Advanced operation, Maintenance, Troubleshooting – Hach-Lange 2100 N Laboratory Turbidimeter User Manual User Manual
Page 5: Replacement parts and accessories

Prepare formazin standards .....................................................................................................................................................32
Calibration notes .......................................................................................................................................................................32
Formazin calibration procedure ................................................................................................................................................33
Making 4000-NTU formazin stock solution ...............................................................................................................................35
Clean the instrument ........................................................................................................................................................................36
Change the filter assembly ..............................................................................................................................................................36
Clean the filter assembly ..................................................................................................................................................................36
Replace the lamp .............................................................................................................................................................................36
Replace a fuse .................................................................................................................................................................................38
Error codes .....................................................................................................................................................................................38
Diagnostic codes ..............................................................................................................................................................................39
Delete calibration data .....................................................................................................................................................................39
Flashing 9s .......................................................................................................................................................................................40
Flashing 0s .......................................................................................................................................................................................40
Replacement parts and accessories
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