FAN and BLOWER REPAIR Services

 Electromechanex is highly skilled in the repairing, rebuilding, modifying and retrofitting of   existing fan equipment. We take the performance criteria from the existing system to produce   a fan that meets or exceeds the dimensional and performance requirements of the customer.   Fan assemblies can be quickly tested in the field or at our repair facility for a quick diagnosis of   air, sound and vibration problems. As with all repair services, Electromechanex offers turnkey   service including; removal, repair, installation, laser-alignment, and machine start-up testing.

1.0 Dismantle & Inspection

A thorough appraisal of the Fan and Blowers condition, as received, is to be performed, to determine what specific repairs are needed as well as to find unsuspected trouble, perhaps unrelated to the obvious defect. Our technicians diagnose cause and effect to help prevent a recurrence. Our appraisal will include a complete review of the following conditions of each part of the Fan and Blower: General cleanliness, Cracked or broken welds or castings, Missing hardware, Wear or rub marks, including fretting, discoloration, charring, or other evidence of overheating, Looseness at mating fits, Corrosion, moisture, or oil inside the machine. 

2.0 Die Penetrant Test

With a fan running at such a high speed, a die penetrant test uses a die, sprayed on the fan blades to detect a crack. Our team can either repair or recommend the equipment be removed from operation due to safety issues. Repairs can be made, both in the Shop and in the Field.

3.0 Shaft Repair

By working with our machine shop to manufacture or repair a shaft used in a fan or blower, customers experience a cost savings since this is more affordable than purchasing from a factory. In many cases, we prefer to machine the parts ourselves using our In-House Machine Shop. Many fan parts such as shafts and seal sleeves, as well as bearing housings can be sleeved and finish machined in our own machine shop. Additionally some worn fan parts can be coated with a polymer composite that can be easily machined in a lathe, drilled, tapped, filed, sanded and polished. This gives us ultimate control over the timeframe and finished quality of these fan components.

4.0 Frame, Housing Inspection & Repair

Fan Frame and Housing inspections focus on identifying structural damage, such as cracks, corrosion, or contamination, which can lead to overheating or mechanical failure. Key checks include inspecting for wear on bearing fits, and verifying that the Fan is clean, dry, and securely mounted. Cracked equipment causes vibration that leads to inefficient and unsafe operations. With a thorough inspection, Our technicians can detect issues and bring equipment back to its original specifications.

5.0 Fan and Blade Balancing

By reducing the vibration, fan and blade balancing extends the life of your equipment. EMX’ Balancing Systems are designed to perform measurements of vibrations and calculations within horizontal shop balancing machines, and in the field. The fan and blade shall be Dynamically Balanced in a balance stand before assembly of the unit.

Fan Wheels are supported at the bearing position. Ref EASA AR 100 Dynamic balancing of the rotating element should be to the level specified by the customer. In the absence of a requested level, dynamic balancing to balance quality grade G2.5 (ISO 1940/1) should enable the machine to meet final vibration limits.

6.0 Assembly

All Fan and Blower assemblies are made in accordance with the equipment technical manual and good machine shop practices. All mechanical repairs on shafts, bearing journals, end bells, and other equipment are handled in-house by experienced machinists. Fans & Blowers will be assembled in a manner that will ensure proper fit and alignment. The assembly of the Fan is the reverse of the disassembly process and all match marks shall line up. All assembled components will be checked to ensure secure fits. Bearings packed with BMG Gen 2 Polyurea Motor Grease.

7.0 Final Testing

The best way to reduce risk while commissioning an industrial fan or blower is to test it thoroughly before it ships. We test each fan assembly in-house in our testing facility. We can perform basic functionality tests as well as fan performance and testing. A full Mechanical run performed to ensure the mechanical integrity of the unit. This includes maintaining acceptable bearing temperature, vibration levels and no leakage from the seals or gaskets. With the use Fluke VibexpertII Vibration Analyzer, VibePro 7.3.5 and Omnitrend Software,  allowing EMX to determine the severity of the stress level of bearing, shaft or housing on the equipment. The data is recorded from the machine and uploaded on the software, providing recognition of change in the vibration pattern, as an indicator of defects. The duration of the test is only long enough to verify that the fan or blower will operate satisfactorily in the field and the bearing temperatures have stabilized.

8.0 Paint & Protection

At the completion of the test, the Fan and Blower assembly shall be painted, unless otherwise requested by the customer, with two coats of EM Machinery Gray paint or Customer preferred paint color or type, application-specific paint, such as Food grade epoxy, IP67 epoxy Marine epoxy. Fan & Blower products are cleaned and free of any dirt, oil or grease on the primed surface prior to finish painting. Film thickness: 2 to 4 mils. The shaft shall be protected by either a rust and corrosion preventing coating or mechanical impact cover, and prepared for shipment.