Tuesday, 26 November 2013
Lance Waterbarger's Fall Maintenance Secrets
clear

 

Nashville Interstate AC Service's technician, Lance Waterbarger, reveals
seven secrets as he performs a fall maintenance check on a 19-year-old Ruud air
handler installed in a customer's attic. The air handler uses both a heat pump
and a bank of two electric heaters. Lance explains how ice forming on the outside
coils is removed by reversing the heat pump and using the electric heaters to keep
the room air warm. Below are some of the checks Lance does as part of Interstate
AC Service's fall preventive maintenance service.

  1. The voltage across the capacitor is checked to see if the capacitor is good.
  2. All wiring connections are checked to be sure they are tight. In this instance,
    a transformer has been replaced at some point in the past and a fuse was
    added. This is smart, because it's better to replace a simple fuse than buy
    and install a new transformer in the event there is a short in the low voltage circuits.
  3. The blower motor bearings are checked for play, to see if the bearings have worn out.
  4. Turn on the heat and put it in emergency heat mode to test the heat banks. The
    amperage draw is checked for each heater. Since the amperage draw is considerable,
    you want a short time delay between the first and second heat bank coming on, to
    avoid dimming the house lights.
  5. The heat bank sequencer is checked for proper operation. The two heaters should come
    on in staggered fashion. Generally, you'll have a 3- to 5-degree swing between first and
    second stage heat. When the first stage comes on, it goes into defrost mode in order to
    melt the ice on the outside coils.
  6. Check that the heaters come on during the outside unit defrost mode.
  7. Check that the outside unit reversing valve works in defrost mode. The outdoor coil
    freezes up in heat mode and there is a sensor on the line that will indicate when it needs
    to thaw the coil. It has a timer or a demand control board that will switch the reversing
    valve, turn the heaters on and turn off the outdoor condensing fan. This traps the heat and
    melts the ice off the coil. When the sensor senses that the coil is approximately 50-55
    degrees, it will kick in automatically back to your regular heat cycle.

Other checks (not seen in this video) which are part of our preventive maintenance service include:

  • Inspecting all air filters.
  • Checking whether the blower belts are worn out.
  • Checking the thermostat for proper operation and settings.
  • Checking and cleaning the condensate drain.
  • Checking all safeties on the unit.

 

clear
Posted on 11/26/2013 3:00 AM by Eddie Hutton
clear

Important Tips & Advice

 

 

You often don't think about your heating or air-conditioning system until something goes wrong. But there is so much you can do to help keep your system from breaking down. We regularly post information to help you learn what you can do to keep your system running, to save money and energy.  Search our many posts, videos, and podcasts, for valuable information that is never a sales pitch. Subscribe to receive an email when something new is posted, so you won’t miss any important tips.

Choosing a Repair Company

Whether you’re talking about heating or cooling, repairing or replacing a system, you want a company that can advise you reliably based on what is in your best interest, not based on what is convenient or what earns them the most money (commissions). We'll help you choose the best solution to fit your needs. Check out our many posts at HVAC News You Can Use and our podcasts.

Going Green

We're concerned about the environment and know all the latest technologies - such as geothermal systems, LED lights, and smart thermostats - that can reduce energy and put more "green" in your pocket!  We've provided HVAC systems in certified LEED buildings and written many posts on ways to Go Green.

The Sign of Service

We are a repair company performing a full range of commercial and residential heating, air conditioning, energy management and comfort products service, maintenance, and installation. We are a locally-owned company serving Nashville-Davidson County and the surrounding counties including Williamson, Rutherford, Wilson, Sumner, Robertson, and Cheatham.

Who We Are

Our service technicians are fully trained and experienced.  We can tackle the most complicated system to the simplest of systems – from large commercial plants to single-family homes.  Our ownership group of Eddie Hutton, Tony Anderson, Roger Eldridge,  Swaney Powers and Alan Seilbeck have over 125 years combined experience as leaders in the HVAC industry.

Dispatch

We are proud of our dispatchers that respond to your telephone call. When your system is down they make things happen. Our trucks are loaded with most parts needed for a quick repair. You can call day and night 7 days a week. Our normal weekday hours are 7:00AM to 5:00PM. Click on the button below to schedule a service call online. Emails and forms can only be answered weekdays from 7-5.”  

615-832-8500 Online Service Call

Maintenance

Did you know you should service your HVAC on a regular schedule – just like you would your car?  We have specialized maintenance programs to ensure the clean, energy efficient and safe operation of your HVAC systems.  This helps minimize service interruptions/breakdowns and maximize your equipment's lifespan.  All maintenance contract customers are assigned a primary technician that will get to know your facility and equipment and will treat it like his own.  You’ll receive discounts on repairs or new installations, and get priority service when it is cold or hot outside and you need service promptly.  Plus, maintenance contract customers are never charged overtime rates for emergency services after-hours, weekends or holidays. We’ll teach you how to save on maintenance costs by showing you things you can do yourself and when you need a technician. Here are some good posts:  Repair vs. Replace, Things to Try Before Calling for Service, Springtime Tips that Pay Off.

Commercial

Our team takes on HVAC projects for office, school, retail and industrial facilities. Check out these case studies:

Replacement of a 250-ton Cooling Tower

Ductless HVAC at Brentwood Middle School