Section R. 408.10917 - Fire pumpsRule 917.
(1) A fire pump shall be operated not less than once a month as follows: (a) A steam fire pump operated until water is discharged freely from the relief valve.(b) A centrifugal pump operated at rated speed.(c) If power is provided by an internal combustion engine, the engine shall be run for not less than 30 minutes to bring it up to normal operating temperature.(d) An automatically controlled pump tested manually shall have not less than 1 start each month accomplished by reducing the pressure in the water pressure sensing line or with a larger flow from the entire system.(2) A fire pump shall be maintained in a room above freezing temperature.(3) A fire pump shall be used for fire protection only.(4) A fire pump shall be tested to rated capacity not less than once a year.Mich. Admin. Code R. 408.10917