Refrigeration System

Instructions given here are furnished as a guide. Persons attempting to use these instructions to make repairs to the sealed refrigeration system should have a working knowledge of refrigera- tion and previous training on sealed system repair.

Verify Refrigerant Type In The System

R-134a and R-12 are completely incompatible. Before starting any sealed system repair, it is extremely important to check serial plate of product to verify the type of refrigerant in the system.

Dedicated Equipment

R-134a must not be mixed with other types of refrigerants. R-134a must be recovered in dedicated and properly identified recovery bags and tanks.

It will be necessary to check with the manufacturer of your recovery equipment to determine R-134a compatibility. Some recovery equipment manufacturers have changeover instructions for switching between refrigerant types. Protect yourself and your equipment by following all manufacturer guidelines.

Also, ensure that your refrigeration hoses are specified for use with R-134a refrigerant. Research has shown that compounds in standard refrigeration hoses may enter sealed systems and ultimately restrict the cap tube in an R-134a system.

R-134a Refrigeration Systems

The sealed refrigeration system will consist of the same basic components being utilized in the R-12 systems.

There is a 10% to 15% discharge pressure increase using R-134a, with a 5% to 10% decrease in suction pressure when compared to the same product with an R-12 system operating at 90°F (32°C) ambient temperature conditions. Lower suction pressures result from the lower density of R-134a refrigerant which effects refrigerant flow rate. R-134a systems commonly operate in a 1”-2” vacuum on the suction side.

Products using R-134a refrigerant will generally have a longer capillary tube to maintain a similar flow rate and some models will have a larger condenser to reduce the discharge pressures and lower start-up sound transmission.

Miscibility of R-134a and Ester Oil

A special synthetic oil known as Ester oil is used as a lubricant in refrigeration systems operating on R-134a. Ester oils are produced from alcohols and fatty acids and are available in several different variants. Ester oils have a pleasant aroma reminiscent of fruit.

Ester oils generally include various types of additives for improving certain properties such as viscosity, temperature sensitivity, etc. These additives are often aggressive, and skin contact with Ester oils should therefore be avoided.

One of the most important requirements made on a refrigerant system is that the oil mix with the refrigerant. Since mineral oil and ordinary synthetic oil DO NOT mix with R-134a, Ester oil is used for lubrication. Ester oil dissolves in R-134a.

Ester oil is broken down by chlorine and cannot be used with R-12 (R-12 contains chlorine) or any other compound containing chlorine. Therefore, R-134a refrigeration systems have virtually no tolerance for chlorine molecules from CFC refrigerants (R-134a is an HFC and contains no chlorine).

DuringR-134a service, it is extremely important to avoid using equipment that may contain residual amounts of mineral oil, CFC’s or HCFC’s which

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Electrolux FKCH17F7HW service manual Verify Refrigerant Type In The System, Dedicated Equipment, 134a Refrigeration Systems
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FKCH17F7HW specifications

The Electrolux FKCH17F7HW is a standout refrigerator designed to meet the needs of modern households. With its sleek design and advanced features, it not only enhances the kitchen aesthetic but also promotes efficient food storage and preservation.

One of the key features of the FKCH17F7HW is its spacious interior. The refrigerator offers a generous capacity, making it ideal for families or individuals who like to stock up on groceries. Its flexible shelving system allows users to adjust the heights of shelves, accommodating very tall items and optimizing storage space.

The FKCH17F7HW comes equipped with advanced cooling technologies that ensure consistent temperature control. The Frost Free technology prevents the buildup of ice, saving users from the hassle of manual defrosting. This feature also allows for more efficient cooling, which in turn reduces energy consumption. The dynamic cooling system circulates air evenly throughout the refrigerator, helping to maintain an ideal temperature for perishable foods.

Another noteworthy characteristic is the humidity-controlled crisper drawers. These drawers provide an optimal environment for fruits and vegetables, keeping them fresher for longer. By regulating humidity levels, the crisper drawers also help to prevent spoilage, which not only saves money but contributes to less food waste.

In addition to storage practicality, the FKCH17F7HW incorporates energy-efficient technologies. The appliance is designed with an A+ energy rating, which means it operates with lower energy consumption without sacrificing performance. This eco-friendly feature not only benefits the environment but also reduces electricity bills.

The refrigerator also boasts user-friendly controls. Its intuitive electronic control panel makes it easy to adjust settings and ensure optimal performance. Moreover, the LED lighting illuminates the interior, making it easy to find what you need, even in low light conditions.

In summary, the Electrolux FKCH17F7HW is a remarkable refrigerator that combines style, functionality, and energy efficiency. With its generous capacity, advanced cooling technologies, and user-friendly features, it stands as a reliable appliance for any kitchen. Whether you're looking to preserve fresh produce or store family meals, this refrigerator meets a wide range of storage needs while maintaining an attractive design.
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