If a pump at a whirlpool bathtub is located more than 2 feet from the access opening, what is the minimum size opening that should be installed?

The correct choice of 18 x 18 inches for the access opening relates to the guidelines set forth for ensuring that a serviceable area is adequate for maintenance and repair of the pump in whirlpool bathtubs.

When the pump is located more than 2 feet away from the access opening, it requires a larger opening to allow for enough space for a technician to comfortably reach and manipulate the pump in case of servicing needs. The minimum size chosen ensures that there is sufficient room not only to access the pump but also to work around it without risk of damaging other components or causing inconvenience.

Access openings that are too small may lead to difficulty in reaching essential parts, which could create additional challenges during maintenance, potentially resulting in incomplete repairs or damage to the pump or surrounding installations. Hence, an 18 x 18 inch access opening strikes a good balance between providing sufficient access without being unnecessarily large.