Semi-hermetic compressor and condensing units are used to cool water and air in appliances and refrigeration systems. These types of equipment are available in a range of capacities, from a few hundred watts to tens of kilowatts. They are characterized by a closed-system design, which prevents dust and other contaminants from entering the system.
The design of a semi-hermetic compressor has undergone considerable improvements. They have become the preferred choice for larger refrigeration applications. Today, new models are more compact and offer mechanical and electronic improvements. These devices also provide easy connections for the user.
Traditionally, they were only available as open type units. They were hard to maintain, which meant frequent breakdowns and long downtime periods. But the introduction of other technologies has made maintenance easier. Nowadays, more organizations expect proactive maintenance, resulting in higher uptime. In addition to this, modern compressors can perform at full efficiency deep into their lifespan.
These types of compressors are usually driven by an electric motor that generates a piston-pumping motion inside a cylinder. The liquid receiver consists of a generously proportioned inlet and outlet for liquid, and has a rotalock shutoff valve, an optional connecting safety valve, and a brazed design.
The crankcase houses the oil pump, which distributes oil to the crankshaft through lubrication channels. The volume of oil in the crankcase is a significant factor that determines the temperature distribution of the hermetic compressor.
Semi-hermetic compressors are a good option for large-scale refrigeration applications, such as supermarkets and commercial kitchens. They are capable of lasting up to twenty years, with light usage. They are also designed for periodic inspection, repair, and diagnosis.
A semi-hermetic compressor is the most economical option when buying a large unit. Depending on the usage and environment, the compressor can last up to eight to ten years. If the compressor is opened for periodic inspection, repairs, and diagnosis, the repair costs will be less than the cost of a brand new compressor.
In addition to this, there are now emergency repair kits and components for hermetic compressors. You can even purchase customized repair parts if you are planning to rebuild your hermetic compressor.
Despite these advantages, it is still important to maintain and monitor the condition of your compressor. If the moving parts are contaminated, or there are any signs of wear, they can reduce the lifespan of the machine.
Features of Before semi-hermetic compressor units Usability:
• The compressor unit can for use in many kinds of refrigerants such as R22, R134a, R404, R407C.
• The same serial compressor unit, is suitable for different applications.