Glacier partners with SternVent company for wood dust applications.

Sternvent-logo1Glacier Technology recently agreed to represent Sternvent for the Minnesota territory Western Wisconsin territory.

CYD3015Adams1Sternvent was founded in 1952, they are a family owned business located in Union New Jersey.  Sternvent manufacturers both cyclones and vibraclean dust collectors and they are often the basis of design as specified by consulting engineers.  Sternvent provides up-to-date IMC and NFPA compliance information to the engineering community.

Sternvent is an ideal solution for school woodshops using cyclones with after-shakers.  Product cfm ranges from 500-12,000 cfm.

 

2016 Glacier Golf Outing

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Glacier Technology’s hallowed golf tournament brought out a few new faces along with many returning seasoned veterans for this intense competition. Unfortunately, the increased competition didn’t keep Chris Hanson and his team of ringers from running away with yet another championship (that’s 5 for Chris, but who’s counting?). Chris lead off with a rocket shot straight into the pond (the ball’s velocity might have damaged the pond’s bottom lining); fortunately, Danny Johnson, a first year participant, carried the team with Lawrence Graham adding his British touch for more pars than bogies.

Scott Clausen’s team was just warming up and hitting more pars and birdies as the team roared through the last few holes…….unfortunately, they had to play the first few holes which put them in a deep hole!

Minimal course damage was done as the players repaired every divot and broken tee marker as course owner Rick Deitzel played for the first time on this tournament. Rick had a note pad with him marking down which trees he was going to cut down to make sure his ball’s flight wasn’t impeded by any pesky branches.

Last year’s big money winner, Dan Woodbury, came home with nothing but the loose change in his pocket….better luck next year.

Veteran player Brian Gordon is petitioning the selection committee to move the venue from golf to ice fishing………not happening!

As always, the day ended with a lot of laughs and an unbelievable barbeque by Chefs Jon & Heather Terry. The meal was not only fantastic, it came in under budget and on time.

Next year will hopefully include a victory for Scott Clausen and his good friend Pat Spence so they can finally get their names on the trophy!

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Glacier partners with Imperial Systems Dust Collection

cmaxx_2Glacier Technology recently agreed to represent Imperial Systems in Minnesota, Wisconsin, North Dakota, and South Dakota.

Imperial Systems  was founded in 2000 as an industrial dust collector manufacturer; Headquartered in Jackson Center Pa just north of Pittsburgh.  Imperial designs and manufactures industrial duty dust collectors.  The standard cartridge filters are rated at Merv 15 and are installed on a track for ease of change out.  The CMAXX Dust Collector System has 10% more filter media than other same-sized vertical cartridge collectors. The internal area of the CMAXX dust collector system offers 20% more area around the cartridge filters causing more dust to drop in the hopper before attaching to the filters.

cmaxxIDA (In-Line Deflagration Arrester)
The CMAXX along with the proprietary IDA the DeltaMaxx filters, has been proven to isolate a deflagration and stop a flame front.

Today, Imperial Systems is proud to be an industry-leading dust collection manufacturer with a clear advantage when collecting dust classified in the explosive category (KST value of 1 or more).

Imperial Systems offers a complete line of bag houses and cyclones for applications that may require different filtration technologies. They are committed to insuring your success as our customer, and we welcome the opportunity to build a successful business relationship with you. To learn more about Imperial System, contact us today.

 

Glacier partners with AirPro Fan and Blower Company

airproGlacier Technology recently agreed to represent AirPro Fan and Blower Company in Minnesota, Wisconsin, North Dakota, and South Dakota.

AirPro Fan & Blower Company was founded in 2002 as an industrial fan and blower manufacturer. Headquartered in Rhinelander, Wisconsin.  AirPro designs and manufactures industrial duty centrifugal fans and blowers to move process and material-laden air. Their industrial fans and blowers, both pre-engineered and custom, include backward inclined fans, backward curved fans, radial tipped fans, material handling fans, high pressure blowers, and other centrifugal fans & blowers.

Today, AirPro is proud to be an industry-leading fan and blower manufacturer offering a complete line of air handling products and accessories. AirPro offers premier quality industrial centrifugal fans and blowers with premier customer service. They are committed to insuring your success as our customer, and we welcome the opportunity to build a successful business relationship with you. To learn more about AirPro, an industrial fan manufacturer, contact us today.

Cincinnati Fan Acquires Daniels Fans

custom-fan-fuel-cell-installation

Fan for a fuel cell installation. Maximum temperature was 1400°F / 760°C. Mechanical seal and housing designed for a pressure of 73 psi / 5 bar.

