Hvac System Maintenance Near Me - Most experts say that detecting and dealing with coolant leakage is the biggest challenge in regular maintenance of air conditioning system in class 8 tractors. For this reason, regular maintenance on the system is crucial.
There's no such thing as a leak-free HVAC system on a tractor, said Steven Schaeber, service training manager and technical editor for the Mobile Air Conditioning Society. They all have minute leaks at every joint, at every O-ring connection, at every sealing point. The search to find and fix the leak is ongoing. Schaeber noted that without regular maintenance, the problems worsen.
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"Over a period of time — it could be seven, eight, 10 years — the refrigerant charge goes down, and if you don't maintain the charge level you run the risk of overheating the compressor and it failing," he said. . .
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Schaeber added vaporized refrigerant immediately after the leak; Therefore, electronic leak detectors and fluorescent tracer dyes are methods of detecting leaks. "In my opinion you should use both," he said. "There are some leaks you can't detect with ink."
Technicians need to be certified to perform automotive air conditioning (MVAC) work. The US Environmental Protection Agency states that "any person who repairs or services MVAC systems for consideration (payment or exchange) must be properly trained and certified under Section 609 of the Clean Air Act through an EPA-approved program."
EPA's approved technician training and certification programs "provide education on the proper use of MVAC service equipment, applicable regulatory requirements, the importance of refrigerant recovery, and the effects of refrigerant mishandling on the ozone layer and climate."
To be certified, technicians must be trained in an EPA-approved program — that is, the National Institute of Automotive Service Excellence — and pass an exam that demonstrates knowledge in these areas.
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To stay on top of HVAC maintenance, fleet technicians must be well-versed in the subject, said former consultant Travis Vines, who has helped fleets improve maintenance practices and shop operations. "The biggest problem I've seen is just a lack of training, and someone not implementing procedures and policies," he said.
Manufacturing and design advances introduced over the past 10 years have helped reduce emissions, system manufacturers and maintenance experts say.
Units have improved over the past 10 years, and in that time, high-performance condensers and evaporators have been introduced, helping reduce system emissions while providing greater efficiency, said Brett Herman, an engineering major in mechanical design from Rockford, Ill. . Based on Bergstrom Inc.
"Your refrigerant charge level goes down quite a bit. If there is a leak, you lose less refrigerant to the atmosphere with advanced heat exchanger technology," he said. "On the AC side, tires and fittings and seals have improved a lot in the last 10 years and I think that's a big contributor to reducing emissions and leakage."
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For more than 25 years, the refrigerant in the system has been R-134a, but regulatory changes are underway to a different refrigerant. The American Innovation and Manufacturing Act, part of the Consolidated Appropriations Act of 2021, directs the EPA to reduce the production and use of hydrofluorocarbons by 85% over the next 15 years. Hydrofluorocarbons (HFCs), including R-134a, are greenhouse gases.
According to the EPA, the final rule established by the AIM Act "sets baseline levels of HFC production and consumption that will be reduced, establishes an initial approach for the allocation and trading of HFC allowances for 2022 and 2023," and creates a system of compliance and enforcement.
Many in the trucking industry are anticipating a switch to 1234yf, the refrigerant under testing.
Although it is a leading replacement candidate, HVAC technicians want to make sure that 1234yf is as good a performer as R-134a,
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"Before we make this move we have to make sure we have all the proper loading equipment, [and] the training we have in place," Herman added. HVAC advice from experts
One of the simplest tasks in HVAC system maintenance is taking care of the filter. Brett Herrmann, Engineering Principal in Mechanical Design for Bergstrom Inc.'s Global Electrified HVAC and Thermal Systems Group. Robert Braswell, executive director of the American Trucking Associations Technology and Maintenance Council; And Travis Vines, owner of Mobile Transportation Services, which handles fleet maintenance for trucks, highlighted the "must-dos" of HVAC maintenance:
While working on HVAC systems, Herrmann saw a lot of trucks with filters plugged with dog and cat hair. Not cleaning the filters is tantamount to starving the air conditioning system, he noted. Removing the filter usually allows the tech to see the vapor. "If you can vacuum or clean the face of the evaporator coil, that will help with airflow."
Regular cleaning of exchangers is important, Braswell said, for any truck that goes on the road "with stuff blowing toward the engine. You have to clean [the exchangers] back, so you're pushing all the debris, bugs and dirt. The potential for system damage is constant," Braswell added. "Something gets caught in the blower wheel from the outside, or Corrosion can cause wiring to be compromised, or drain hoses to become plugged.” The latter can cause water intrusion into the cab, he said.
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For safe coolant/coolant circuits, check and confirm that fittings are tight and hoses are unobstructed. "A lot of times you'll see tires that don't handle well. Make sure the tires don't rub on sharp edges," Herman noted.
A receiver-dryer usually has a humidity indicator. "A lot of times when there's moisture, there's a leak somewhere," Herman said, or the system was contaminated during the last service. "If it shows that moisture has entered the refrigerant circuit, drain the refrigerant, do a proper flow check, make sure the system is clean, and recharge the system."
Vines emphasized that technicians must use appropriate personal protective equipment, such as eye protection, because technicians handle hazardous fluids. Safety protocols include proper ventilation and keeping coolant away from flames and high temperature surfaces.
Be sure to check the HVAC system in the cab of the truck. Herman recommends making sure the doors are working properly. Weird noises from revolving doors or the blower are tipoffs. "Sometimes you can find a little rub somewhere ... or hear odd noises when you turn the blowers at different speeds or move the doors. This is an indication that something is warped or something is loose," he said. "It's a simple thing to ask. If you go in and tighten that screw before it bends or breaks, it's good preventative maintenance." If you've ever needed to find an HVAC repair expert in Gastonia, NC, you know that having a broken HVAC system can be stressful. Your quality of life. Fortunately, many of the problems that lead to an HVAC emergency can be avoided if you invest in proper maintenance for your home's HVAC system.
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As you think about your own New Year's resolutions, consider adding a few to help improve the quality of your home's HVAC system.
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Indoor air quality can affect everyone and everything in your home, including your HVAC system. If dust is common in your home — even lightly — there's a good chance your HVAC system is picking up dust, dander, mold spores and other germs and circulating them around your home.
Not only can allergens and bacteria circulating in your home cause many health problems for your family, but it can also negatively affect the overall quality of your HVAC system's performance. The more dust and debris that fills the vents, the harder the system has to work to provide quality air throughout your home.
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There are many reasons to "go green" when it comes to your home, but you should consider investing in eco-friendly upgrades this year to help reduce the load placed on your HVAC system. In some cases, that means looking at your vents and fixing any hidden leaks to improve the efficiency of your HVAC system or to make sure there are no drafts around your home. If you have the opportunity and resources to invest in green technology, you should also consider a smart thermostat or zoning system so you can have better control over your home's temperature.
It would be nice if equipment and systems never wore out, but the reality is that even if your HVAC system is well maintained, you will eventually need to replace it. If you've had an HVAC system for one to two decades, you may want to consider an upgrade this season to reduce the risk of failure when you need it most.
To learn more about your HVAC maintenance plan for the new year or to get a quote for furnace repair services in Gastonia, NC, call the Dilling team today!
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