SPORTS QUIZ

Wharton Corporate Center1 Harry Shupe Blvd., Wharton, NJ 07885

973-537-0400

How you can contact Longo...

Linden Servicenter1625 Pennsylvania Ave.

Linden, NJ 07036Tel: 908-925-2900908-925-9427 Fax

New York Servicenter829 East 144th St.Bronx, NY 10454Tel: 718-585-5330718-585-5337 Fax

Philadelphia Servicenter1400 F Adams Rd.

Bensalem, PA 19020Tel: 215-638-1333215-638-1366 Fax

1 HARRY SHUPE BLVDWHARTON, NEW JERSEY 07885

Service Through KnowledgeService Through KnowledgeTMTM

Joseph M. LongoPresident

The Largest Independent Electrical-Mechanical Sales and Service Company in the Northeast

VOLUME 5 ISSUE 3 OVER 65 YEARS FALL 2014

Visit our website www.elongo.com

orsend us an e-mail atinfo@elongo.com

1.c, 2.d, 3.d, 4.d, 5.b

For years, we off ered seminars to our customers on a variety of sub-jects from the basics of electricity to understanding pump curves. We would have anywhere between 25 and 40 attendees depending on the subject and of course the time of year. Th e day would start with coff ee and rolls as the various people met and talked, networking (before the name), lunch and then a solid Q&A session. Not only did the presenter answer a lot of the ques-tions, but people in the room began to off er up their own examples of similar situations. As you can read in this issue these formal seminars have evolved into “Lunch and Learns”.

Th e idea was to provide information because our tag line “Service through Knowledge” meant the more you, our customers, under-stood your equipment and what it takes to maintain it, the better off you would be. Our job is to make sure we are continuing to keep up with the best practices and latest technology so that we are able to convey the knowledge in a practical and effi cient manner.

Today learning is a luxury, an expense and oft en in-convenient. Although Longo has a wealth of talent and experience in house, technology continues to improve. So before we can provide you with knowledgeable answers to your problems we better know what we are talking about.

To do this we try to take advantage of manu-facturers’ training sessions, whether it is on gearboxes, pumps, air compressors, etc. More oft en than not our people learn not only the specifi cs of the equipment, but even some “tricks of the trade” when it comes to tear downs and repairs.

Another aspect is certifi ed training. Many engineering fi rms and other third party approval companies, who act as clear-ing houses for bids and projects, require more than a resume of projects to be considered for a specifi c job...you need a pedigree.

For example Longo has become NETA certifi ed. Th e Inter-National Electrical Testing Association (NETA) is an orga-nization that serves the electrical testing industry by off ering accreditation of third-party electrical testing fi rms, certifying electrical testing technicians, as well as testing procedures and evaluation criteria.

Th ese are not CE classes where you work your phone, have a coff ee break and walk out with a certifi cate. NETA Certifi ed Technicians have earned a Level II, III or IV NETA Certifi ca-tion in electrical power systems testing and bring the knowl-

edge and fi eld experience necessary to perform testing to industry standards. A NETA Technician’s work

experience, education, and training keeps them current with new technologies and provides them the knowledge to perform testing across a wide variety of power systems, insuring that the work is executed with the highest degree of safety.

So learning and building a knowledge base is really vital in this business.

www.elongo.com

We have been updating our website, so stop on by and see what is new and interest-ing!

THELONGO LETTER

1. Who was the fi rst New York Met to win 25 games in a season? a. Dwight Gooden b.David Cone c.Tom Seaver d.Frank Viola

2. Who was the fi rst Boston Red Sox franchise pitcher to strikeout 2000 batters in a Boston uniform? a.Pedro Martinez b. Jim Lonborg c. Cy Young d. Roger Clemens

3. 17-time all-star Pete Rose played for 3 teams in his career. Which of the following was not one of them? a. Cincinnati Reds b.Montreal Expos c. Philadelphia Phillies d. Los Angeles Dodgers

4. 10-time all-star Rickey Henderson played 3081 games with nine diff erent major league clubs, including all of the following except whom? a. Toronto Blue Jays b. New York Mets c. Boston Red Soxd. d. Texas Rangers

5. A Chiefs receiver takes off downfi eld on a pass play. Ten yards beyond the line of scrimmage, he is hit by a Ravens linebacker and knocked to the ground. Th e quarterback, scrambling to elude the rush, hasn’t thrown the ball yet. Th e back judge sees the play and throws a fl ag. What penalty should he call?* a. Pass interference b. Illegal contact c. Defensive holding d.Unnecessary roughness

*Pre-new defense rules

Back in the 90’s training was a whole different ball game. Paying $1000-$2000 for a course and fl ying to a two or three day seminar in Chicago or Dallas was standard procedure. Nice hotels, good contacts (networking was yet to come), socializing and picking up some valuable information. Then things changed, namely the economy, and those types of training events pretty much disappeared for the average company.

