BUCHI Cartridge C-670 - Manual (Page 18)

BÜCHI Cartridger TM C-670
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6 Maintenance
6 Maintenance
6.1 Cleaning the device
No special cleaning is normally required when the device is
used correctly.
The housing can be wiped off with a damp cloth. Fine dust
from the gel can also be vacuumed.
6.1.1 Replacing the safety frit
The safety frit in the cartridge holder should be inspected from
time to time and be replaced as necessary. Use the small
cartridge with the glass ball to test the permeability of the frit.
If after opening the vacuum valve the ball rises quickly upwards
and remains there, the suction output is optimum and the
safety frit need not be exchanged.
To exchange the frit you need only unscrew the holder, replace
the frit and screw it tight again. Never try to blow out an
already used safety frit with compressed air or to clean it
„chemically“ or in an ultrasonic bath.
Incorrect operation of the Cartridger without a safety frit
shortens the useful life of the vacuum valve and the vacuum
pump. Such usage makes any guarantee claim null and void.
Figure 6.1: Procedure for replacing the safety frit