Burkert Type MS01, Руководство по эксплуатации, Страница: 69 / 88

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Maintenance
17.5 Replace the reference electrode of the product
The reference electrode must be replaced in the following cases:
•
the error calibration limits for the offset value of the pH sensor are exceeded.
•
the error limit of the reference-electrode impedance-value is exceeded.
Procedure to replace the reference electrode:
1. Remove the product from the backplane of the system.
→ While the push-button is pushed, turn the bayonet lever to the right, on the unlocked position, . Do
not push the lever to the maintenance position.
→
Pull the product towards you and separate it from the backplane.
2. Remove the reference electrode from the product.
→ Lift the folding lever of the reference electrode and turn it by a quarter turn to the left.
Folding lever
Fig. 24: Extraction of the reference electrode
→
Pull the folding lever to remove the reference electrode.
→ Dispose of the used reference electrode in an environmentally-friendly way.
→ If necessary, clean the empty seating of the reference electrode with a dry cloth or cotton swabs.
3. Prepare the new reference electrode.
→
Carefully remove the protective cover because it contains some storage solution.
Protective
cover
Seal
Capillary tube
Fig. 25: Preparation of the new reference electrode
→ Make sure that the seal is in its groove on the reference electrode.
→
If necessary, remove the solid deposits from the capillary tube.
English
Type MS01