Table of contents
7
K-375 / K-376 / K-377
Operation Manual, Version E
6.2.3 System status icons
63
6.3
User concept
63
6.4
Editable and non-editable menu items
63
6.5
The status view
65
6.5.1 RESULT display
66
6.5.2 CHART display
67
6.6 Determination
67
6.6.1 System Preparation
69
Single Sample
77
6.6.3 Sample Lists
79
6.6.4 Sequences
84
6.7 Results
92
6.7.1 Result groups
92
6.7.2 Last Results
94
6.7.3 Blank Correction
95
6.8
Determination Parameters
99
6.8.1 Methods
99
6.8.2 Volumetric Solutions
108
6.8.3 Reference Substances
109
6 9
Device
110
6 9 1
Settings 110
6.
9
.2 Utilities
117
6 9 3
Diagnostics 118
6.9.4 Logout
119
7 Maintenance 119
7.1
Daily maintenance
120
7.1.1 Before sample determination (potentiometry)
120
7.1.2 Before sample determination (colorimetry)
121
7.1.3 After sample determination
122
7.1.4 pH electrode
122
7.1.5 Filling boric acid into receiving vessel after last sample of rack was determined
(potentiometry only)
123
7.1.6 Sample tube cleaning
124
7.2
Weekly maintenance
125
7.2.1 Cleaning the housing
125
7.2.2 Cleaning the titrator
125
7.2.3 Cleaning the glass parts of the dosing unit
125
7.2.4 Cleaning the dip tube of the KjelSampler
125
7.2.5 Device monitoring
126
7.2.6 Cleaning colorimetric sensor and mesh
127
7.3
Monthly maintenance
127
7.3.1 Calibrating the pump
127
7.3.2 Checking the distillate amount
129
7.3.3 Inspecting the buret
130
7.3.4 Inspecting the titrator
130
