Tech Blog

Product Configuration – Nautilair Family

Posted by Orders Optimal on

Application Information Nautilair variable speed brushless DC blowers have been engineered to deliver a measured air/fuel mixture in gas-fired burner systems for optimized combustion and reduced nitrous oxide and carbon monoxide emissions. Mechanical Characteristics Nautilair blowers are designed for combustion applications and are typically mounted directly to the inlet of the burner. The fan housings are sealed to allow for the combustion gas and air to mix inside the blower. Fans have been designed to optimize air/gas mixtures and provide high efficiency combustion. Their design uses an offset motor that allows for higher temperatures and condensation in the fan housing...

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Rotron Blower Motor Troubleshooting

Posted by Optimal Tech on

Troubleshooting Blower Disassembly WARNING: Attemping to repair or diagnose a blower may void Rotron's warranty. It may also be difficult to successfully disassemble and reassemble the unit. 1. Disconnect the power leads. CAUTION: Be sure the power is disconnected before doing any work whatsoever on the unit. 2. Remove or seperate piping and/or mufflers and filters from the unit 3.Remove the cover bolts and then the cover. NOTE: Some units are equipped with seals. It is mandatory that these seals be replaced once the unit has been opened.  4. Remove the impeller bolt and washers and then remove the impeller. NOTE: Never...

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Installation Instructions and Maintenance for SL, DR, EN, CP, and HiE Series Blowers

Posted by Optimal Tech on

1. Bolt It Down - Any blower must be secured against movement prior to starting or testing to prevent injury or damage. The blower does not vibrate much more than a standard electric motor. 2. Filtration - All blowers should be filtered prior to starting. Care must be taken so that no foreign material enters the blower. If foreign material does enter the blower, it could cause internal damage or may exit at extremely high velocity. Should excessive amounts of material pass through the blower, it is suggested that the cover(s) and impeller(s) be removed periodically and cleaned to avoid...

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Blower Performance Differences: Where Do Slight Variations in Blower Output Originate?

Posted by Optimal Tech on

Blower performance depends on dozens of electromagnetic and geometric design features. Stack-up of tolerances heightens blower-to-blower performance disparities — even between those supposedly made of identical parts. Final calibration minimizes such output variation, but slight deviations always persist. This is why mechanical efficiency plots serve as guidelines on capability ranges — and why feedback and blower controls that compensate for specific motors and installation conditions are so useful. After all, most geometrical blower tolerances aren’t of direct concern to OEMs and design engineers looking to apply blower. Rather, designers are more focused on the overall airflow of a given blower...

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Blower airflow separation: Where are bypass blowers useful?

Posted by Optimal Tech on

In bypass motors the work is independent from the cooling air. A separate fan directly cools the motor armature and field. Usually the cooling air enters and exists through slots in the equipment housing.  Bypass blowers are electric-motor-driven blowers that segregate two paths of air: • Working Air: the path of air for performing the application’s blowing or vacuum function • Cooling Air: the path of air to cool the blower’s motor during operation. In contrast, through-flow blowers make double use of a single stream of blower airflow by channeling that flow over the motor and electronics for cooling.   ...

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