BUCHI Mixer B-400 - Manual (Page 13)

11
BUCHI Mixer B-400
Fitting and dismantling the diaphragm seal
Figure 9: A leaking diaphragm
seal Figure10:Flattening the
diaphragm seal
The diaphragm seal is fitted by pushing and removed by pulling.
No tools are required but the cutter must be dismantled first.
Take care not to deform or damage the sealing lips and make
sure that the positioning lug
ቢ does not get caught under the
holding clip.
Leaking diaphragm seal
The diaphragm seal is not absolutely leak-proof. If its sealing
effect deteriorates, it can be dismantled and flattened again with
a little pressure.
6 Maintenance
ቢ
When you use a diaphragm seal for the first time, fill the sample
beaker up to the blue mark
ቢ (see Chapter 5, Operation)with
warm water and insert in the mixer. Start the mixing cycle and
allow to run for 10 seconds. This will prolong the life of the
diaphragm seal.
The diaphragm seal is a wearing part that needs to be replaced
from time to time.
Fitting and dismantling the diaphragm seal holder
and the cover
ቧ
Figure 11: Drawing of the cover
1. Insert the spring ቤ in the cover ቢ.
2. Connect the cover ቢ to the holder ቦ.
3. Align the mark on the holder ቦ with the mark ብ on the
cover ቢ.
4. Connect the two parts by pressing and turning to the left
simultaneously.
5. Align the two marks ባ + ብ.
6. Move the marks ባ + ብ so that they face the front.
7. Move the cover ቢ over the shaft.
8. Latch the cover ቢ in place by pressing and turning to the
right simultaneously.
9. The membrane ቧ is pressed gently into the holder ቦ.
Take care not to deform or damage the sealing lips and make
sure that the positioning lug
ቢ does not get caught under the
holding clip.
ብ
ቢ
ቦ
ቤ
ባ