SECTION 265.158. General Requirements for Pumps and Motors

(a) Safe pump operation. The installation of a pump and component parts shall provide safe operation in accordance with manufacturer's instructions.

(b) UL and NEMA requirements. A pump shall comply with UL or National Electrical Manufacturers Association requirements. Motors shall comply with UL requirements for motors and shall be constructed electrically and mechanically to perform satisfactorily and safely under the conditions of load and environment normally encountered in lagoon installations.

(c) Backflow prevention. A priming device for a pump receiving piped water from a public water supply providing potable water shall be isolated from the potable supply by means of a cross-connection control device (backflow prevention device) approved by the TCEQ or local regulatory authority.

(d) Backflow prevention assembly testing. A backflow prevention assembly shall be tested upon installation and certified to be operating within specifications by a licensed backflow prevention assembly tester. A backflow prevention assembly shall be tested and certified to be operating within specifications at least annually by a licensed backflow prevention assembly tester. Documentation of testing and certification shall be kept for at least three years and shall be provided during an inspection.

(e) Pumps and motors. A pump or motor provided for circulation of water shall meet the filter design range of flow required for filtering and cleaning the filters against the total dynamic head developed by the complete system and to meet required water clarity.

(f) Cleanable strainer or screen. For a lagoon constructed on or after the effective date of this subchapter, a pump, except a pump with a vacuum filter, shall have a cleanable strainer or screen upstream of the circulation pump to remove waste that shall be readily accessible and cleaned as per manufacturer's instructions.

(g) Motors. A motor shall:

(1) be capable of operating the pump under full load with a voltage variation of plus or minus 10% from the nameplate rating;

(2) have thermal or current overload protection, either built in or in the line starter, to provide locked rotor and running protection; and

(3) comply with UL requirements.

(h) Emergency shutoff switch. An emergency shutoff switch shall be provided for service personnel to disconnect all power to circulation and jet system pumps. An emergency shut-off switch shall be readily accessible to operators and located within sight of the lagoon and not more than 50 feet from the lagoon.

Source Note: The provisions of this §265.158 adopted to be effective March 1, 2020, 45 TexReg 1024