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NANTENANCE CHECKLIST* <br /> ENVIRQRANGER 1200 <br /> I . COMPONENT SERVICE <br /> A. Visually inspect all electronic and sevicable <br /> components in the unit . <br /> B . Perform a calibration check on the vapor sensor . <br /> C . Perform a voltage check on all printed circuit <br /> boards . <br /> D . Record pressure settings and vapor levels of all <br /> monitor wells . <br /> E . Check air filters on clean air ports . <br /> II . MONITORING LINE AND WELL SERVICE <br /> A . Inspect all well boxes , clean and replace seals if <br /> necessar <br /> B . Visua I, inspect restrictor valves . <br /> C . Clear J1 vapor and vent lines with compressed air . <br /> III . ADMINISTRATIVE SERVICE <br /> A . Prepare a site and visit report for customer . <br /> IV. OTHER SERVICES <br /> A. Customer personnel trainin of two hours per annum. <br /> B . Preferred labor rate on al non covered service . <br /> C . A 10% discount off manufacture ' s price on all parts . <br /> D . An annual site report detailing all service of the <br /> system over the past year . <br /> ATI/REV-7,87A <br />