6. Service and Maintenance26
6. Service and Maintenance
6.1 Checking electrolyte gel
Check the electrolyte gel in the storage cap regularly for con-
tamination and ensure it is filled to the correct level. Replace
storage cap if necessary.
6.2 Cleaning housing
Clean housing with a damp cloth (soap water) if dirty. Do not
use abrasive cleaning agents or solutions!
6.3 Cleaning probe
Destruction of probe due to incorrect cleaning!
Danger of injury due to glass parts remaining in the
measurement medium.
Use only the cleaning substances stated.
Depending on the type of contamination, the following cleaning
substances are suitable:
- Fat: domestic dishwashing liquid
- Protein: pepsin
The use of warm water improves the cleaning effect.
1. Apply dishwashing liquid or pepsin to a cloth and gently wipe
(do not rub, as this leads to static charging).
2. Rinse the probe with clear warm water.
3. To stabilize the probe, place in the storage solution for at least
1 hour (better 12 hours)..
4. Re-calibrate the probe (see 5.4 Calibrating instrument,
page 24).
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