24
PUMP TUBE INSTALLATION
To mount the new peristaltic pump tube follow next steps:
• Position one peristaltic pump fixing ring on its location.
• Stretch the tube over the peristaltic pump cylinders.
• Fix the second pump fixing ring on its location.
• Attach the tube to the reagent bottle and to the dosing
tip.
Note
: Purge the peristaltic pump until drops of reagent appears on the dosing tip by pressing the
Purge
key from the titrator main screen.
To remove the tube of the peristaltic pump follow next steps:
Caution
: Purge line with water to remove NaOH from tube.
• Detach the old tube system from the reagent bottle and from the dosing tip.
• Grasp one fixing ring of the peristaltic pump tube.
• Pull the tube until the fixing rings are taken out from their location.
• Remove the other side of the tube.
PURGE
Purging should be performed whenever the tube of the peristaltic pump is replaced or before
starting a pump calibration or a titration.
In order to start purging press the
Purge
key from the titrator main screen. The purging stops
automatically after 5 minutes.
To access the
Purge
key follow the next steps.
• From the instrument main screen (pH meter screen) press
Titrator
function key.
The instrument will display the next screen if any of the following conditions exist:
- the meter hasn’t been calibrated in 8.30 pH buffer
- the pH calibration has expired
- a pump calibration hasn’t been performed or more than 3 days have passed since the last
pump calibration
