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5 Operation and maintenance
874 Oven Sample Processor
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5 Operation and maintenance
5.1 General notes
The 874 Oven Sample Processor requires appropriate care. Excess contam-
ination of the instrument may result in malfunctions and a reduction in the
service life of the sturdy mechanical and electronic components.
Severe contamination can also have an influence on the measured results.
Regular cleaning of exposed parts can prevent this to a large extent.
Spilled chemicals and solvents must be removed immediately. In particular,
the power plug should be protected from contamination.
5.2 Care
￭ Replace exhausted molecular sieve promptly. You should replace the
molecular sieve as soon as increased drift values appear in the Karl
Fischer cell.
￭ Check all tubing connections regularly for leaks.
￭ Rinse the tubing connections from time to time. Carefully dry the tub-
ing afterward. The tubing must be replaced after prolonged usage.
￭ Clean the sample holder regularly with a damp cloth.
￭ Replace the dust filter once a year.
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