Cleaning The Sensors - Infors HT Labfors 5 Operating Manual

Labfors 5 – Version for Microorganisms
Cleaning and Maintenance
Procedure

10.5 Cleaning the Sensors

Page 170 of 205
Vessel top plate, with regard to its particular characteristics

Particulars when cleaning the top plate
Do not place the top plate on the stirrer shaft (if stirrer shaft is

not removed).
Never remove the drive hub and the mechanical seal! This

may only be carried out by qualified personnel.
NEVER clean the vessel top plate in the dishwasher!

ATTENTION
The mechanical seal is very delicate. No water/cleaning agent
may enter it and the silicone hose on the bottom of the drive hub
may not be pulled off during cleaning of the vessel top plate.
INFORMATION
Cleaning of the sensors, hoses and pump heads as well as the
basic unit and the exit gas cooler are described in separate sec-
tions.
Proceed as follows for cleaning:
1. Clean parts with distilled water and a soft sponge or in the
dishwasher (except for the vessel top plate!).
Ensure that the deposits in the dip tubes are removed. Use
0.1 N caustic soda solution followed by distilled water as nec-
essary. For this, see the "Cleaning the Culture Vessel" sec-
tion.
2.
Dry all parts, including the inner parts of the dip tubes, sparg-
ers and feed needles.
3.
Check all O-rings for cracks or damage. Replace them if nec-
essary.
4.
Store the vessel, vessel top plate and accessories in a clean,
dry state in a location where they cannot be physically dam-
aged (e.g. by falling), or prepare them for the next fermenta-
tion/cultivation.
Apart from antifoam and level sensor, all sensors are cleaned and
maintained according to the descriptions of the sensor manufac-
turer.
22 January 2019