BUCHI KjelDigester K-449 - Manual (Page 58)

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8 Troubleshooting
KjelDigester K-446/K-449 Operation Manual
a Results
Sealings and springs show no damage:
∙The sealings and springs are O.K.
Sealings and springs are damaged or show wear:
∙Replace the sealings and springs (7–50).
8.4.2 Glass parts, check
1. Check all glass parts for scratches a or chips b:
∙Sample tubes
∙Suction tubes
∙Fume collection tube
∙Hose connector
NOTE
Sample tubes with scratches or chips can break during a digestion.
a Results
Glass parts show no damage:
∙The glass parts are O.K.
Glass parts have scratches or chips:
∙Replace faulty glass parts.
8.4.3 Rechargeable battery (K-449 only), check
NOTE
This check can be done before a regular digestion.
1. Prepare the sample tubes and the rack for a digestion.
2. Place the filled rack into cooling position.
3. Turn on the main switch.
4. Move the lift to the heating position by pressing the down button on the control
panel.
5. Disconnect the power supply cable from the device.