There are a number of service shops that promote their ability to rebuild or service FULLER & RoFlo Rotary Vane Compressors. We continually see their work, and we also repair their errors. All too often, the customer accepts poor performance or excessive maintenance costs and down time and attributes it to the compressor instead of improper assembly, improper machining, and substandard parts.
Continually upon inspection, we find and report to the customer the following discrepancies in workmanship or parts (partial list, part 2 to follow). If you are experiencing any of the following, we have decades of experience to help you not only repair your issues but save you money, too. Learn more HERE or reach us at sales@tescorp.com.
*Incorrect tolerances for bottom clearance, rotor stand-off, and rotor float
It’s understandable even a good machinist is not aware of slippage. Volumetric efficiency, polytrophic compression and the effects of all of these to the efficiency and the longevity of the compressor are complex.
*Incorrect bearings
To most, the right size bearing is that which fits the shaft. There are specific bearing tolerances and clearances to compensate for the operating temperatures.This specification is nonstandard and requires the bearing manufacturers to further machine their bearings beyond that of their standards.
*Inferior quality vanes
The new TESCORP “PLATINUM” Series carbon composite blade has much greater blade stress capabilities, allowing for smaller thicknesses and less weight, therefore fewer forces due to centrifugal force. The carbon fiber blade is less abrasive, therefore less lubrication required and better thermal capabilities to withstand the high temperatures of compression. The TESCORP Platinum series carbon-fiber blade is superior to the previous and existing blades in performance and endurance and is a proven enhancement to the rotary vane compressors.
*Gaskets
The compressor gasket is not just a seal between the cylinder and the head. It is the way that the fixed end clearance is established and the rotor float adjusted. The gaskets utilized are a composite of various gaskets each with a specific thickness. In establishing the proper clearances during rebuild, the gaskets must be selected from this kit and applied. Any variance to this procedure results in improper clearances, excessive wear, and quite often catastrophic failure.
The rotary vane compressors did not just happen. They were designed by engineers. They have evolved through hundreds of different applications of service, and many different industries by engineers. They have been in production for over 75 years and been produced in tens of thousands by a number of manufacturers. They are continually updated and upgraded by new technologies and materials. The exacting tolerances for the proper rebuild and their replacement parts are a result of engineers that specialize in compressor design and application. TESCORP has invested millions of dollars in the equipment, engineering, and components to remanufacture, repair, and continue the evolution of the rotary vane compressors and their parts.
For more information and to correspond with one of our senior sales reps, contact us HERE.