8. MAINTENANCE ......................................................................................................... 37
8.1. SCHEDULE OF MAINTENANCE ................................................................................... 37
8.2. MAINTENANCE PROCEDURE ..................................................................................... 38
8.2.1. Cleaning the tapered connection thread, flushing the inside of the level gauge.
Cleaning the face panel and housing ......................................................................... 38
8.2.2. Maintenance of the manual valve .................................................................... 39
8.2.3. Flushing and lubricating the interface connector ............................................ 40
8.2.4. Operation monitoring ...................................................................................... 40
8.2.5. Pressure testing ................................................................................................ 41
8.2.6. Replacement of the manual valve sealing ring ................................................ 41
9. STORING AND TRANSPORTATION OF THE TOOL ..................................... 42
SUPPLEMENTS .............................................................................................................. 42
SUPPLEMENT 1.LEVEL MONITORING UNDER COMPLICATED CONDITIONS ......................... 42
SUPPLEMENT 1.1. RECOMMENDATIONS ON MEASUREMENTS UNDER COMPLICATED
CONDITIONS .................................................................................................................... 42
SUPPLEMENT 2. SETTING OF A USER SOUND SPEED CORRECTION TABLE ......................... 44
SUPPLEMENT 3. DEPENDENCE OF SOUND SPEED ON ANNULAR PRESSURE (TABLES FOR
GENERAL USE)................................................................................................................. 46
SUPPLEMENT 4. CHARGING THE BATTERY ....................................................................... 47
SUPPLEMENT 5. TRANSFERRING DATA TO A COMPUTER .................................................. 48
SUPPLEMENT 7. THE ECHOGRAM VISUALIZATION IN THE GRAPHIC DISPLAY .................... 55
SUPPLEMENT 8. SETTING THE TIME AND DATE. INITIALING THE STORAGE ....................... 56
SUPPLEMENT 9. SETTING THE OPERATOR AND WORKSHOP NUMBER AND RESETTING THE
SECONDS. ........................................................................................................................ 58
SUPPLEMENT 10. SETTING THE PRESSURE SENSOR AT ZERO ............................................ 59
SUPPLEMENT 11. TESTING THE LEVEL GAUGE ................................................................. 59
SUPPLEMENT 11.1. RESTARTING THE LEVEL GAUGE ....................................................... 60
SUPPLEMENT 11.2. RECORDED ECHOGRAM TEST ............................................................ 60
SUPPLEMENT 12. MALFUNCTIONS DETECTED BY TESTING THE LEVEL GAUGE ................. 60
SUPPLEMENT 13. LIST OF POSSIBLE MALFUNCTIONS AND METHODS OF RECTIFICATION .. 62