HACH LANGE TitraLab KF1121, Basic User Manual, Page: 19 / 432

Calibration
Calibrate the titrant
1. From the main menu, select Calibration . Related information shows on the display.
2. If necessary, select an icon for more information or to change some data.
3. Do the instructions that show on the display, then push Start to start the calibration. Calibration
data shows on the display.
4. If the default stirring speed needs to be adjusted, push the up and down arrow keys to increase or
decrease the speed.
5. When the calibration is complete, push the arrow keys to see the different measurement views.
6. Push Continue to continue with the calibration.
7. When the calibration is complete, push Yes to accept the calibration or No to reject.
8. Push Exit to go back to the main menu.
Purge
Use this procedure to remove air bubbles from the system. Refer to Prepare the instrument for
measurement on page 16 for instructions.
Maintenance
C A U T I O N
Multiple hazards. Only qualified personnel must conduct the tasks described in this section of the
document.
N O T I C E
Do not disassemble the instrument for maintenance. If the internal components must be cleaned or repaired,
contact the manufacturer.
Clean the instrument
N O T I C E
Never use flammable or corrosive solvents to clean any part of the instrument. Use of these solvents can degrade
the environmental protection of the instrument and may void the warranty.
Clean the exterior surface with a moist cloth or with a mixture of water and mild detergent. Dry with a
soft cloth.
Clean the sensor
Refer to the documentation delivered with the sensor.
Regenerate the molecular sieve
It is recommended to regenerate the molecular sieve weekly, but this will vary depending on the
humidity of the laboratory. A humidity indicator, such as color changing silica gel crystal, can be used
to show when regeneration is necessary.
To regenerate the molecular sieve, dry it in an oven at a temperature of 300 °C (572 °F) for at least
4 hours. When cool, it can be kept in a glass bottle with an airtight seal.
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