Look for new Cornell Pump flange covers, emblazoned with our logo, to start gracing our pumps. We’re adding the covers as our current stock depletes, so if you’ll start to see them on pumps shipping in the near future.
Bob Jansen, Agricultural Market Manager, retires after 43 years in the pump industry, 25 years with Cornell
Cornell Pump congratulates Bob Jansen who is retiring as our Agricultural Market Manager. Bob Jansen, a well-known figure in the agricultural pump industry, retires after 43 years in the business; 25 of those at Cornell Pump. Taking over the department is Eric Holtan, who has been with Cornell Pump as an inside agricultural sales engineer since 2002.
Jansen first joined Cornell Pump in the late 1980s, after having served at several retail irrigation companies. Bob was destined for pumps—having grown fond of them at Oregon State University, where he received a Bachelor of Science in Agricultural Engineering Technology. Jansen worked at Cornell for several years, and then took a position with a distributor, returning as Cornell’s Agricultural Market Manager in 2006.
Jansen has been very involved with the Irrigation Association, as a longtime Certified Irrigation Designer, and as an instructor at the IA Irrigation Show, lecturing on pump design and operation. Jansen has also been instrumental in Cornell Pump’s Pump Schools for decades as a presenter and MC.
Bob will spend more time with his wife of nearly 45 years, his three grown children, six grand kids, and large extended family. A lover of baseball, he will also spend time coaching and umpiring youth teams, and watching his beloved San Francisco Giants and Oregon State Beavers.
“We wish Bob all the best in a well-deserved retirement,” said Marcus Davi, Cornell Pump Vice President of Sales. “He was a champion at Cornell for new products for his market, and has steadily grown our revenue, while maintaining our position as market leader. He has made the department better through his leadership, and he richly deserves to enjoy his retirement.”
About Cornell Pump Company
Cornell Pump Company, is a Clackamas, Oregon based company that provides premium quality, efficient centrifugal pumps for industrial, agricultural, mining and municipal applications. Since 1946, Cornell Pump has engineered products to be rugged, durable, and dependable— efficient by design. Cornell pumps are found in products and applications around the world. Cornell Pump is a subsidiary of Roper Technologies, a diversified technology company that is a constituent of the S&P 500, Fortune 1000, and the Russell 1000 indices. For more information on Cornell, please call (503) 653-0330, or visit www.cornellpump.com.
Keeping your pump bearings well-lubricated can alleviate problems. These tips on bearings from our Installation and Care manual can help.
- Oil level must be correct before unit is started.
- Oil lubricated frames must be installed horizontally and level.
- Grease lubricated motors and frames must be maintained per instructions accompanying the pump. Grease code EP-2 is recommended for most applications. Added grease must be the same type as recommended in the O&M manual.
- Oil and grease should not be mixed.
Brings extensive agricultural pump experience, troubleshooting, and product knowledge to the position
Cornell Pump is pleased to announce Eric Holtan has been appointed as the Agricultural Market Manager, with responsibilities for all Cornell Pump irrigation, manure, and other related agricultural product lines around the world. Holtan succeeds Bob Jansen, who is retiring.
Eric Holtan joined Cornell Pump in 2002, and brought a wealth of experience in farm implements and distributorships from his experience with farm machinery sales, as well as first-hand pumping experience from working on his family’s farm growing up in eastern Oregon, and tending his own acreage in Newberg, Oregon. A graduate of Oregon State University, he has a BS in Agricultural Engineering Technology. Eric has gained 18 years of pump experience at Cornell, and is very familiar with our agricultural product line, priming systems, pump selection, and troubleshooting. He also has spent time the last several quarters on road trips meeting distributors around the county, and offering sales support to the agricultural market beyond his traditional inside sales roles, such as technology implementation.
Holtan takes on his new responsibility at Cornell, as the company remains an industry-leading manufacturer of end suction centrifugal pumps. He will support the continued roll-out of Cornell’s new agricultural series, Cyclone® Vertical Turbines, along with our pump telemetric system, Cornell Co-Pilot, and new smaller series of irrigation pumps.
“Eric has been an integral part of Cornell’s success in agricultural pumps for nearly two decades, said Marcus Davi, Cornell Pump Vice President of Sales. “Holtan will do very well in his position with his extensive product knowledge, strong understanding of pumping principles, and connection to our dealer and distributor network around the world. I know he ready for this expanded challenge, and expect him to be very successful for Cornell and our customers.”
About Cornell Pump Company
Cornell Pump Company, is a Clackamas, Oregon based company that provides premium quality, efficient centrifugal pumps for industrial, agricultural, mining and municipal applications. Since 1946, Cornell Pump has engineered products to be rugged, durable, and dependable— efficient by design. Cornell pumps are found in products and applications around the world.
Cornell Pump is a subsidiary of Roper Technologies, a diversified technology company that is a constituent of the S&P 500, Fortune 1000, and the Russell 1000 indices. For more information on Cornell, please call (503) 653-0330, or visit www.cornellpump.com.
It’s the height of summer here in North America and the sun is often beating down; but pumps still need coverings even in the hot/dry weather! We’ve had NPSH issues because of temperate increases of pipping being in the sun, and even pumps misaligning because of being painted black and sitting in direct sunlight, causing thermal expansion.
Proper pump housing will also be important in six months during winter weather, when the elements can cause pipe freezing, issues with dry-priming systems, electrical issues in water, and more.
Euromacchine, a Cornell Pump distributor in Italy, showed us how they repurposed our shipping crate into a tree house! We’re looking forward to seeing how additional pump shipment crating will be used to make into an expanded deck for the tree house, or even a second-level addition.
