Retsch ABP 250, Руководство пользователя

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Operating the device
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6.7 Starting the crushing process
NOTICE
N16.0003
Damage to mechanical components
Overfilling the feed hopper and the grinding chamber

Feeding too much sample material can result in increased wear to the
jaws and wearing plates and to blockages.
•
Do not use the feed hopper for storing sample material.
•
The grinding chamber should not be filled over 65%.
•
The sample material may have a maximum length of
120 mm x 90 mm.
•
Fill larger and firmer sample material slowly and gradually into the
feed hopper.
•
If necessary, pre-grind larger and firmer sample material using a
larger gap width.
The purpose of the feed hopper ( D ) is to add the sample material to the grinding chamber, hold
back sample material that splashes back and prevent anybody reaching into the grinding
chamber.
Larger pieces of sample material should only be placed individually into the feed hopper (
D ).
Observe the change in the grinding noise, and only add more sample material when there is a
distinct reduction in the grinding noise.
6.8 Adding sample material
CAUTION
C10.0045
Damage to hearing
A high noise level may arise depending on the type of the material, the jaws
used and the duration of grinding

Excessive noise in terms of level and duration can cause impairments or
lasting damage to hearing.
•
Suitable sound insulation measures must be provided or hearing
protection worn.
NOTICE Start the ABP 250 before you begin adding sample material! The ABP 250 can only
be started when the door has been closed and the collecting receptacle inserted.
The maximum feed size must not exceed
120 mm x 90 mm.

While the device is running , fill the sample material slowly and continuously into the feed
hopper ( D ). This guarantees more effective and faster grinding.

Depending on the properties of the sample material, the crushing chamber may not be filled
more than 2/3 full, otherwise the jaws can become blocked and the motor protection switch
turns the drive off. Continuous overfilling produces extreme wear on the wearing plates in
the crushing chamber.

During the grinding process, pay attention to the quantity of sample material in the collecting
receptacle ( N ). The collecting receptacle ( N ) must be emptied as soon as the filled quantity
reaches 90% of its volume.