Brand refrigerators Oka have earned a reputation as reliable and durable units that have served their owners well for decades. However, even the highest quality equipment tends to fail, requiring careful inspection and, possibly, replacement of worn components. Self-repair often becomes the only economically viable solution, but it is impossible without proper disassembly of the case.
The process of dismantling this equipment has its own technological features, which are important to consider in order not to damage the thermal insulation layer or thin metal of the doors. Wrong approach removing panels can lead to displacement of the geometry cabinet, which will subsequently cause a loose fit of the seals. In this article we will analyze in detail the stages of accessing internal components.
Before you begin active actions, you need to prepare the workspace. You will need a spacious area with good lighting, where you can easily place the unit on its side or move it away from the wall. Also stock up on a set of Phillips and flathead screwdrivers, pliers and, preferably, a magnetic washer for collecting small screws that tend to get lost at the most inopportune moment.
Preparation for work and safety measures
The first and most important step is to completely de-energize the device. Unplug the cord from the outlet and let the device stand unplugged for at least 15–20 minutes. This is necessary so that the capacitors in the electrical circuit have time to discharge and the refrigerant in the system is no longer under high pressure. Ignoring this rule can lead to electric shock or injury if the circuit depressurizes.
Free the interior of the chamber from all products, shelves and drawers. It is better to remove the glass shelves immediately so that they do not interfere with manipulations with the case and do not break if accidentally hit. If your model Oka has a No Frost system, do not forget to remove the plastic evaporator casing if it is removable without disassembling the back wall.
⚠️ Attention: It is strictly forbidden to open the sealed refrigerant circuit without the appropriate license and equipment. Repairs related to freon leaks should only be carried out by certified specialists with vacuum pumps and gas stations.
After emptying the chamber, carefully move the refrigerator away from the wall to a distance that allows you to walk around it on all sides. It is recommended to cover the floor with thick cardboard or old rags so as not to scratch the floor covering and protect the lower part of the unit body from damage. Rear wallwhere the compressor is located should be accessible for an unobstructed approach.
☑️ Preparation for disassembly
Dismantling the door and removing fittings
For convenient disassembly of the main body, it is often necessary to remove the door, since it significantly makes the structure heavier and interferes with maneuvers. In refrigerators Oka hinges are usually secured with bolts located at the top and bottom. Start with the top hinge: pry up the decorative plug with a flat-head screwdriver to gain access to the fasteners.
Ask an assistant to hold the door while you remove the top hinge bolts. After removing the fasteners, carefully lift the door, removing it from the bottom stud. Door weight can be significant, so proceed carefully so as not to damage the floor covering or drop the element on your feet. Place the removed door in a safe place, leaning it against the wall.
- 🔧 Remove all decorative trims and plugs from the hinges before unscrewing.
- 🚪 If the door has a closer or a complex mechanism, secure its position with tape before removing.
- 💡 Place all the screws and washers in a separate container, labeling which hinge they were taken from.
Now you can proceed to removing the handles, if the design of your model Oka involves their separate installation. They can be attached with screws from the inside or snapped onto plastic clips. Act without excessive force so as not to break the plastic, which may have become brittle over the years of use.
Removing the rear panel and accessing the compressor
The rear wall of the refrigerator Oka closes access to the compressor, capacitor and start-up relay. The panel is a thin sheet of metal, which is attached around the perimeter with self-tapping screws. Some older models may have hex bolts, so make sure you have the appropriate tool.
Unscrew all fasteners along the contour of the panel. Please note that there may be an additional smaller inspection cover located at the bottom, near the compressor. If your goal is only engine diagnostics, it may be enough to remove this particular hatch without dismantling the entire rear wall.
| Element | Mounting type | Tool | Note |
|---|---|---|---|
| Rear panel | Screws around the perimeter | Phillips screwdriver | Requires complete removal |
| Compressor cover | Screws or latches | Flat screwdriver | Partial access |
| Fan (No Frost) | Screws inside the camera | Phillips screwdriver | On the back wall inside |
| Thermoregulator | Nut and screws | 10mm key | Located outside or inside |
After removing the panel, you will have a view of motor-compressor, black condenser radiator and capillary tube. Be extremely careful: copper tubes are very soft and easily deformed. Any microcrack or bend will lead to freon leakage and the need for complex repairs with soldering.