We meticulously pack pumps for sea shipping or even expedited air freight for distributors outside of North America—as well as doing a great job for those shipments making shorter trips by truck from Portland, Oregon. Cornell Pump sells in more than 70 countries around the world, offering outstanding sales support through our distributor network; from Argentina to Zambia, you can find a Cornell Pump working in the field.
Cornell designed and built our short set vertical turbines—the Cyclone VT series—to be robust, reliable, and efficient. Based on our very popular RB and H series centrifugal pumps, the short set vertical turbines are great for pivots, micro-irrigation, and other agricultural applications.
Offered in enclosed and open lineshaft models, with up to 100 PSI of head, and flow rates of ~300 to 3,000 GPM across five models, the Cyclone VT series is a great performer for various markets, including agricultural, industrial, and municipal. Learn more about the series in this quick video introduction.
Cornell Pump has been manufacturing (and troubleshooting ) refrigeration pumps since the 1950s. Our open drive CB Series has been a consistent performer for decades, and our Arctic King line of hermetic refrigeration pumps has proved very popular since introduction in 2013.
Here are some symptoms, possible causes, and corrective actions to take when dealing with Cornell’s CB (open drive) and HT (semi-hermetic) series refrigeration pumps.
|MECHANICAL PROBLEM||REMARK||CORRECTIVE ACTION|
|Loss of prime at start-up||Volute vent line feeds to another line instead of directly into the receiver||Volute vent piping should be directly into the separator above the maximum liquid level|
|Vent line closed||Open volute vent line|
|Pump started before completely filled with liquid or before cooled down||Follow the “start-up instructions”carefully and allow ample time forsystem to balance and pump to cool down|
|Pump started with discharge valvefully open||Throttle discharge valve at start up to almost shut-off and open it very gradually|
|Loss of prime during operation||Cavitation||Cavitation due to an excessive flowrate, the closing of the stop valve will bring about immediate recovery—adjust the hand expansion valves as necessary to bring the flow rate within NPSHA limitations|
|Recirculation||Utilize a bypass line to ensureminimum flow requirement|
|Vapor entrainment||Evaluate false load condition|
|Reduce rate of temperature draw down in receiver by the compressors|
|Raise liquid level in receiver|
|Motor overloading new installation||Incorrect rotation||Ensure proper rotation|
|Incorrect pump selection||Review performance conditions and consult factory|
|Incorrect hand expansion valvesetting||Adjust the hand expansion valves as necessary to bring the flow rate within NPSHA limitations|
|Motor overloading existing installation||Oil indigestion from system||Check amperage and voltage, compare with normal power, oil ingestion will increase power requirement and potential tooverload the motor|
|External seal (characteristics) leak (only on open drive pumps/ not HT)||Failure of outboard mechanical seal assembly||Mechanical seal replacement required with a Cornell mechanical seal replacement kit|
|Internal seal leak||Failure of inboard mechanical sealassembly||Replace mechanical seal with a mechanical seal replacement kit Characterized by high oil consumption but no visible oil leak|
If a pump suction is not placed an acceptable distance from the surface of the liquid, the pump can experience vortexing. Similar to cavitation, with the loss of efficiency and damage that can occur to the pump, vortexing is the result of too much water relative to the pit/sump depth being drawn into the suction line. A depression forms on the surface of the water and is commonly seen as a whirling vortex.
Many have seen a whirling vortex form when a sink or bathtub drains. As the water level in the tub decreases, the ferocity of the whirlpool increases, with a column of air often visible all the way into the drain. A noticeable whirl on the surface of the body of liquid being pumped does not need to be perceptible to human eyes to cause damage, and in the worst cases, a column of air can lead straight into the suction pipe.
Vortexes form between the pump suction and intake tank fluid surface. This causes air to enter the pump suction, and the entrained air reduces pump capacity and efficiency. Excessive shaft deflection is also produced by the entrainment. The pump’s mechanical seals, bearings, piping, couplings and impeller can be damaged by the vortex condition.
Ideally, vortexing can be anticipated in the design phase and eliminated with the proper amount of suction for the water level. However, if a pump experiences vortexing, the issue can be reduced or stopped by changing the velocity of the water entering the pump. Reducing or eliminating vortexing can be accomplished through:
- Increasing the size of the inlet piping or installing a flared suction line
- Increasing the depth of the fluid source (or raising the pump to increase the distance between the bottom of the fluid source and the intake)
- Reducing the pump flow rate
- Operating at a different level to reduce head
- Slowing the system Reducing the number of pumps running in the fluid source
- Using diffuser screens or baffles
- Alerting the fluids/solids ratio in the intake
- Realigning the return line to reduce a waterfall effect in the liquid source
- Floating large balls on the surface to dissuade vortex formation
- Cleaning the trash screen to remove restrictions
A couple of weeks ago, Cornell had a request for some of Condensed Hydraulic Data Books from a P.E. in South Carolina. These slim, pocket-vest sized books have been offered by us for decades. The engineer who requested the books wrote:
“I have had the pleasure of using the Cornell Pump condensed hydraulic data book for hundreds of designs since1984. It’s my go-to source for all hydraulic calculations.
I’ve got a young engineer I’m bringing along and would love to have a copy to give him. Would it be possible to obtain a copy or two?”
We are certainly happy to oblige. The engineer even sent a picture of his copy of his much-referenced data book. (We sent him along a couple of new copies he can use as well…)
Cornell provides thousands of these diminutive books with C values, nomographs, and more for handy in-field calculations per year. Use our contact form to request one for yourself.
We also encourage you to use the mobile tool kit on your phone (Apple IOS and Android Play). The apps come in Imperial and metric versions, and allow calculations for TDH, NPSH, friction loss, and suggest Cornell pumps to meet specifications entered.
With these resources, you can make accurate system calculations on the fly!