Refrigeration Equipment

Compressor Failures: Failing to change compressor electrics after a burnout

By |2019-11-11T10:52:49+02:00Nov 11th, 2019|Articles, Products, Refrigeration Equipment|

In our previous article we discussed the problems associated with not fitting a compressor overload this time we are looking at what can happen when engineers fail to replace the compressor electrics after a compressor failure. It is customary to fit a contactor, with an overload protector, into the electrical control circuit of the compressor, [...]

Understanding Superheat Guide

By |2019-04-17T11:57:03+02:00Apr 17th, 2019|Air Conditioning, Articles, Latest news & Press releases, Refrigeration Equipment|

Read the Beginners HVAC Tech’s Guide for Understanding Superheat by ACHR News. Superheat is oftentimes the most confusing measurement taken in the field. TRICKY CALCULATION: Superheat is actually the difference between two measurements. And the term “heat” causes confusion, since the value can be negative. Much like subcooling, understanding and calculating superheat can be somewhat [...]

10 avoidable Faults in Leak Testing

By |2018-12-03T11:26:55+02:00Dec 3rd, 2018|Air Conditioning, Latest news & Press releases, Products, Refrigeration Equipment|

Checking refrigeration, air conditioning and heating systems for leaks is a complex challenge. For example, even the wrong choice of leak test method, such as the water bath method, can cause the tester to overlook leaks because he has not considered the deformability and volume change of the test piece. Inficon has compiled a top 10 checklist of [...]

Compressor Failures: No compressor overload

By |2018-09-19T08:15:47+02:00Aug 28th, 2018|Articles, Products, Refrigeration Equipment|

One of the most common and simplest of causes of compressors failure is due to the plant electrics not having a compressor overload fitted. When large Semi-Hermetic or Hermetic Compressors are fitted to systems where the compressor contactor has no overload fitted, the compressor is left wide open to liquid washout, Valve breakages or even [...]

Compressor Failures: Lack of Lubrication

By |2018-08-17T10:00:13+02:00Aug 15th, 2018|Articles, Products, Refrigeration Equipment|

Lack of lubrication can be categorised under two main headings. They are: Lack of lubrication Lack of oil Lack of lubrication: Lack of lubrication is where the oil either cannot lubricate the bearings due to the oil being degraded, or when the lubricant cannot reach the bearings due to blockages or loss of oil. Oil [...]

Compressor Failures: Overheating

By |2018-09-19T08:16:06+02:00Aug 2nd, 2018|Articles, Products, Refrigeration Equipment|

Compressors naturally run warm due to the heat from the Motor, from friction and from the Compression cycle. Providing the compressor runs within its design limits then it will give long and reliable service. When the compressor is run outside of its design limits or some other external situation exists that creates this problem then [...]

Compressor Failures: Liquid Slugging

By |2018-09-19T08:16:16+02:00Jul 27th, 2018|Articles, Products, Refrigeration Equipment|

Liquid Slugging is where extreme cases of Flooded Start or Liquid Flood Back occur. When large quantities of liquid refrigerant enter the compressor and then mix with the lubricating oil in the compressors sump. The resulting liquid/oil mixing and diluting, then creates major amounts of liquid and oil droplets in a frothy foam mixture. [...]

Compressor Failures: Flooded Starts

By |2018-08-17T09:49:18+02:00Jul 12th, 2018|Articles, Products, Refrigeration Equipment|

Flooded starts are probably the major cause of compressor failures. Flooded starts occur when liquid refrigerant has migrated from the system and condensed into the compressor oil. Migration can occur in all systems up to a point, due to the vapour pressure of the refrigerant being greater than the vapour pressure of the oil. It [...]

Compressor Failures: Refrigerant Flood Back

By |2018-08-17T09:46:33+02:00Jul 5th, 2018|Articles, Products, Refrigeration Equipment|

Refrigerant flood back occurs during the running cycle of the machine. This is where large volumes of liquid refrigerant are returned to the running compressor down through the Suction pipe work, in an uncontrolled manner. Depending on the degree of liquid returning to the compressor, determines as to what damage will occur. This can often [...]

Why do Compressors Fail?

By |2018-08-17T09:43:32+02:00Jul 4th, 2018|Articles, Products, Refrigeration Equipment|

We will post a few blog posts from Danfoss learning on why compressors fail to assist Technicians and Refrigeration Engineers in understanding the causes of compressor failures, their diagnosis, rectification and prevention. There are 5 main reasons for compressor failure: Refrigerant Flood Back Flooded Starts Liquid Slugging Overheating Lack of Lubrication The first 5 blog posts will [...]

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This Sliding Bar can be switched on or off in theme options, and can take any widget you throw at it or even fill it with your custom HTML Code. Its perfect for grabbing the attention of your viewers. Choose between 1, 2, 3 or 4 columns, set the background color, widget divider color, activate transparency, a top border or fully disable it on desktop and mobile.
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