I think everyone agrees that either refreshing the basics or learning the latest techniques is important for you and your company. However, training in our industry has become a bit of a nightmare for those con-ducting the courses and those trying to learn.

At Longo we ran local training seminars at our Wharton location on subjects from basic motor knowledge, pumps to VFDs and more. We would invite a broad range of attendees from mechanics to executives from our customers’ companies. Maybe some of you attended. In house people and industry professionals provided hard info to use on the job, a free lunch and out the door by 2:30 PM. But, it became harder for many to take a whole day away from work so we upped the ante. The Battle-ship NJ became the classroom and we had a boost in attendance, but even that began to wane.

Today, webinars have become the norm. As a part of the work through lunch mentality, most cannot or choose not to leave their desk, much less their offi ce or plant, so the seminars have to reach you where you are. As a result, today it is you, your monitor or tablet and a demonstrator streaming on your screen while you are having a sandwich.

At Longo we still feel the human interaction is important and now make ourselves available to our customers for Lunch & Learn talks. With 5, 6 or 12 company people and Longo representatives at your facility we cover a lot of ground in a variety of areas. Generalities turn into spe-cifi c problems and their solutions. We get to know your situations and you get to know Longo and our level of competence. And...we bring lunch! To schedule a L&L e-mail info@elongo.com and put L&L in the subject line.

Dallas Training Session 1995 Hello...

Drones, or more accurately UAV(Unmanned Aerial Vehicles), are having an amazing transformation. From killing the enemy in the desert to seeing what your sunbathing neighbor is up to in less than a year is quite the trip.

Each time there is an announcement, such as Ama-zon delivering same day by drone, the real world is ten steps ahead. Checking pipe and power lines, solar and wind farms via UAVs is a great use, unless you are one of the crews that do the inspections now. From the cameras on the street corners to the explosion of private UAV’s, the government will have to get in line for a crack at observing us!

Th e next big use of UAV’s will be (or maybe already is) sports. Not watching them, but competing. “Th e World Cup of UAVs” both singles and teams. Singles would get points for the best videos in a 30 minute segment with judges awarding points like ice skating. Th e team version goes back to the drones roots with armament and size restrictions. Picture some space battle from a 60’s movie but without any strings attached. Th e National Drone League or more likely some sort of NASCAR type organiza-tion, National Association of Drone Competition and Performance (NADCAP). Skeet shooting with UAVs will be a lot more challenging! Th e entire hunting industry will take a hit. No more cammo outfi ts or boots..or even rifl es. Just sit on the cabin porch and send out the UAV to fi nd that turkey or deer.

And video games vs. real UAV games? Probably the ultimate blend of fantasy and reality! While the actual business of UAV’s is exploding the supporting industries will be quick to follow. Soon WalMart will be advertising UAV protection for windows that have a fl owing digital screen that scrambles any video signal. Keeping with the insect theme...UAV Zappers. Like bug zappers these use lasers to zap or disable UAVs within 100 feet!

Literally the only limit on this industry is your imagination.

Service Through Knowledge

fall 14.indd 1fall 14.indd 1 8/18/2014 1:38:27 PM8/18/2014 1:38:27 PM

In this situation the rotor had been damaged so there was no need to worry about heat further damaging the windings, etc. Th e shaft was wrapped with insulation mats of polycrystalline mullite fi bers, making it an extremely lightweight, highly resilient insulator and liquid nitrogren was pumped around the shaft , both top and bottom. Although the liquid nitrogen could not get right to the area in the rotor where the shaft makes contact, the cold did migrate from open ends to mid shaft points. Aft er a little less than an hour it was time heat up the rotor enough to expand and free the shaft .

Four technicians with acetylene torches went medieval on the rotor starting on the outside and then shooting their torches down inside the rotor as well. Not only do the technicians have to pay attention to what they are heating, they need to be aware of what the other three are doing as well. Caution and safety with four torches in an eight foot diameter is vital.

