Retsch DM 400 - Manual (Page 49)

Servicing
49
7.3 Replacing the gear oil
The gearbox of the motor is filled with gear oil on delivery (ISO VG
220). A removable fill screw (o) is present in the top of the gearbox
housing to change the gear oil. To reach this the housing cover must
be removed.
This oil must be changed after approx. 5 years.
7.3.1 Conducting the gear oil change
1. Run the DM400 for approx. 15 minutes so that the gear oil inside
warms up and drains off better.
2.
3.
Switch the device off and unplug.
DANGER!
Pull the plug out and secure the device to prevent
accidental restarting!
Unplug the device and remove the cover (see chapter “Position-
ing ”)
4. Remove the motor securing screw (m) under the oil drain plug (n)
using an M10 Allen key!
The gearbox contains approx. 0.22 litres of ISO VG
220 gear box oil!