FRITSCH PULVERISETTE 5/4 classic line - Manual (Page 50)

7.2.4 Cleaning the valves
f Valve screwdriver
g Valve insert
d Valves
Both valves (d) should be cleaned after every grinding!
n Insert the thin end of the valve screwdriver (f) from above into the
valve (d) and turn anti-clockwise.
n Screw out the valve insert (g).
n Depending on the soiling, clean the valve insert (g) with compressed
air, or place it in a small glass container filled with alcohol and clean
in an ultrasonic cleaner (LABORETTE 17) and then dry carefully.
n After the two valve inserts have been removed, the two valve
holders can be cleaned with compressed air from above the lid.
7.2.5 Installing valve inserts
n Insert the valve insert (g) into the valve (d) with the spring pointing
upwards.
n With the valve screwdriver (f), screw the valve insert clockwise.
The following gassing lids for the grinding sets are available, each with
two valves and a soft sealing ring:
Material Order number
Hardmetal tungsten carbide 250
ml
50.8600.00
Tempered chrome steel 80 ml 50.8700.00
Tempered chrome steel 250 ml 50.8500.00
Tempered chrome steel 500 ml 50.8400.00
Stainless steel 80 ml 50.8800.00
Stainless steel 250 ml 50.8300.00
Stainless steel 500 ml 50.8200.00
Agate 250 ml 50.8100.00
Agate 500 ml 50.8000.00
NOTICE!
The soft black sealing rings made of "Viton" can endure
temperatures of approx. 200 °C.
The valves (d) can endure temperatures of approx. 180 °C
for one hour at most.
Accessories
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