ii Instruction 3015-4286Fault Codes......................................................................................................................................... 19Clearing the Stored PPM Log, Alarm & Fault Data ........................................................................... 20The P-CHK Function............................................................................................................................. 20Overview ............................................................................................................................................. 20Keypad Functions .............................................................................................................................. 20Screen Display.................................................................................................................................... 20The DIAGNOS Function ....................................................................................................................... 21Overview ............................................................................................................................................. 21Keypad Functions .............................................................................................................................. 21First Diagnostic Screen ..................................................................................................................... 21Second Diagnostic Screen.................................................................................................................. 21The Calibration Function...................................................................................................................... 22Overview ............................................................................................................................................. 22Calibration Procedure........................................................................................................................ 22Adjusting Calibration Factor ............................................................................................................ 22MAINTENANCE ......................................................................................................................................... 23Warnings & Cautions ................................................................................................................. 23Hydrophobic Filters............................................................................................................................... 23Servicing Air Lines & Termination Filters .......................................................................................... 23Clock Battery ......................................................................................................................................... 23Sample Pump ......................................................................................................................................... 23Replacement Parts & Optional Accessories ......................................................................................... 24Replacement Parts ............................................................................................................................. 24Item Description................................................................................................................................. 24Part Number....................................................................................................................................... 24Item Description................................................................................................................................. 24Part Number....................................................................................................................................... 24Surge Protectors:................................................................................................................................ 24Service Centers ...................................................................................................................................... 25Specifications ......................................................................................................................................... 26