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behrotest
®
K8 / K12 / K20 / K16 / K24 / K40
0591
11
Maintenance of your
K8 / K12 / K20 / K16 / K24 / K40
Danger of electric shock!
Always ensure that no liquids can come
into contact with cable connections or the
interior of the unit.
Never attempt to open the unit! Repairs
to electrical equipment may be performed
only by specialist electricians.
Checking the Temperature
All behr Kjeldahl heating blocks have a boring (2 mm ø)
in the center of the aluminium block. You can insert the
temperature sensor of an electronic thermometer there
to check the temperatur. Check if the temperature mea-
sured corresponds to the temperature display of the
heating block.
Remove the temperature sensor again before starting a
digestion.
Cleaning the Exhaust Collector
Danger of injury in case of breakage of
glass! Always adhere to your professional
association's regulations when handling
glass elements!
Caution: there may be sulphuric acid in
the exhaust collector! It might burn you.
Adhere to the current Hazardous Sub‑
stances Ordinance!
If, during a digestion, the exhaust collector has been
contaminated by sample components, you can easily
clean it.
Cautiously lay the exhaust collector upside down,
with the nozzles pointing upwards.
Rinse the nozzles with distilled water.
If need be, gently apply a small bottle brush or a pipe-
cleaner to clean the nozzles.
If necessary, you can dismantle the PTFE sealings from
the nozzles for cleaning.
Grasp the sealing at the sides, and at the same time
cautiously press against the nozzle with your thumbs.
Gently wiggling withdraw the sealing from the nozzle.
After cleaning the sealings, put them on the nozzles
again by reversing this procedure.