Hach EC1000 Instruction Manual page 7

TABLE OF CONTENTS,
SECTION 8 ELECTRODE AND PUMP MAINTENANCE ............................................................................... 81
8.1 Electrode Maintenance ........................................................................................................................................... 81
8.1.1 General Electrode Maintenance .................................................................................................................. 81
8.1.2 Removing Existing Electrode ..................................................................................................................... 81
8.1.3 Sensor Replacement ................................................................................................................................... 81
8.1.4 Replacing Electrolyte ................................................................................................................................. 82
8.1.5 Crystal Formation in Reference Tube ........................................................................................................ 84
8.1.6 Purging the System ..................................................................................................................................... 84
8.1.7 Storage and Conditioning ........................................................................................................................... 84
8.1.7.1 pH Electrode Storage and Conditioning ...................................................................................... 84
8.1.7.2 ORP Electrode Storage and Conditioning .................................................................................... 84
8.1.7.3 Industrial pH Electrode Shelf Life and Storage ........................................................................... 86
8.1.8 pH Electrode Cleaning ................................................................................................................................ 86
8.1.9 ORP Electrode Cleaning ............................................................................................................................. 87
8.1.10 Industrial pH Electrode Cleaning ............................................................................................................... 87
8.2 Pump Maintenance ................................................................................................................................................. 87
8.2.1 Changing Pump Tubing .............................................................................................................................. 87
8.3 Fuse Replacement ................................................................................................................................................... 88
8.3.1 Meter Fuse Replacement ............................................................................................................................ 88
8.3.2 Pump Fuse Replacement ............................................................................................................................ 90
8.4 Pump Motor Replacement ...................................................................................................................................... 90
SECTION 9 TROUBLESHOOTING ..................................................................................................................... 91
9.1 Troubleshooting the EC1000 Controller ................................................................................................................ 91
9.1.1 Test Diagnostic Menu ................................................................................................................................. 91
9.1.2 Error Codes ................................................................................................................................................. 94
9.1.3 System Warnings ........................................................................................................................................ 95
9.2 Troubleshooting the pH Electrode ......................................................................................................................... 96
9.3 Troubleshooting the ORP Electrode
SECTION 10 SCHEMATICS ................................................................................................................................. 103
GENERAL INFORMATION
REPLACEMENT PARTS ......................................................................................................................................... 109
HOW TO ORDER ...................................................................................................................................................... 113
REPAIR SERVICE .................................................................................................................................................... 114
APPENDIX A Process pH Electrode Without Internal Preamp ........................................................................... 115
APPENDIX B Supplemental Compliance Information ......................................................................................... 117
INDEX ......................................................................................................................................................................... 119
continued
............................................................................................................... 98
............................................................................................................................... 107
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