Infors HT Labfors 5, Руководство по эксплуатации

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Labfors 5 – Version for Microorganisms
Cleaning and Maintenance
22 January 2019 Page 177 of 205
10.14 Decalcifying Equipment via Vessel Jacket
A turbid or milky coloured appearance of the glass of the vessel
jacket may be a sign of lime scale in the equipment with water tem-
perature control system. A first possible procedure may be to de-
calcify the equipment via the vessel jacket.
If there are still some interferences observed with the temperature
control system after doing so, then a thorough decalcification of the
equipment may be necessary. Refer to chapter “Decalcifying the
Equipment” in this case.
Prepare the following things and note the following points before
begin of the procedure:

Use phosphoric or citric acid (max. 5 %) as decalcifying agent.

Prepare a funnel and piece of hose for connection to the water
overflow of the vessel jacket.

Be sure to respect the in chapter “Technical Data” specified
inlet pressure.
Proceed as follows:
Procedure 1. Completely empty the vessel jacket.
2. Fit the piece of hose to the water overflow connection of the
vessel jacket.
3. Fit the funnel to the hose end.
4. Fill the decalcifying agent into the vessel jacket.
5. Connect the vessel to the basic unit.
6. Completely fill the vessel jacket with water.
7. Heat the vessel at a temperature of 50 °C for an hour.
8. Decrease the temperature and thoroughly rinse the jacket with
cooling water.