BUCHI KjelDigester K-449 - Manual (Page 39)

6 – 39 Operation Manual KjelDigester K-446/K-449
6 Operation
6.7 KjelDigester K-446
6.7.1 Digestion process
a Preliminary tasks
1. Turn on the main switch.
2. Set the desired temperature and time.
∙6.3 Set parameters for manual digestion, (6–36)
3. Press the start [START] button.
∙The preheating of the heating block starts.
∙When the set temperature is reached ready [READY] appears on the display.
b Tasks
1. Place the sample tubes into the rack.
2. Pour the samples and reagents into the sample tubes.
3. Use glass caps for any unoccupied positions to close the suction circuit.
4. Fit the sample rack into the cooling position.
5. Remove the drip tray.
6. Tilt down the suction module onto the sample tubes.
7. Check if all the sealings of the suction module are fitting the sample tubes.
8. Place the rack and suction module into the heating position.
WARNING
Risk of acid or toxic fume inhalation.
Serious injuries or death can result.
1. Always run the Scrubber or water jet pump during the digestion process.
2. Operate the Scrubber and KjelDigester only in a fume hood.
3. Close the fume hood door as far as possible.
9. Press the start [START] button on the control panel.
∙The Scrubber starts (if connected).
10. Start the Scrubber (if not connected) or the water jet pump.