When necessary, on account of low pressure or special operating conditions, to install a booster pump on the service to any premises, such pump shall be equipped with a low pressure cut-off switch designed to shut off the pump when the pressure on the inlet side is 25 p.s.i.g. or lower. The consumer shall maintain the cut-off device in proper working order, and to certify to the city at least once a year that the device is operable.
(`64 Code, Sec. 33-57) (Ord. No. 1009)