Hach TU5 Series, User Instructions, Page: 13 / 138

4.1 Set the automatic cleaning options
After the automatic cleaning module is installed, set the cleaning options.
1. Push menu .
2. Select SENSOR SETUP>[select analyzer]>CONFIGURE>CLEANING MODULE.
3. Select ON.
The menu options for the automatic cleaning module are shown on the display.
4. Select SENSOR SETUP>[select analyzer]>CONFIGURE>CLEANING.
5. Select an option.
Option Description
CLEAN. INTERVAL Sets the cleaning interval. Options: 2, 6 or 12 hours (default) or 1 or 7 days. The
frequency of the cleaning interval selected depends on the sample composition.
Note: To manually start a cleaning cycle, select SENSOR SETUP>[select
analyzer]>START WIPE.
WIPER REMINDER When set to on, the reminder for wiper replacement shows on the display when it is
time to replace the wiper (default: OFF).
CLEAN. LEVEL When set to on, a cleaning cycle is done when the reading is more than the
THRESHOLD setting (default: OFF).
When set to off, a cleaning cycle is done at the time frequency of the cleaning interval.
THRESHOLD Sets the threshold for a cleaning cycle. Options: 0 to 1000 NTU (or FNU).
Note: This menu option only shows when the CLEAN. LEVEL setting is set to on.
Use caution when the threshold is set. High turbidity levels may be the result of critical
process issues where immediate attention is necessary.
OUTPUT DELAY Sets the time for the hold condition of the output after the cleaning cycle. Options: 0 to
120 seconds (default: 30 seconds).
SOFT VERSION Shows the software version of the cleaning module
4.2 Show maintenance information of the cleaning module
1. Push menu .
2. Select SENSOR SETUP>[select analyzer]>DIAG/TEST>COUNTERS.
3. Select an option.
Option Description
WIPER REPLACE Shows the remaining number of wiper cycles before a wiper replacement is necessary.
VIAL TIME Shows the date of the last vial installation or replacement.
Section 5 Maintenance
W A R N I N G
Burn hazard. Obey safe handling protocols during contact with hot liquids.
C A U T I O N
Multiple hazards. Only qualified personnel must conduct the tasks described in this section of the
document.
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