Electrolux FKCH17F7HW service manual Vacuum Pump Maintenance, Refrigerant Leaks

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Refrigeration System

Vacuum Pump Maintenance

It is absolutely essential to maintain your vacuum pump according to the manufacturer’s instructions including required oil changes at the recommended intervals. Vacuum pump oil should always be changed after evacuating a contaminated system. Vacuum pump performance should be checked periodically with a micron gauge.

Vacuum pump suppliers may or may not recommend changing the vacuum pump oil to the same type that’s in the system being evacuated. Some manufacturers may recommend a vacuum pump that’s dedicated to R-134a systems.

Robinair has stated that their current and discontinued vacuum pump models, using mineral oil currently specified for use in their vacuum pumps, can be used to evacuate R-134a/Ester oil systems. Robinair also states that it is acceptable to alternate between evacuating R-12/mineral oil and R-134a/Ester oil systems without adversely effecting the vacuum pump’s performance.

For other brands of vacuum pumps, check with the manufacturer for restrictions and guidelines when using with R-134a.

If you use a vacuum pump with mineral oil to evacuate an R-134a system, it is ABSOLUTELY ESSENTIAL to have a shut-off valve between pump and your manifold gauge set as shown on page 4-11. The hand valve must be closed during all times when vacuum pump is not operating. This will prevent migration of mineral oil vapor into R134a/Ester oil system. If vacuum pump should stop during evacuation for any reason, the hand pump shut-off valve must be closed immediately.

Refrigerant Leaks

A system with R-134a and Ester oil will become saturated with moisture much faster than a system with R-12 and mineral oil. If your leak was in the low side of the refrigeration system when the compressor is running the pressure in the low side will go into a vacuum. As additional refrigerant leaks out the system will go deeper into a vacuum. The system running in this vacuum will allow air and moisture to be pulled into the sealed system. The moisture pulled in can then be mixed in to the Ester oil in the compressor.

If the product has had a low side leak you will need to install the two stage service dryer filter part number 5303918288. You must heat the crankcase area of the compressor using a heat gun on the high heat setting throughout the 30 minutes you are running your vacuum pump to pull a vacuum on the system. Every 4 to 5 minutes while you are running your vacuum pump and heating the crankcase area, shake the compressor. By heating the crankcase you are heating the oil in the compressor. This will drive the moisture out of the oil. By shaking the compressor this will allow the moisture to come to the top of the oil faster so the vacuum pump can remove the moisture from the system.

Electrolux Home Products does not approve the use of the Sweep Charge for sealed system repair. This method of servicing sealed systems is often used to repair products in the field. The Sweep Charge does not adequately remove moisture from the oil in the compressor. In a R-134a system you will need to replace the compressor if the product has had a low side leak and you are servicing with the Sweep Charge procedure.

R-134a refrigerant molecules are smaller than R-12 molecules. This means that R-134a will pass more minor leaks and the rate of flow will be greater than for R-12. Therefore, it is now more important than ever to follow good brazing practices. Use a good grade of silver solder. A 45% silver solder is recommended.

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Contents Convertible Refrigerator / Freezer Page Section Basic InformationElectronic Control Installation Information Safe Servicing PracticesProduct Features Adjustable Shelving Door StorageCrisper Drawers CrisperCare and Cleaning Cleaning The InsideCleaning The Outside Serial PlateElectronic Control Switching Between Refrigerator and Freezer Mode Electronic Temperature ControlSetting Selection Operation of Electrical Control Components Freezer and Refrigerator ModulesAmbient Thermostat Fan RelayService Diagnostic Mode Error Indication Fail Safe ModeExiting Fail Safe Mode Stuck KeyElectronic Control Refrigeration System Safety Warnings DefinitionsBasic Components Refrigerant CycleCompressor Replacement Testing for Refrigerant LeaksLow/High Side Leak or Undercharge To Flush The System To Use Refrigerant To Flush The SystemDo not exceed 300 Psig Do not exceed 150 PsigInstalling a New Compressor Do not use compressor if you do not hear this soundCondenser Replacement Filter-Drier Installation Evaporator and Suction Line ReplacementInstalling Evacuation and Recharging Equipment Equipment Needed for Evacuation & RechargingEvacuating System Charging The SystemFinal Leak Test Verify Refrigerant Type In The System Dedicated Equipment134a Refrigeration Systems Miscibility of R-134a and Ester OilWater In The Refrigeration System Vacuum Pump Maintenance Refrigerant LeaksLeak Detection 134a propertiesHFC-134a, CFC-12 Pressure Temperature Chart Inhalation Toxicity Cardiac SensitizationSpills or Leaks Skin and Eye ContactLeak Testing Refrigerant Recovery SystemsCombustibility of HFC-134a Bulk Delivery and StorageComponent Teardown Component Teardown Door Hinge and Door Assembly Removal Exterior ComponentsDoor Handle Removal Kickplate RemovalDoor Stop Removal Door Gasket and Inner Panel RemovalGallon Door Bin Removal Two Liter Door Bin RemovalDoor Switch Removal Glass Shelf Assembly RemovalInterior Components Crisper Drawer RemovalLight Shield Removal Crisper Cover Assembly RemovalLight Fixture Removal Baffle Plate Removal Control Switch RemovalEvaporator Cover Removal 19. Evaporator Fan Assembly Removal Electronic Control RemovalDefrost Heater Removal Defrost Thermostat RemovalEvaporator Removal Compressor Area Components Power Cord RemovalFilter-Drier Removal Compressor Removal 25. Compressor Electrical Component RemovalDrain Pan and Drain Pan Heater Loop Removal 27. Drain Pan Heater Loop RemovalCondenser Service Troubleshooting Problem Cause Correction Troubleshooting Compressor and evapora- tor fan motor does not run Troubleshooting Troubleshooting Wiring Diagrams Wiring Diagrams Wiring Diagrams Installation Information Important Safety Instructions Safety PrecautionsInstallation Information Leveling LocationTo Level Unit Electrical Information Electrical ReceptacleDoor Removal Door Handle Mounting InstructionsModel FKCH17F7HW Unit Dimensions Installation Information

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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