Cincinnati Fan and Ventilator Company, Inc., recently purchased Daniels Fans, adding Daniels’ specialized line of high temperature fans to Cincinnati’s already-impressive selection of industrial fans and blowers. As Glacier Technology is a manufacturers rep for both Cincinnati Fan and Daniels Fans, we look forward to supplying our customers with more high quality, high performance fans, blowers, and related equipment from these two industry leaders.

Daniels Fans delivers proven solutions for thermal process applications. Features of their high temperature industrial fans include:

  • Air cooled shafts up to 2200°F – no water cooling required
  • Volumes up to 440,000 CFM
  • Operating pressures up to 80” WG at 70°F (2,000 mm WG)
  • Wheel diameters up to 102” (2,600 mm)
reversible-axial-flow-plug-unit

Reversible axial flow plug unit (1200°F / 650°C)

Cincinnati Fan specializes in cast aluminum and fabricated aluminum, steel, and stainless steel industrial fans. Since 1956, they have been designing and manufacturing top quality centrifugal blowers, axial fans, cooling fans, dust collectors, and more. Cincinnati Fan’s reliable, heavy duty fans and blowers are available with 1/4 HP up to 125 HP motors to meet the needs of any industry or application.

 

 

Camfil APC buys German Handte company that specializes in oil mist and fume collection

Camfil Mist Collector

The oil mist separator for extremely efficient
separation of ultra-fine aerosols and fumes.
Modular, flexible – for efficient extraction in
high-performance machining with cooling lubricants

The Handte Oil Expert offers:

  • Economically efficient separation of ultra-fine CL aerosols & fumes
  • Puncture-proof filtration with guaranteed highest and constant
  • degrees of separation of 99.97% acc. to test standard DIN EN 1822
  • Optional clean air recirculation
  • Long lifetime of the filter stages
  • More efficient than conventional systems
  • Suitable for continuous 3-shift operation
  • Air flow can be adjusted without affecting the degree of separation
  • Operator-friendly thanks to practically maintenance-free unit design
  • Service-friendly thanks to tool-free filter change with quick-acting clamp
  • Plug-and-play delivery

Continue Reading specifications and applications:

“Christmas in July” Golf Outing

Skirt Photo 1Glacier Technology’s hallowed “Christmas in July” golf outing grew to 7 teams this year. However, the increased competition didn’t keep Scott “Ice” Clausen from having images of accepting the winner’s trophy dancing around in his head. And always true to his word, Ice made a grand entrance to the tourney this year decked out in a skirt in honor of the thrashing he received last year from Bree Hanson (and to keep his team loose).

Just like last year, the competition was extremely close. The winning team, anchored by Matt Witter came in at 3 under par with his teammates Val Clausen, her dad Mike Stone and local ringer Chris Hanson rounding out the group. Mike Stone, who has been battling cancer for about 7 months put on a show of determination and skill and came through at the critical moments… very impressive!

The Winners

A surprising discovery was made after the awards were handed out……it seems Ice Clausen’s wife Val has been in the winning circle 3 out of the 5 years. Unfortunately Ice hasn’t made that victory lap yet. And while Ice pulled out all stops this year, and even with the sound advice he got from last year’s tournament champ Bree Hanson …it didn’t help. Maybe the skirt impeded his backswing or follow through somehow?

Skirt Photo 2

A few other notable items included celebrating Advantage Marketing (Craig Talbert) 30 year anniversary of being in business. Way to go Craig! Here’s to 30 more!

And after the grueling 9 hole competition, all participants enjoyed a feast held at Ice and Val Clausen’s house with world class barbeque Chef Jon Terry at the helm of the barbeque.

Next year the group will grow to 8 teams with another fresh chance for the skirt-wielding Ice Clausen. He can only help his luck improves…

Golf Ball

Group Photo

Detection of Electrical Discharges in Bearings

Overview

Since the 1990′s, the use of Variable Frequency Drives (VFDs) in industry has increased dramatically, mainly for reducing electricity costs. Manufacturers have contributed to this development by making VFDs better and more affordable by introducing Pulse Width Modulated (PWM) drive types. But along with this cutting edge technology, mor premature bearing failures have occurred, and consequently more and more electric motors fail prematurely. Electrical erosion is the cause of these premature failures.

A dismounted bearing will show evidence of electrical erosion: grease is affected as much as the bearing components. To date, using an oscilloscope together with a contact probe on a rotating shaft could help diagnosing electrical erosion, but it is impractical, expensive and time-consuming. A new unique technology from SKF may help performing such a diagnosis, quicker and remotely. Preventive maintenance on the motors suffering electrical erosion can be planned instead of being done too late. SKF offers a solution to easily detect the early symptoms of electrical erosion.

