Check and replace, if necessary, fastenings / holders
Check and replace, if necessary, fastenings / holders
Dedust the blackboard box, chain and guiding rails
Oil the chain block, lubricate the guiding rails
Check the mechanics, balance the blackboard, if necessary
Smooth the running rolls and lubricate them
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Example: Blackboard reconstruction Glass blackboard
Magnetic adhesive surfaces
(Junior High School, Burgholzstr. 6, 96110 Scheßlitz) |
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The chain block was hooked in, readjusted |
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Mechanics |
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The cracked glass blackboard surface was replaced by a steel surface (magnetically adhesive) |
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The bare blackboard surface was recoated |
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The blackboard was balanced, and the guiding strip for the counter weight was relocated |
Another example:
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Cracked glass
Conversion as a magnetically adhesive surface |
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A conversion of each blackboard model or a blackboard with side blackboards with magnetically adhesive surfaces (steel) is possible!
refer to 