What you have is a closing window where the rotor is heating up as well as the shaft . If it takes too long to heat the rotor, the shaft will warm, re-expand and not come out. Th e shaft /rotor unit is held up by our shop crane attached to the end of the shaft . Th is creates enough tension so that the instant the temperature diff erential reaches the right point the shaft will move up and then be quickly pulled out of the rotor.

When the shaft was removed from the rotor, the bottom of it was just 65 degrees while the rotor body was around 300+ degrees. Just simple physics.

In our last issue we talked about installing a shaft into a rotor with an interference fi t. Removing a shaft from a rotor is basically the same thing in reverse, with a few changes. First thing is that the shaft cannot be completely encased in liquid nitrogren to reduce its diameter. And the rotor shaft combination, on these large units, will not fi t into our bake oven, And based on these circumstances the similar job was accomplished in two diff erent ways.

Part OneTh is particular operation was diff erent because we wanted to ensure that the rotor was not damaged during the heating process, since it was going to be reused. Instead of the more violent and extreme heat of the torches, induction heating coils were installed. Th is time the exterior of the rotor was wrapped with the fi ber insulation and then strategically placed heating coils were placed around the exterior of the rotor. A complex wiring loom was set up from the power source to the coils. Th is would enable the amount of heat and the speed applied to the outside of the rotor to be more controlled.

As the fi nal connections to heating elements were being wired the shaft was once again cooled down with liquid nitrogen. Th e shaft was wrapped with insulating mats, top and bottom, to retain as much cooling eff ect as possible, and again the shaft was given suffi cient time to chill before the heating coils were powered up. Th e wire, in bundles and individual strands had a vague “Griswold Christmas” look to it.

Due to the extreme mass of the rotor the heating and expansion was done in two stages to protect the windings. Th e initial stage was heating the exterior to approximately 100 degrees C. Once there, torches were applied to the inner part of the rotor since it would be too long and slow for the heat from the coils alone to penetrate to the core of the rotor.

Technicians continuously monitored both shaft and rotor tem-peratures as the torches brought the hub up to the critical tem-perature.Even though that temperature window is there you can never be sure just what is going on down inside where the shaft and rotor are in contact.

A very satisfying “Th unk” and the shaft is free. It is quickly pulled up, out and away from the area to return to room temperature.

Part TwoTh is same rotor that gave up its shaft so nicely is going to receive another shaft before it cools down. Two torches more calmly bathe the core area with heat to maintain it’s expanded state. While this is going on the new shaft has been in a full length cardboard tube with liquid nitrogen being pumped into the tube. Once the old shaft is out of the way the technicians quickly change over to installation mode. Th e new shaft is extracted from chilling tube and moved into position over the hot rotor.

Four technicians hover over the hot rotor while guiding the shaft into the opening. Cautious at fi rst to be sure it is centered and then once the okay is given the shaft slides quickly and com-pletely into the rotor. It will be 18-24 hours until the rotor/shaft combination cools down enough to be tested ensuring the rotor elements were ok. When it was fi nally tested all was good to go.

Two ways to peel a shaft

Th e above valve came to us from one of our customers who handles a sub-stantial amount of sewage and waste water. Th e valve itself is 8.5 feet in di-ameter and is designed to hold back a signifi cant weight of water. Th e valve is secured in place with 52 bolts, each 2.25” in diameter. While the valve looked a lot worse for wear when it arrived (left ) its main problem was silt/sand that had worked its way into the bottom of the opening over 40 years and ruined the sealing gasket. Th e design of the valve is not especially in-novative, but its materials, manufacture and assembly were very well done.

Refurbishing began with a thorough cleaning and descaling. Once cleaned, a ceramic epoxy was applied to the working surfaces of the valve. Th ese compounds come in various viscosities from putty-like to paint and have

extremely tough corrosion resistant properties. Some have been developed for the marine industry where cavitation is severe

and can literally destroy rudders.

Once that was completed the new gasket was installed, the mecha-nism and the motor that drives the valve were checked and found to be satisfactory.

Freezing the shaft , whether to remove it or install, and heating the rotor to expand it

to receive or remove the shaft .

Timing is much more critical installing the shaft because there is a specifi c window of temperatures that will allow the shaft to go in. Misalignment or any other pause or hesitation can allow the shaft /rotor temperatures to reverse and can lock the shaft instead of having it smoothly run down into the rotor.

fall 14.indd 2fall 14.indd 2 8/18/2014 1:39:44 PM8/18/2014 1:39:44 PM