Introduction

Along with the trend in using VFDs to control electrical motors in the last decade an increasing problem hit the industry: electrical arcing inside electric motor bearings, an old known phenomenon due to low frequency currents, but now with different origins and characteristics.

The electrical discharges taking place inside the bearings are harmful to the rolling elements, their raceways and even the lubricant. Later stage symptoms such as fluting, putting, burnt grease and vibrations are all consequences of electrical erosion and can therefore be detected at advanced stages of damage, with the help of stethoscopes, vibrations analysis and grease testing. But when it comes to early detection of the problem, the only solution has been connecting an oscilloscope to the motor and checking for anomalies in the motor currents. This requires high cost equipment, special contact proves, specialist knowledge and considerable time.

Today, the phenomenon is better known; it can be identified, tracked and solved. A major challenge has been the early diagnosis of the phenomenon. This is because many parameters influence the electrical erosion: voltage, load, speed or lubricant type. A need arose for a quick solution to detect if electrical discharge currents are occurring in bears, as they can eventually lead to electrical erosion. The answer is the SKF Electrical Discharge Detect Pen (EDD Pen); a handheld instrument that detects electrical discharges safely and remote.

Electrical Erosion

With the use of AC motors (Asynchronous Motor), it had been noticed that some currents can pass through rolling bearings. This can be due to rotor eccentricities, rotor asymmetries, uneven air gaps, unbalanced windings or even poor electrical steel homogeneity. These low frequency currents were the first to be identified as a cause of bearing damages.

The major breakthrough in electrical motor control came with the introduction of variable frequency drives using Pulse Width Modulated (PWM) principles, basically a modulation of the cycle of the power source, using the Insulated Gate Bipolar Transistors (IGBT) patented by Toshiba. This method of power conversion was new to the market.

Principle of Power Conversion

Although a good concept, there was a drawback in using VFDs: the high frequency currents (kHz), circulating or shaft grounding, coming from the “common mode voltage”; and some capacitive discharge currents coming from the high rate rise of voltage (dv/dt) (also known as “steep edged voltage pulses”) and the high switching frequencies, also coming from the common mode voltage indirectly.

High Frequency circulating current in a motor

The combination of high frequency and capacitive discharge currents is problematic, as it induces shaft voltages and bearing currents. The voltage increases to a certain value where it discharges to ground, usually through the bearings as they are the path of least resistance. The lubricant film in the bearing is a major barrier to cross, and when a threshold voltage occurs that is strong enough the overcome the lubricant film thickness, then a discharge occurs. Then the voltage charges up again, like a capacitor would do. It is the same set-up as used in electrical discharge machining (EDM), but in motors this is not controlled and leads to “electrical erosion”.

Details on the generation of high frequency circulating currents

To explain the origin of high frequency circulating currents, we have to understand the difference between a good sine wave supply that we get directly from the mains and the output from a VFD. For instance the input will have a sum of its three phases voltage equal to zero, while the sum of all output phase coltages from a common mode voltage is not equal to zero.

This non-zero situation creates a current asymmetry between teh three phases in the stator winding, therefore creating a high frequency flux variation that surrounds the shaft. Consequently a high frequency shaft voltage is created. These conditions make it possible for the current to flow from one bearing to the other bearing, axially.

Input and Output

How has electrical erosion been detected in the past?

All electrical motor bearings can potentially suffer from electrical erosion. Unfortunately, problems can start after just a few months of running a new electric motor. Frequent basic condition monitoring must be performed on the machinery by a maintenance team to diagnose electrical erosion.

Today, the only way to detect electrical erosion before failure occurs is to use an oscilloscope connected to the motor and a special probe to pick up the current from a rotating shaft. In addition, the oscilloscope must be set to the parameters where the peaks can actually be detected, normally a short time frame. This fine tuning requires a good knowledge of the equipment and the instrumentation.

The image below shows a typical oscilloscope trace of the situation where electrical discharge is occurring: the peaks corresponding to every single spark occurring inside the bearings.

Oscilloscope Trace

Damage caused by electrical erosion

Electrical erosion leads to bearing damage and consequently premature bearing failure.

The first stage of damage is not visible to the naked eye: micro craters due to the electrical discharge machining current phenomenon. As shown below, what happens is similar to spot welding; a local melting of the material. However when this occurs thousands of times, micro cratering occurs. The sparks create many small craters by removing material from the rolling elements of the raceways. First it causes the rolling elements of raceway to melt. Secondly, due to the heat produced by the current discharge, the matecrial vaporizes, and the remaining particles are washed away.

