Parker MAXIGAS MX104 User Manual

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Parker MAXIGAS MX104 User Manual Manual pdf 17 page image

Operating the GeneratorEN174.7 Oxygen Analyser CalibrationThe O 2 analyser should be calibrated at least once every three months againsta calibrated gas supply or a calibrated independent analyser.Note. If using calibration gas, ensure that purity is as close to the productiongas purity as possible (minimum of 50ppm). Do not exceed 7barg pressure.For low purity applications the calibration may be performed using compressedair. This method is not recommended when the purity of the gas is critical.Calibrated Gas SupplyConnect the gas supply to the O 2 Analyser calibration port (1) on the side of thegenerator.Locate the calibration ball valve (2) inside of the shroud and rotate the handleclockwise so that it is pointing upwards as shown. Wait approximately fifteenminutes for the O 2 reading to stabilise. Once stable enter the calibrated levelas specified below.Calibrated Independent AnalyserConnect the analyser to the nitrogen outlet port of the generator. Waitapproximately fifteen minutes for the O 2 reading to stabilise. Once stable enterthe calibrated level as specified below.Compressed AirConnect the O 2 sample line between the elbow push in fitting, located on theball valve (3), and the O 2 Analyser calibration port (1).Open the ball valve (3) and rotate the handle of the calibration ball valve (2) so that it is pointing upwards as shown. Wait approximately fifteenminutes for the O 2 reading to stabilise. Once stable enter the calibrated level as specified below.4.7.1 Entering the calibrated levelSelect menu 3.2. The current reading from the 0 2 analyser will be displayed on the controller.Using the and keys enter one of the following as appropriate:• the purity of the calibration gas,• the purity reading from the independent analyser,• Oxygen content of the compressed air (20.9%).Press to send the calibration level to the O 2 analyser.On successful completion of the calibration the new O 2 reading will be shown on the bottom line of thedisplay. If the calibration is not successful the original reading from the analyser will be loaded. Should thisoccur repeat the above steps.On completion of the calibration, return the calibration ball valve back to its original position and removethe regulated calibration gas supply or independent analyser as applicable.Disable the O 2 Alarm Over-ride.When returning to the main operating menu, “CAL” will be shown on the top line of the display. This willremain for a period of twenty minutes after the calibration. Throughout this time period the O2 alarm isoverridden, to allow the sensor to return to the required level.If a sample line other than the one provided by domnick hunteris used ensure that it is suitable rated for the working pressureof the generator.The sample line will need to be depressurised prior to disconnection. Close the ball valve (3) and wait until the pressureshown on the pressure gauge (4) reaches zero. When the line is fully depressurised, rotate the handle of the calibrationball valve (2) so that it is pointing downwards and disconnect the line from the generator.43.1 O2 AlarmOver-ride = 1Select menu 3.1 and enable the O2 AlarmOver-ride.3.2 O2 Calibration= 4.95%3.2 O2 Calibration= 5.00%3.2 O2 CalibrationPlease Wait...3.2 O2 Calibration= 5.00%3.1 O2 AlarmOver-ride = 1O2 = 5.00 % CALRunning