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How to install AEGIS Rings with Conductive Epoxy – Only 4 minutes long!

This video shows everything you need to install  AEGIS Shaft Grounding Rings with conductive epoxy.

  1.  List of tools and supplied needed
  2.  Personal Protective Equipment
  3.  Where to install – DE (all motors) and NDE (TEFC motors)
  4.  Removing the paint from the motors end bracket
  5.  Clean the motor’s shaft to bare metal where the AEGIS Ring fibers touch.
  6.  Apply AEGIS Colloidal Silver Shaft Coating (CS015) to the motor’s shaft.
  7.  Use only AEGIS Conductive Epoxy – (EP2400) – Tested and proven
  8.  Mix even amounts of the EP2400 thoroughly – MIX WELL
  9.  Apply the mixed epoxy to the metal back of the AEGIS Ring
  10.  Install the AEGIS Ring to the motor’s end bracket – metal to metal contact!
  11.  Make sure the AEGIS ring is centered around the shaft – look for even gap all around the ring near the shaft.
  12. Use Heat gun to cure the EP2400 conductive epoxy – approximately 5 minutes – cures in about 30 minutes!
Remove Paint for Clean Metal Surface to mount the AEGIS Ring

Remove paint for a clean metal surface

AEGIS CS015 and AEGIS EP2400

AEGIS CS015 and AEGIS EP2400

Clean Shaft and Apply CS015

Clean the shaft and apply CS015

Quickly dry the CS015 with a heatgun

Quickly dry the CS015 with a heatgun

AEGIS Conductive Epoxy EP2400

AEGIS Conductive Epoxy
EP2400

 

 

AEGIS Ring installed with Conductive Epoxy (EP2400)

AEGIS Ring installed with Conductive Epoxy (EP2400)

aegis_sgr-grp-2016The “Greening” of America’s Buildings:  The growing “green” movement has led to a flood of new standards including the US Greens Building Councils Building Performance Initiative, the Green Building Initiative, and LEED — all aimed at increasing energy efficiency and sustainability. Challenged to reduce energy consumption and to document savings, America’s facilities managers are installing variable frequency drives (VFDs) in HVAC systems as one of the best ways of achieving such savings.

mechanical-room-hvac

The Promise of VFDs:  VFDs reduce energy consumption by allowing motors to run less than full speed. When used to control air conditioning, air handling,
or pump motors, VFDs can yield energy savings of 20 ~ 30% or more by allowing motors to run at reduced speeds to compensate for changes in load.

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The Need for Shaft Grounding on VFD-Driven Motors:  But, VFDs can damage the motors they control. They induce currents on motor shafts that discharge through the bearings, causing pitting, fluting, and catastrophic motor failure. Without bearing protection, any savings from the use of VFDs can be
quickly wiped out by the cost of replacing motors and by system downtime. To make HVAC systems sustainable as well as energy efficient, a reliable method of bearing protection is required.
Proven, Long-Term Bearing Protection:  By diverting bearing currents safely to ground, AEGIS® SGR Shaft Grounding Rings ensure the reliable, long-term operation of VFD driven motor systems, locking in energy savings and making these systems truly sustainable and truly green.

Select Motors with Factory Installed AEGIS from Baldor, WEG, Regal, TECO, Leeson and more

Select Motors with Factory Installed AEGIS from Baldor, WEG, Regal, TECO, Leeson and more

A highly resistive glaze may form on brush surface, requiring periodic cleaning. This is sometimes also called a “patena” film and forms a visible black non-conductive band on the shaft. it is also one of the disadvantages of using a carbon block brush for shaft grounding.  Renders the carbon block brush ineffective.

Carbon Block Brush causes Non-Conductive Coating on Motor Shaft "patena film"

Carbon Block Brush causes Non-Conductive Coating on Motor Shaft “patena film”

What to do? Clean the shaft where the carbon block brush contacts the shaft and install the AEGIS Shaft Grounding Ring in its place.