Next Generation of A. O. Smith Motors Equipped with eMod Technology Now Complies with ASME A112.19.17 SVRS Standard
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A. O. Smith Electrical Products Company is introducing an enhanced version of its eMod(TM) pool and spa motor technology that is Safety Vacuum Release System (SVRS) compliant for suction lift applications.
In addition to delivering all of the features and benefits of the original line of A. O. Smith and Century eMod pool and spa motors, the design is capable of detecting full-body suction entrapment and shutting off the motor and pump in less than three seconds. This enables the new eMod motors to comply with the ASME A112.19.17 SVRS standard.
"This advancement is significant because the North American pool and spa industry has been searching for an SVRS that is easy to install, maintenance free, and passes the ASME standard," Christopher L. Mapes, president of A. O. Smith Electrical Products Company, observed. "Our engineers have been working diligently to improve the response time of the original eMod system, and they have come up with the technological breakthroughs necessary to accomplish this ."
Unlike a conventional SVRS, which is typically an add-on device, eMod load-sensing electronics can be integrated into all single-speed and two-speed A O. Smith and Century Centurion® C-face, square flange, and through-bolt pool and spa motors.
"We think that the industry and the consumer will embrace this technology because a pool owner can upgrade his or her inground system simply by replacing their existing pump or motor with one equipped with eMod technology," Steve O'Brien, vice president-marketing A. O. Smith Electrical Products Company pointed out.
As with the original eMod technology, the new eMod automatically calibrates to the specific hydraulic and filtration characteristics of the pool at initial start-up. The electronics constantly monitor the input power of the motor and detect any changes in the operating conditions of the pool such as clogged drain, jammed pump or locked rotor, drops in input power (that can cause "dry running" of the pump), or suction entrapment. Any time the electronics detect these conditions, the motor and pump automatically shut off, avoiding damage to the pump, motor, or pool system itself.
"The motor is designed to fail in the "off" position," O'Brien explained, "meaning if the electronics are defeated or tampered with, the motor shuts off." The load-sensing circuitry is protected by an impact-resistant, high-density plastic compartment. The protective compartment is attached directly to the motor and resists weathering, ultra-violet light, and is tamper-proof.
"While A. O. Smith and Century motors equipped with eMod load-sensing technology are an important part of a safe pool environment, they do not solve the total entrapment issue by themselves," Mapes cautioned. For the full guidelines on entrapment refer to the Association of Pool and Spa Professionals web site, www.apsp.com or the U. S. Consumer Product Safety Commission at www.cpsc.gov
A. O. Smith Electrical Products Company, with headquarters in Tipp City, Ohio, is a leading manufacturer of alternating current (A/C) and direct current (D/C) fractional horsepower motors, hermetic motors for air conditioning and commercial refrigeration compressors, and integral horsepower motors. The company employs more than 13,000 people at facilities in the United States, Mexico, China, England, and Hungary.
