norbar TWC 400 AUTO Operator's Manual

Contents

norbar TWC 400 AUTO Operator's Manual Manual pdf 69 page image

67MAINTENANCEWARNING: ENSURE THE TOOL IS DISCONNECTED FROM MAINS SUPPLY BEFOREANY MAINTENANCE.For optimum performance and safety, regular tool maintenance is required.User maintenance is described in and should be carried out in accordance with this section.Any other maintenance or repairs should be carried out by Norbar or a Norbar approved distributor.Maintenance intervals will depend on the TWC usage and the environment in which it is being used.The maximum recommended maintenance and recalibration interval is 12 months.Daily ChecksIt is recommended that the overall condition of the TWC is checked before use:• Check power cord for damage – replace if faulty.• Ensure PAT test is within date.• Test the external Residual Current Device (RCD) in the mains supply (if fitted).• Ensure TWC is clean - DO NOT use abrasives or solvent based cleaners.• Ensure fan and ventilation slots are clean and dust free. If cleaned with compressed air please wear eyeprotection.• Free run TWC to both home positions to ensure operation is smooth and quiet.• Ensure transducer is within recalibration.Torque CalibrationYour TWC has been supplied with a certificate of calibration. To maintain the specified accuracy it isrecommended that the TWC is recalibrated at least once per year.Recalibration should be carried out at Norbar or by a Norbar approved distributor, where all the facilities areavailable to ensure that the instrument is functioning at maximum accuracy.Temperature & Humidity AccuracyThe TWC is supplied with a sensor for measuring temperature & humidity. It is recommended to check theaccuracy of the sensor at least once per year. Accuracy testing should be completed by a testing facility withthe relevant equipment. A faulty sensor should be exchanged for a new unit.