Micro Craters

At another scale, just like the micro craters, sometimes bigger craters cna be seen with the naked eye. This is called electric pitting, mainly occurring on DC motors.

The second stage of damage is directly related to micro cratering, this is known as fluting. The pattern of fluting is a series of parallel grey segments along the raceways. These patterns can be seen below. These patterns appear because of the mechanical stress caused by the rolling elements rolling over the micro craters. Over time mechanical resonance vibration occurs and the grey marks appear. When fluting is present, this is a critical stage for the motors. Vibration analysis when done at this advanced stage of damage generally indicates that the bearing must be replaced very soon.

Finally electrical erosion can cause lubricant decomposition and degradation. Blackened grease is a common sign of advanced electrical erosion as high temperature peaks locally cause the thickener, base oil and additives to react.

Fluting
Blackened Grease

What solution is available today to detect electrical discharges?

When running in normal conditions, a thing lubricant film separates the rolling elements from the rings. As seen above, the lubricant film acts like a capacitor. Every time this capacitor discharges, high frequency current pass through the bearings. These fast changing currents generate fast changing magnetic fields, locally, around the bearing as shown below. SKF set to find a way to isolate the frequency band where these magnetic changes take place and to develop a special antenna that could detect them.

The culmination of this research was a new instrument; the SKF Electrical Discharge Detector Pen (EDD Pen). This isntrument detects every change of the magnetic field, locally, and counts these changes. These changes reflect the occurrence of every single discharge happening in the bearings. The EDD Pen can help the user diagnose electrical discharge occurrences at an early stage that can potentially result in electrical erosion. Before the signs of bearing damage are evident, electrical discharges can be detected.

Current Flow

Of course with time if no action is taken, all the other symptoms will appear, fluting will cause more and more vibrations and noise; blackened grease will cause an inadequate lubrication, until bearing failure results.

Prevention against electrical erosion

Once electrical erosion is diagnosed, whether it comes from the high or low frequency currents, several actions can be taken before bearing damage results, be means such as:

  • Using insulated bearings like SKF INSOCOAT bearings, for either both bearings or just non-drive end bearing (NDE) to open the low frequency current circulating circuit.
  • In some applications with modern drives, insulated bearings may not always solve the problems. In these cases SKF Hybrid bearings are the preferred solution eradicating electrical erosion issues on motors. SKF Hybrid bearings have rolling elements in non-conductive materials like ceramics, the insulation between rotor and stator is perfect, avoiding all current types to circulate.
  • Proper shaft grounding can easily eliminate erosion; it offers a simpler path than the bearings, straight to the ground with less resistance.
  • Because electrical erosion is a complex issue, some precautions can be taken during the installation of new equipment, such as using shielded cables; that can help reducing the risk of having electrical erosion. A change of the maximum “switching frequency” parameter can help as well. higher switching current frequencies lead to the current having more opportunities to discharge. Reducing the switching current frequency is a possible solution.
  • Outside of the drive, inductive line filters can be used in installations requiring long cables. A final action that could help preventing your motor failing because of electrical erosion, often recommended by motor manufacturers, is the use of insulated couplings.

Bearings

Conclusion

To counter electrical erosion, bearing manufacturers have developed insulated and ceramic bearings. However, identifying the problem before its effects are felt can help planning a proper preventative maintenance program. SKF has introduced to the market an instrument that detects electrical discharges which is the source of electrical erosion.

The SKF Electrical Discharge Detector Pen (EDD Pen) is capable of detecting sparks generated in electrical motor bearings when they are running. Its antenna is sensitive to the local changes of magnetic fields caused by electrical discharges, able to indicate the occurrence of the event on a time base.

Electrical erosion will conti nue to be a major cause for premature bearing failures on all motors controlled by drives today. It should be taken seriousl and diagnosed at an early stage. A proper predictive maintenance program should take into account this problem as it results in unplanned machine downtime and its associated costs. The EDD Pen is therefore a valuable instrument to incorporate in any predictive maintenance program.

EDD Pen

Glacier/FARR Gold Series® Keeps AG Equipment Maker on the “Fast Track”

Farr Gold Series Keeps AG Equipment Maker On The "Fast Track"

Gold Series

Farr Gold Series® GS8 dust collector at Fast Manufacturing, Mountain Lake, MN.

Challenge

When it comes to agricultural spraying equipment for the farming industry, there is one
company that stands apart from the rest. Most of Fast Manufacturing‘s employees are
currently or have been directly involved in farming operations —making them a uniquely
qualified source for exceptional agricultural products that are built with pride and efficiency. Founded in 1990, they continue to grow by using the latest machinery and technologies available.

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