Minifors 2 - Benchtop Bioreactor
Cleaning and Maintenance
07 February 2019
Page
185
of
214
11.3 Removing the Vessel Top Plate and Accessories
All accessories must be removed for thorough cleaning of the indi-
vidual parts of the culture vessel. This is described in the following
sections. The cleaning itself is described in the chapter “Cleaning
and Storing Individual Parts”.
The cleaning of the hoses with pump heads, the basic unit, operat-
ing panel and the exit gas cooler are described in separate sec-
tions.
Sensors from third-party manufacturers are cleaned according to
their manufacturer’s specifications.
11.3.1 Removing the Exit Gas Cooler
Proceed as follows:
Procedure
1.
Unscrew the exit gas cooler from the vessel top plate port by
hand.
Ensure that the O-ring does not get lost.
2.
Gently release the hose clamp with the hand wheel, pull off
the exit gas filter and dispose of it.
3.
Remove the pressure hose piece to thoroughly clean the exit
gas cooler. (For details see the chapter “Cleaning the Exit Gas
Cooler”.)
11.3.2 Removing the Sensors
Proceed as follows:
pH, pO2
Procedure
1.
Carefully unscrew the sensors by hand (no tools!) from the
vessel top plate ports.
2.
Clean/service the sensors according to the sensor manufac-
turer guidelines.
Antifoam/level sensor
Procedure
1.
Loosen and remove the fastening screw beside the sensor by
hand.
2.
Loosen the slotted-head screw at the clamping adapter.
3.
Carefully remove the sensor from the clamping adapter.
4.
Pull the clamping adapter out of the vessel top plate port by
hand.
Ensure that the outer O-ring at the clamping adapter does not
get lost and that the insulation is not damaged.
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