Archive for June, 2015

HVAC: Solving the Mysteries of Maintenance

June 23, 2015

Let’s face it. There are lots of moving parts in your HVAC  system. It’s a complex piece of equipment. But there’s no mystery to this: It pays to keep that system running as efficiently as possible for as long as possible!

Lee Company preventative HVAC maintenance.

Proactive, preventive maintenance with the HVAC  pros from Lee Company can help you:

  • Increase the lifespan of your current HVAC system
  • Enjoy a comfortable home temperature all year round
  • Improve your home’s inside air quality
  • Save money on electric bills

Saving money on those monthly bills is great. Being proactive – maintaining your HVAC system on a regular, annual basis – also saves you the headaches and unexpected expenses that come with the “wait and see” approach.

So don’t wait! Give us a call today at 615-567-1000. We’re here to help, just as we have been for more than 70 years. Your home is where our heart is.

HVAC Inspection: Are You Red-Flag Ready?

June 13, 2015

When the heat of the summer hits, will your HVAC system be ready to handle it? Regular maintenance – including an annual HVAC inspection – can detect red flags that signal potential problems.

Annual HVAC maintenance

With more than 70 years of experience, Lee Company understands what is most likely to go wrong with an HVAC system, and how to keep your system running better, longer. The red flags we watch out for include:

  • Abnormal temperature readings
  • Abnormal refrigerant pressure readings
  • Signs the liquid refrigerant is flooding back to the compressor
  • Dirty air filters or evaporator coils
  • Blower motor issues
  • Faulty metering devices
  • Frozen lines around your HVAC

Some of these red flags – such as problems with the refrigerant – can lead to a costly compressor failure that is completely preventable. Play it safe! Flag down the HVAC team from Lee Company now and ask for an HVAC inspection.

We’re here for you. Call us anytime!

Nashville & Franklin: 615-567-1000

Murfreesboro: 615-867-1000

Mount Juliet: 615-467-7000

North Alabama: 256-353-1000

Maintenance Essential for Maintaining Efficiency

June 06, 2015

 

Keeping a cooling tower free of dangers such as bacteria and corrosion is best achieved through a regular, comprehensive maintenance program. Although recommendations for the frequency of certain actions tend to vary, a comprehensive program includes draining and cleaning, water treatment, mechanical and electrical component inspection, and winterizing.

Discussing the importance of regular cleaning, Todd Beard, regional operations director at Lee Company, noted towers should be drained and cleaned at least once a year.

“Sections of the tower that should be cleaned are the hot and cold water basins, fill, and nozzles,” he said, adding, “Nozzles, which are located in the hot water basin, sometimes get overlooked during cleaning. Maintaining the nozzles is a very important step in the cleaning process. Properly functioning nozzles ensure water will be delivered uniformly over the fill. This is important in order to achieve maximum capacity from the tower.”

Drew Wettlaufer, vice president, building services and energy solutions, Marble Mechanical Service, Birmingham, Michigan, emphasized the importance of good water treatment.

“Without some kind of water treatment, bacteria can tend to form, which, in turn, could foul condenser tubes and reduce chiller efficiencies,” he said.

Mihir Kalyani, HVAC marketing engineer, Evapco Inc., also stressed this point, stating a systematic water treatment plan should be implemented from day one. “Makeup and recirculated quality must be checked on a regular basis, as often as weekly,” he said. “A systematic water treatment plan must be put in place to ensure prime water quality.”

Without a plan like this in effect, Kalyani warned, “Scale, corrosion, and bacteria growth can quickly deteriorate water quality.”

Beard and Chris Walton, assistant manager, marketing communications, Baltimore Aircoil Co., noted some of the greatest risks stem from potential airborne impurities and biological contamination. “These threats, such as Legionella, should be controlled through the use of biocides,” Walton said. “And, such treatment should be initiated at startup and continued regularly.”

Walton also pointed to ASHRAE Guideline 12-2000, “Minimizing the Risk of Legionellosis Associated with Building Water Systems,” as an excellent resource on this topic.

The mechanical and electrical components of cooling towers also require maintenance. Walton noted cooling tower fans are typically driven by belt- or gear-driven systems.

“Both require routine maintenance to ensure reliable, trouble-free performance,” he said.

Beard added, “Regular inspection of these components cannot be overlooked when it comes to the overall maintenance of a tower.”

And, finally, Beard said, depending on the region and application of the cooling tower, it should be drained and winterized for the non-cooling season.

Benefits Can’t Be Ignored

Despite the tendency to ignore or overlook cooling towers, the benefits of an all-encompassing maintenance program cannot be overstated.

Summing up the overall importance of cooling tower maintenance, Beard said, “In the end, a poorly maintained tower is a sure and proven way to increase spending and decrease life expectancy of some of your most valuable assets.”

Source: ACHR News

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