MAINTENANCE
25
6.9 Removal And Replacement Of Centrifuge Bowl
To remove the bowl for cleaning or disinfection purposes proceed as follows:
Open the lid, disconnect the centrifuge from the power supply and remove the
rotor (if fitted).
Peel back the lip of the seal above the bowl vent (inside the bowl at right) note
position of the vent then lift the bowl by the vent hole above the seal at this point.
Now lift the bowl by the centre boss and work the seal lip away from around the
entire circumference of the bowl.
To refit the bowl:
Bend the lip of the seal to point upwards at any convenient position. Lower the
base of the bowl on to the seal and work the seal around the side of the bowl so
that the whole seal edge is pointing upwards and embracing the lower part of the
bowl. Lower the bowl, applying slight downward pressure with a twisting motion
and ease downwards until the seal lip is just under the bowl rim, with the vent in
the bowl in original (noted) position.
Insert the lid seal tool (Figure 5.) between the seal and the lip of the bowl and
ease the seal over the lip of the bowl while applying downward pressure on the
bowl centre boss. Work the tool round the rim of the bowl gently easing the seal
over the bowl. Exert further downward pressure on the boss to locate the bowl rim
in the recess of the seal.
Figure 5.
Use of lid seal tool
6.10 Lid Friction Adjustment
If the lid friction collar needs adjustment, e.g., because lid falls slowly downwards,
turn the socket screw, which is visible through the small hole located centrally near
the lower edge of the inside of the lid, using a 4mm socket wrench. Turning
clockwise will tighten, and anti-clockwise will loosen, friction resistance on the lid.
See Figure 6 (upper inset, annotation 20).
