RoyF wrote:
I pound mine once every month year round. Someone on this forum who claimed to be an expert recommended monthly shaking or pounding.
I turn the dry chemical fire extinguishers that I have in my home and in our garage upside down once a year and hit them with a hard rubber mallet several times.
I can see and understand why it may be a good idea to do the same to dry chemical extinguishers in an RV more often like suggested. From the jostling they get while traveling down the road, the dry chemical powered will settle more quickly and pack to a pretty hard substance. Once that happens, if you need to use the extinguisher, basically all you will get out is compressed gas.