Case Studies and Stories
Energized Motor Testing Reveals Improper VFD Settings
This 55-kilowatt, 400-volt motor is controlled by a variable frequency drive (VFD). This motor drives the centrifugal fan that sends air into a natural gas combustion burner...
- Ettore Di Pasquale
- ALL-TEST PRO
Case Studies and Stories
What is 3 Minutes of Motor Testing Worth to You?
A motor distributor in the Netherlands provided a 17 Kilowatt, 400-Volt motor to a local hospital in 2015. The hospital rented a portable crane to install the motor onto the roof of the building. The motor is used to operate a fan that is mounted on the hospital’s roof...
- Richard Scott
- ALL-TEST PRO
Case Studies and Stories
Deep Well Vertical Pump Analysis using Electrical Signature Analysis (ESA)
There are many advantages that vertical pumps provide over horizontally mounted pumps and when they operate properly they generally provide many years of reliable, maintenance free operation. However, in almost any plant with a large inventory of vertical pumps they will have one or more of these pumps that are considered “bad actors”...
Two Minute Tips
Karl Fischer Test
Water can seriously damage the lubricating properties of oil and promote component corrosion...
Two Minute Tips
Two Minute Tips
Analytical Ferrography
Analytical ferrography is an extremely valuable tool for examining wear particles...
Five Minute Facts
Introduction to Elemental Spectroscopy
Elemental spectroscopy measures in-service fluid samples for wear metals, additives, and contaminants...
Case Studies and Stories
Analytical Ferrography Forensics
A steel mill uses this pump to boost the water pressure it supplies to the hot mill for descaling. Thin scale forms rapidly on the hot slab and must be removed before entering the mill stands...
Case Studies and Stories
Analytical Ferrography Forensics II
A steel mill uses this motor to drive a double reduction gearbox on a roughing mill at an input speed of 450 rpm. The motor has babbitt sleeve bearings...
