How to avoid HVAC Compressor failure?

 HVAC compressors can be literally said as the heart of any air conditioning and refrigeration system. Thus, if it fails there is no other option than to replace the item with a new one. Yet, purchasing a new compressor is expensive, thus it is important that you know the causes of compressor failure and how to avoid them conveniently. The best HVAC compressor services in Dubai often give proper guidelines about the regular maintenance of the compressor. 

Major reasons behind a compressor failure are mentioned below: 

• Problems with the refrigerant
• Electrical or power malfunctions
• Partially or fully blocked tubes/suction lines
• A faulty condenser can affect the performance of the compressor

Here are some of the ways through which one can avoid a compressor failure: 

Regular preventive maintenance: Routine preventive maintenance is a must when it comes to industrial appliances to prevent failures. Most of the problems with HVAC compressor units can be prevented upon prior notice. A well-maintained compressor usually lasts for long years, yielding high performance and efficiency. 

Avoid incorrect charging of compressors: Many compressor failures are caused due to incorrect refrigerant charging. To prevent such a situation, it is important that the compressor is installed by a well-reputed compressor contractor who knows the way around a compressor and can guide you through proper charging methods. 

Condenser unit must be cleaned regularly: Poorly maintained outdoor condenser units can cause compressor failure. How? Because they can accumulate dirt over time and cause malfunctions. Try to maintain the compressor in excellent condition for a longer lifespan. 

Proper piping and mounting: All industrial and commercial HVAC systems have elaborate piping and airflow systems. They determine the workflow of every compressor. If the piping and airflow system is troublesome, the compressor will have its repercussions, such as issues with pressure and the overall operation. Thus, keep regular inspections on the piping and mounting. 

Oil and lubrication: Lubrication is a critical task when it comes to compressor maintenance which will ensure the proper functioning of the unit. The oil also acts as a lubricant for the insulator and a sealant of the compressor, apart from the parts in motion. Changing the compressor oil is a must on your checklist of routine preventive maintenance.

If you are in doubt about any of these tips or are in need of further detailed guidance, you can always contact any compressor services in UAE. Ask and do regular maintenance to avoid system failure which will cost you many bucks unnecessarily. 

Oil-Injected Compressors v/s Oil-Free Compressors

A new buyer on the road in need of an air compressor will be confused with the labels of ‘Oil-Free” and “Oil-Injected” attached to the respective ones within the shop. A professional or an expert knows the two and buys the right one for his/her company, whereas a non-expert in the field might stand wondering, utterly confused about the right choice. This article puts before you the actual difference between them and then you know which is accurate for your business. Once you know, contact the best compressor services in Dubai, they will install the right one that suits your need. 

What is an Oil-Injected or Lubricated Air Compressor?

Oil-Injected air compressors use a liquid component, most commonly oil for its lubricating and sealing properties, injected into its operation chamber for the smooth functioning of its elements. Oil-Injected compressors are majorly utilized for:

Cooling and lubricating the compressor elements’ and moving parts

Cooling the compressed air within the chamber

Minimizing leaks during discharge

Operating within temperature limits, removing excess heat during the processes

The lubricant is removed from the compressed air using different air filtrations like centrifugal separators or coalescing filters. The oil is thoroughly filtered and cooled before re-injecting them to the operational chamber. These lubricated air compressors require routine maintenance and change of oil, or any synthetic lubricant, from time to time. 

What is an Oil-Free Air Compressor?

Oil-Free air compressors are operated with external gearboxes, thus the elements within the compressing chamber do not come together to create any friction. As a result of which, the compressing chamber is completely lubricant-free, whereas the external gearbox requires oil or other lubricants against corrosion, reduces friction and ensures efficient, reliable operation of the elements. To avoid the scenarios of overheating and possible leakages, oil-free compressors often have a two-step process of compression. In order to remove excess heat, there is an intercooler installed in between the two stages and an aftercooler at the end of the process. 

They have two advantages compared to oil-injected compressors:

They have low maintenance costs, as there is minimal repair work in the compressor chamber, only the gearbox requires regular service.

They offer clean compressed air, free of any contaminants or foreign particles within.

In conclusion, it can be said that the industries with heavy workload using air compressors can go with the lubricated/oil-injected air compressors and the industries like pharmaceutical, food processing or electronics, that requires high-quality pure air can pick oil-free compressors for an excellent final product free of contaminants. Instead of going for a new compressor, one can always opt for highly serviced used compressors in UAE, for lower costs.  

Tips for Commercial Refrigeration Maintenance

 Walk-in freezers, coolers, and other types of commercial refrigeration units are an integral part of any business industry. Even the slightest of errors can lead to the breakdown of these refrigeration systems, thus they need to be regularly checked for optimal performance. Poor maintenance of commercial refrigeration can cost you many things like you could lose the unit as a whole, lose customer base due to inhospitable environment, energy costs including extra electricity bills, repairing and replacements of the parts etc. Thus, monthly and quarterly maintenance had to be done in different parts of commercial refrigeration. One can also hire the best HVAC services in Sharjah to do the maintenance checks from time to time. 

Check refrigerant levels for leak or low or wrong charge

Check lines of condensation for any clogging, and allow it to drain freely

Clean condenser coils, if they are dirty or dusty, it is difficult to maintain temperature, which causes overheating and component failure.

Maintain evaporator coil, responsible for absorbing heat. Blocked airflow inside the unit can cause the coil to freeze, leading to water leaks and temperature rise. 

Clean fan blades, poor lubrication or blockages in the vents can lead to fans stopping to spin. 

Inspect fan motor, dirt inside the cabinet can cause serious malfunctions of fan motors. 

Check for loose electrical components, a surge of electrical current creates excessive heat and a total electrical control failure.

Check temperature and defrost settings, faulty relays, controls, or sensors can cause defrost issues. 

Check filters on ice makers, rinse them with warm water until they're clear of debris.

Check for holes, cracks in gaskets, which can prevent the door from sealing shut, causing cool air to exit the fridge’s interior. 

Lubricate door hinges

Keep Your Refrigeration Unit Dry, any spills have to be cleaned up immediately. 

Keep the above mentioned commercial refrigeration maintenance checklist in mind to maintain your equipment in top form. The best maintenance experts of chiller companies in Sharjah providing excellent refrigeration services suggest that maintenance is to be done periodically for optimum efficiency and risk-free regulation of the entire commercial space.