Retsch AS 200 control - natural frequency - Manual (Page 21)

Retsch GmbH 21
The water quantity added should always be dosed in
such a way that the sieve surface is only just wetted.
Use vent rings
Accumulation of water in the sieve set can cause
overloading and therefore damage or destruction of the
wire mesh. Vent rings are necessary in order to prevent
water accumulation.
The loading diagrams given in these operating
instructions are not applicable to wet sieving.
Binding information on wet sieving is not possible
owing to the non-definable water quantity in the
sieve set.