R 325.2155 Cartridge-type filters.

Rule 55. (1) A swimming pool owner shall ensure that a cartridge-type filter system meets all of the following requirements: (a) Is designed for a maximum flow rate of 3/8 of a gallon per minute per square foot of filter area. (b) Is equipped with a means to drain the filter tank to prevent equipment room flooding. (c) Is provided with a spare set of cartridges that is not less than 100% of the required filtration area. (d) Is provided with a means, on the premises and acceptable to the department, for cleaning the cartridges according to the manufacturer's recommendations.