Cleaning and maintenance
Revision 7 | Operating instructions HE 50 21 | 26
6.1.2 Threads and contact surfaces of the measurement cell
The threads and contact surfaces of the measurement cell can become blocked with
oily products after frequent measurements. This means the measurement cell can only
be screwed closed by exerting increased force.
Clean the threads of the spindle on the measurement cell bottom part
using the hand brush or hard brush.
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Clean the top contact surface on the spindle of the measurement cell
bottom part using a clean, lint-free cloth.
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Carefully screw the cleaning screw supplied with the product into the
measurement cell top part.
The milling disk should be pointing downwards when you do this so that
no dirt will get into the threads.
Turn the cleaning screw to and for several times to release adhering dirt
particles.
Then clean the cleaning screw with the hand brush.
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In case of severe contamination, clean the contact spring inside the
measurement cell top part carefully using a commercially available
cosmetic cotton wool bud.
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NOTICE
To avoid damage to the threads, take care not to mis-thread the
cleaning screw.
6.1.3 Measurement device
Clean the surface, the guide pin and the contact pins with a clean, lint-
free cloth.
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