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Kamper · 07-27-2005, 08:00 PM

I have heard differing explanations about dry-chemical extinguishers. Two tech/inspectors have told me to my face that the contents may crystalise after sitting for about 3 years undisturbed. That's why they do an inspection every 2 years.

On another forum a member claiming to be a tech said the "shake" was just for show to make it look like they were doing more than a visual inspection of the pressure guage and general cylinder condition.

Whatever the truth I prefer to give mine a little shake jsut to be safe.

07-27-2005, 08:00 PM	#11
Kamper Senior Member Join Date: Jul 2005 Location: Thornton's Ferry Posts: 1,314 Thanks: 67 Thanked 172 Times in 128 Posts	Fire Extingushers I have heard differing explanations about dry-chemical extinguishers. Two tech/inspectors have told me to my face that the contents may crystalise after sitting for about 3 years undisturbed. That's why they do an inspection every 2 years. On another forum a member claiming to be a tech said the "shake" was just for show to make it look like they were doing more than a visual inspection of the pressure guage and general cylinder condition. Whatever the truth I prefer to give mine a little shake jsut to be safe.