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world pulppaper 71 These three measures succeeded in reducing the air consumption of the stabilisers and increasing the air available for pocket ventilation The setting of many stabilisers in both slalom and conventional dryer groups was incorrect which was the main cause of edge lifting. Small meaSureS wiTh a large effecT This initial state Figure 1 led to the following preliminary steps Optimisation of the sheet stabilisers for stabilisation rather than for ventilation eliminates sheet edge lifting. Upgrade of the sheet stabilisers leads to same vacuum with less air and consequently to reduced fan speed and direct energy saving Modification to the channel system by closing off two fresh air channels In this way stabilisers work with 100 recirculated air instead of a mixture of fresh and recirculated air see implementation state 2. The fresh air saved is used for pocket ventilation which significantly increases the water absorption capacity Figure 3 and 4. These three measures implemented during planned downtime succeeded in reducing the air consumption of the stabilisers and increasing the air available for pocket ventilation. The customer is saving around 50 000 per year by the reduction in the speed of the fan alone said Thomas Fischer. Greater sales profits through increased production speed are not included in this figure. The early involvement of TASK not only serves to prevent many disturbances in advance rather the ideas that our experts bring can often lead to real cost savings. figure 3. figure 2.