
Originally Posted by
CraigE
Definately true. I have seen a few fail from compaction while showing fully charged. A good rotation and shake once a month takes care of this. This applies to all extinguishers inc 9kg units. As a matter of course we turn them all upside down before using to mix contents.
I know this is an argueable point, but technically speaking the contents shouldn't compact, as the powder is under pressure and therefore in suspension.
Compaction was certainly an issue in the older types which had a dry nitrogen cylinder inside the extinguisher. With these you could unscrew the head, remove the cylinder, stir up the powder and replace cylinder and head.
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REMLR No 143
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