum air load management results in a homogeneous and clearly faster drying of all soaked areas.
Final Efidry interval
As soon as the Efidry sensor control detects an ideal homogeneous drying level for the monitored zones, it automatically terminates the cycles and switches all vacuum channels to 100 % air flow for residual drying. This final drying is effected with quality assurance: By means of balancing the humidity values of process and room air the DA 4 Qube in case of another increase of the humidity level in one drying zone automatically changes back into the “active drying” mode.