NAC444.486. Pumps.

     1. A pump and motor must be provided for circulation of the spa water. All pumps must provide the conditions of flow required for filtering and cleaning the filters against the total dynamic head developed by the complete system.

     2. With all pressure filter systems, a suitable removable strainer or screen must be provided before circulation pumps to remove debris, hair, lint and other solids. Water entering the pump must first pass through the screen.

     3. Pumps must be designed to perform the functions for which they are intended. Units must be accessible for inspection and service. Replacement parts must fit with existing parts in the pump without the need for redrilling mounting holes or otherwise altering the replacement part of the pump.

     4. The pump and component parts must be designed and constructed to operate safely.

     5. Proper direction of rotation for the pump must be clearly indicated by an arrow on the pump data plate, on a separate plate attached to the pump, or cast into the pump itself.

     6. Pumps used on spas must be designated by the NSF International as complying with all applicable requirements of NSF International Standard 50 or, in the absence of applicable requirements, be approved by the health authority.

     7. Hydrotherapy pumps and piping systems must be independent and must not be interconnected with the filtration plumbing system.

     [Bd. of Health, Public Spa Reg. Art. 22 §§ 22.1-22.5, 22.10 & 22.11, eff. 11-27-79]—(NAC A 11-2-88; 1-16-96)