| 摘要 |
The electronic control unit which can be applied to vacuum packaging machines consists in the incorporation, in the electronic control unit and specifically in its control panel or keyboard, of a viewer 4 displaying the hours of operation of the vacuum pump, over 2 seconds and expressed in the form of hundreds of hours, having a means of adjustment and memorization of the values of the programmes according to the position of the cover and a monitoring of the gas-entry function by means of an independent keyboard 17 provided with an LED 18. <IMAGE>
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