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7 Maintenance, cleaning and servicing 7 Maintenance, cleaning and servicing 7.1 Maintenance The Multichannel Calibrator model Pascal ET or Pascal ET/IS is maintenance-free. Repairs must only be carried out by the manufacturer. 7.2 GB Cleaning CAUTION! ■ Before cleaning, correctly disconnect the Multichannel Calibrator model Pascal ET or Pascal ET/IS from the pressure supply, and switch it off. ■ Clean the Multichannel Calibrator model Pascal ET or Pascal ET/IS with a moist cloth. ■ Electrical connections must not come into contact with moisture. For information on returning the instrument see chapter “8.2 Return” 7.3 Recalibration DKD certificate - Certificates: We recommend that the instrument is regularly recalibrated by the manufacturer, with time intervals of approx. 12 months. Every factory recalibration includes, additionally, an extensive freeof-charge check of all system parameters with respect to their compliance with the specification. The basic settings will be corrected if necessary. WIKA Operating Instruction, Model Pascal ET and Pascal ET/IS 81
