Archives for April 2016

It is time to get generators and motors ready for the long hot summer. For many this includes cleaning their critical motors and generators for the upcoming summer months.

Carbon Dioxide (CO2) (Dry Ice) cleaning has been gaining in popularity for many large machine users to accomplish this dirty and time consuming task.

Dry Ice blast cleaning for generators and motors can be used for:

• Removal of carbon deposits
• Removal of grease/oil build up
• Cleaning of buss bars, Stator, Stator Core, Rings, Windings, and other components

Among the advantages reported include:

• Reduced chemical usage (reduced V.O.C.
• Increased speed in the cleaning process
• Dry ice blast is non-abrasive compared to conventional methods
• No drying time

Dry ice blasting is best used for loose service contamination on hard non-porous surfaces. Depending on the skill of the operator, the contaminates are reduced considerably on the first pass and nearly eliminated after two or three more passes. Dry ice blasting can be completed much faster than other conventional processes using walnut shell, corn cob, or baking soda as an abrasive. While the actual time spent performing the blasting (cleaning) may be longer, the minimal drying time and clean up once the work is completed makes this a much more efficient option for cleaning your machines.

While dry ice blasting has several advantages it also has its limitations. The blasting requires a line of sight for the operator, and some areas of a machine cannot be cleaned even with the many new cleaning nozzle designs available. So there most likely will always need to be some machine disassembly.

The last possible disadvantage of dry ice blasting is the skill level of the operator. With dry ice blasting if the CO2 pellet size is too large and/or the pressure too high the process becomes too aggressive and can damage insulation and coating systems. So verification of your service provider’s qualification and training program for their operators is a must prior to bringing this cleaning method into your plant.

– Article provided by our friends at PdMA. Contact us for all of your PdMA MCE testing and preventive maintenance needs!

Siemens was the first to begin large-scale manufacturing of copper rotor motors, and with efficiency as high as 93.7%, Siemens copper rotor technology is second to none in energy savings today.  These industry workhorses are ideal for use in the chemical processing, mining, foundry, pulp and paper, waste management and petroleum/chemical applications. They are available with a wide selection of application-matched modifications to meet specific needs, ambient conditions and installation requirements. They are available with NEMA Premium® operational efficiencies as standard or NEMA Premium PLUS efficiencies. For rugged and efficient operating performance – you can depend on Siemens. To Learn more, click HERE.  18

An AC drive is a device used to control the speed of an electrical motor in order to: 

• Enhance process control 
• Reduce energy usage and generate energy efficiently
• Decrease mechanical stress on motor control applications
• Optimize the operation of various applications relying on electric motors

Drives can also be utilized to convert energy from natural and renewable resources like the sun, wind or tides, and transmit it to the electrical network or use it for local consumption. In hybrid technologies, AC drives are used to combine conventional energy sources and energy storages to create total energy management solutions.
AC drives are also known by various other names such as adjustable speed drives, adjustable frequency drives, variable frequency drives, variable speed drives, frequency converters, inverters and power converters.

Did you know?

• Emerging economies are driving the increase in energy consumption
• 20% of the world’s energy consumption is electrical energy
• 40% of electrical energy is used by electrical motors
• 75% of AC drives are used on pumps and fans
• Global electrical energy consumption could be reduced by 10% if AC drives were used in every suitable application

Contact our Danfoss factory trained team can help you analyze your processes and help you determine the right drive. To learn more about Danfoss, click here.