Disassembling the interior of the chamber
If the repair requires access to the evaporator or temperature sensors located inside the refrigeration chamber, it is necessary to dismantle the rear wall from the inside. In refrigerators Oka with a drip defrosting system, this is a plastic panel behind which the evaporator is hidden. In No Frost models, there is also a fan and a defrosting heating element.
First, remove all the guides for shelves and drawers. Often they are what hold the side walls or prevent the rear panel from being removed. Carefully inspect the perimeter of the inner back wall for hidden screws that may be covered with plastic plugs or stickers.
⚠️ Attention: Plastic becomes extremely brittle at low temperatures. If the refrigerator has just been defrosted, allow the plastic to warm up to room temperature before removing, otherwise the latches may burst.
Carefully snap off the plastic latches, starting from one of the corners. Move consistently, without using sudden jerks. Under the panel you will see aluminum evaporatorwhich looks like a coil or plate. This is where ice coats most often form when the defrost system malfunctions.
Why can’t you pick the ice with a knife?
Aluminum evaporator tubes have very thin walls. One careless movement with a sharp object will lead to a puncture, instant leakage of freon and moisture entering the system, which will require expensive nitrogen purging.
Removing the thermostat and electrics
Thermostat in refrigerators Oka usually located inside the chamber (in the upper right corner) or outside, depending on modifications. To replace or check it, you need to remove the regulator handle by simply pulling it towards you and unscrew the fixing nut with a wrench.
After removing the nut, the thermostat block is carefully removed from the seat. It is important not to pull sharply, as there are wires connected to it, as well as (in some models) a capillary tube that is sensitive to kinks. Electrical diagram connections are usually shown on the inside of the cover or in the instructions, but it is better to take a photo before disconnecting the wires.
- 📸 Take a photo connecting the wires before disconnecting them.
- ⚡ Check the integrity of the insulation of the wires going to the compressor and the lamp.
- 🔌 Test the thermostat contacts with a multimeter before installing a new one.
The start-up protection relay and capacitor are located directly on the back of the compressor. They can be removed with a simple hand effort or a light pry with a screwdriver if they are secured with a bracket. These are frequently replaced elements, the failure of which leads to the hum of the motor without starting or complete silence of the unit.
Assembly and leak testing
Assembling the refrigerator Oka is carried out in the reverse order of disassembly. Make sure all wires are in their proper channels and are not exposed to moving parts or hot parts. Plastic panels should snap into place with a characteristic click, without gaps or distortions.
Pay special attention to installing the door. The hinges must be tightened evenly so that the door closes tightly around the entire perimeter. The gap between the seal and the body should not exceed 2 mmotherwise the cold will escape and the compressor will work without stopping.
After complete assembly, turn on the refrigerator. During the first hours of operation, listen to the unit: there should be no extraneous knocks, vibrations or whistles. If you have manipulated refrigerant pipes, it is better to check for leaks with a soapy solution, applying foam to the joints.
Frequently asked questions (FAQ)
Is it possible to disassemble the Oka refrigerator without removing the door?
Technically, this is possible if you have enough room to maneuver and an assistant who will hold the structure. However, removing the door greatly facilitates access to internal components and reduces the risk of damaging the hinges or the floor when moving a heavy case.
What tool is needed for disassembly first?
The basic set includes Phillips screwdrivers of different sizes (PH1, PH2), a flat-head screwdriver for prying up the plugs, pliers and a 10 mm wrench for thermostat nuts. For some models, a hexagon may be needed.
What to do if after assembly the refrigerator does not turn on?
First of all, check whether the connectors of the start relay and thermostat are tightly seated. Often during assembly they forget to snap the chips all the way in. Also make sure that the thermostat is set to the “on” position (usually a number above 1 or the word “Max”).
Do you need to wait after disassembly before turning it on?
If you did not touch the freon tubes and the compressor did not turn upside down, there is no need to wait. If the compressor has tilted more than 40 degrees, it is recommended to allow the oil to drain back into the crankcase for 2-4 hours before starting.