Robinson PW fans are furnished with radial bladed wheels specifically suited for applications involving continuous operation at temperatures from 70° F to 2000° F. PW units are often constructed of special alloy materials for high-temperature service, but are also used for low temperature operations. Other Robinson fans designed for high-temperature applications include axial flow and FC (forward curve) blade series.
Robinson’s PW design is a result of thorough and exacting laboratory testing and documented performance ratings. These ratings were calculated on the basis of complete fan units, including wheel, casing and inlet section.
Components are also furnished separately by Robinson, but the fan unit must be set up with wheel, shaft, casing, inlet and all other components in place to Robinson design specifications to achieve rated performance.
Dye-penetrant testing, ultrasonic testing, vibration analysis, X-ray testing, computer finite element stress analysis and, in some cases, magnetic-particle inspection are utilized to ensure that the PW series fans meet Robinson’s stringent quality-control requirements. Other steps taken to ensure long fan life include dynamic balancing of the wheel and shaft assembly on independent, computerized equipment. Full-scale mechanical testing is performed on the assembled PW unit (when possible) prior to shipment.
Robinson field service representatives are available for troubleshooting, field balancing and diagnostic inspection of fans and other types of rotating equipment. These personnel supervise certain on-site repairs or, if necessary, determine whether the unit must be factory repaired.
Robinson repairs and rebuilds PW units as well as types of industrial fans, regardless of original manufacturer. In addition to fan repair as a cost-saving alternative, Robinson redesigns and upgrades existing air-moving equipment to increase capacity and improve efficiency.