Retsch PM 400 - Manual (Page 6)

08.02.2012 Retsch GmbH
6
Doc. Nr. GB 98.535.9999
Safety instructions – summarised, part 2
Check firm fitting of the milling cups, particularly with long-term milling operations, according to the following time
schedule: after 3 mins, after 2 hrs, after 5 hrs then every 10-12 hrs. A clamping force of 10 Nm for the milling cup
clamping device is optimum. Danger of ejection of milling cup.
Always ensure that the red sleeve is properly locked in place. Otherwise the milling
cup is not clamped adequately.
Danger of ejection.
Safety instructions when starting the PM400
Before starting the machine ensure that the milling cup is clamped.
Milling cups can be ejected – danger of injuries and damage to equipment.
We recommend that this safety instruction is not faded out.
Always insert 2 opposite or 4 milling cups. All cups must have the same gross weight.
Milling cup filling level
If the filling level of the milling cup is too high or too low this impairs the milling result and can cause damage (increased
wear) to the milling fittings.
Handling milling cup type „C“
Please take necessray measures to prevent danger to persons, according to the dangerous nature of your milling material.
When removing and opening hot milling cups it is essential to wear protective gloves.
Danger of burning the hands.
Identification of milling cups
Do not subject milling cups with ceramic inserts to sudden temperature differences when rinsing.
The ceramic inserts can crack through sudden temperature differences.
Tips for ultra-fine milling
When using easily flammable materials it is essential to observe the section „Wet milling of easily flammable materials”.
Danger of explosison.
Wet milling of easily flammable materials
Before using easily flammable materials as milling auxiliary agents it is absolutely essential to specifiy in writing explosion
protection documentation with supplementary organisational measures, and to make this available to operators. In the EU
this procedure is stipulated in directive 89/391/EEG, according to articles 118 and 118a.
For wet milling operations in milling cups with material inserts do not use old closing devices which clamp only the gripping
edges of the milling cups. If an internal pressure is developed the material inserts can be pressed out.
Cleaning
Do not clean the PM400 with running water.
Danger to life through current surge.
Use only a cloth moistened with water. Solvents are not permitted.
Maintenance (monthly)
Easy running of the threaded spindle and locking sleeve is essential for reliable clamping of the milling cups.
Locking sleeves which do not slide downwards automatically through spring tension cannot reliably prevent loosening of the
threaded spindle. The milling cups can then be ejected.
Easy running of roller 1 on the closing pin is the prequisite for reliable closing of the housing lid of the PM400.
If the values drop below D1 and H1 operating reliability is no longer guaranteed.
The milling cups can be ejected.
Wearing parts
These operating instructions do not include repair instructions. For your own safety repairs should be carried out only by
Retsch GmbH, an authorised agent or service technicians.