Operating Instructions - Snap-on Equipment

PC Maintenance5. Attach the calibration bottle to the calibration port and open the calibrationbottle valve.6. Verify that the bottle pressure gauge reads at least 30 psi (207 kPa).7. Select Continue to perform the gas calibration.8. Turn the Gas Calibration bottle off and disconnect when the calibration iscomplete.Figure 3G-4: Gas Calibration Complete Screen9. When the gas calibration has successfully completed, select Exit tocontinue using FGA.If the gas calibration fails,1. Verify that the gauge(s) read at least 50 psi.2. Verify that the gas bottle is properly attached.3. Re-run the calibration.4. Verify that the proper gas values were entered.Leak CheckPerforming a leak check on the sample system helps to ensure that no vacuumleaks or hardware leaks exist to cause inaccurate readings. Leak check intervalsmay vary depending on the application and use, but once per week as part ofroutine maintenance is recommended, more frequently with heavy use.To perform a Leak Check,1. Press the Calibration button and choose Leak Check from the menu.— The Leak Check window opens.Figure 3G-5: Leak Check initial Screen3G-3