DA 4 Qube

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This is how the DA 4 Qube reduces drying periods and energy costs

Low energy costs and faster drying of all insulation layers with the DA 4 Qube

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.

Using the optional VX connection plate for intermediate hose connections, the DA 4 Qube can also be used separately in combination with insulation dryers from your stock.
DA4 Qube with VX connection plate

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

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

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+ [1] and afterwards the room air humidity sensor is positioned in the room or left in the sensor holder as needed [2].

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 2

In the second cycle of the first interval, the measured humidity values are separately captured for each individual channel and then transferred to the DA 4’s control logic.

1. Efidry interval, cycle of operation 3

1. Efidry interval, cycle of operation 3

Based on the determined humidity values the automatic control system of the DA 4 Qube now in the third cycle of operation directs the main suction capacity of the insulation drying installation for a calculated timeframe on the drying zone with the highest humidity value.

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

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.

DA 4 Qube

The DA 4 Qube turns the “drying venture into a reliably calculable fixed time project

The use of the sensor-supported drying control unit DA 4 Qube not only allows to reduce drying periods and energy costs by 30 to 70 % (depending on the kind of damage), to drastically reduce the warmth and noise nuisance for the aggrieved person and to make rooms usable again much more quickly – the DA 4 Qube also enables “standardized continual drying” with a predictable finish time.

This way the rate of expensive “on spec” empty running can be reduced to virtually zero and the “drying venture” becomes a reliably calculable fixed time project!

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