Retsch AS 200 control - natural frequency - Manual (Page 6)

Retsch GmbH 6
Summary of safety regulations – part 2
Wet sieving
Never operate your AS 200 control directly in water.
Danger through current surge.
During wet sieving always operate your AS 200 control connected to a mains socket which is protected by
an FI protective (safety) switch.
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.
Sieving aids
Make sure that the wire mesh of the sieves is not excessively stretched through overloading with sieving
aids, since this will impair the precision of your analytical sieves.
Quantities of material to be sieved
For sieving processes with only 1 to 3 sieves we recommend that short threaded rods are used – see
accessories.
Long, projecting threaded rods disturb distribution of the material to be sieved through their natural
vibration characteristics.
Cleaning
Do not clean the AS 200 control under running water.
Danger to life through current surge.
Use only a cloth moistened with water; solvents are not allowed.
Wearing parts
These operating instructions do not include repair instructions. For your own safety repairs should be
carried out only by Retsch GmbH or an authorized agency and Retsch service technicians.