The device of the internal unit split systems: how to disassemble equipment for cleaning and repair
Cleaning the air conditioner should not be reduced only to the care of external elements. Dust penetrates everywhere, accumulates and interferes with the normal operation of the mechanisms. You can invite masters from the service center for maintenance, but many craftsmen cope with this task on their own.
In order to carry out all the maintenance work independently, you need to know the device of the internal unit split systems. We will tell you all about the design of climate technology. We will give recommendations according to which it was possible without fears to make out the unit, clean and collect again.
Basic elements of the internal block
Although the device of specific models from different manufacturers differs, the principal scheme according to which they collect such climatic equipment have common basic elements.
The internal block of a modern split system consists of:
- front panel;
- filter elements;
- fans and evaporator;
- drainage systems;
- indicator panel and t.P.
To correctly disassemble the device, you need to carefully disconnect individual elements in the correct sequence. First you should carefully study all the accompanying documents received when buying a device.
The fundamental device of the internal unit: 1- front panel; 2.3. filters; 4. fan; 5. evaporator; 6. blinds; 7. panel with indicators; 8. vertical blinds
They can find a lot of useful information on how to disassemble the internal unit of this split systems to perform maintenance activities. If for some reason the documentation is absent, it makes sense to look for the necessary information on the Internet.
A mesh filter designed for primary air purification entering the internal unit must be regularly cleaned from pollution using a detergent
In what cases is it required to remove the split system
People ask how to remove the air conditioner for various reasons. For example, if necessary, transfer it to another building, moving the owner, for repair, replacement of old equipment with new. If you know how to remove the air conditioner, this may turn out to be a useful skill that will save money. The main thing is to approach the case seriously, having previously studied the issue.
It would seem that an obvious and main reason for the withdrawal of the air conditioner modules is the complete expiration of the declared life of this technique.
Indeed, the climatic device has developed its term is best replaced with new. And this practice is found among the owners of working out air conditioners quite often.
Unboxing the TOSOT Mini Split AC
Not the best example of dismantling the external module of household split systems. This way of removing is a direct violation of safety precautions. Other methods of removing should be used
Meanwhile, it is also necessary to dismantle the split system if the main technological equipment, for example, is a refrigerator compressor. We recommend that you familiarize yourself with the diagnostic methods of the compressor and repair tips.
This can happen at any time, regardless of the established lines of operation. In any case, there is a need to dismantle the external unit of technology.
The air conditioner blocks are not excluded and with the aim of transferring the system to another installation site. For example, when the owner of a device for one place of residence to another is replaced by the owner.
Such a dismantling option is infrequent, but noted in everyday life. In any case, in order to independently dismantle the air conditioner without damage to technology, you need to own certain knowledge.
What you need to know before the start of work?
People who have set themselves the task of dismantling a split system with their own hands, at least need to know the device (diagram) of such a system. about the device of the internal block we talked here.
In addition, this moment should be taken into account: the working nodes of technology are under high pressure of the colad. gas, which is a health hazard.
Such a scheme must carefully study every potential owner of the air conditioner from those who plan to mount or dismantle the system with their own hands
Also, the subject of the study should be the electrical circuits of the air conditioning device, especially if it is assumed after the completion of the dismantling again to mount the device in another place.
Finally, the appropriate technical skills and the ability to own the locksmith, electric and special tools of the refrigerator are needed.
The production of works aimed at removing internal and external modules does not end only with turning off these modules and removal.
The main tool of the refrigerator, necessary both in the performance of the maintenance of household refrigeration equipment, and in the case of installation of the demonstration of the modules of the split systems
After disconnecting and dismantling, each of the modules must be reliably sealing along the lines of the circuit of the freon. This is done in order to exclude the entry of particles of dirt and dust inside the contour.
Relief of dismantling is facilitated by knowledge of the classics of mounting split systems. Traditionally, working modules. internal and external. have one to one to the other as close as possible, despite the fact that two components are separated by a wall (several walls).
The length of the contour line during classic installation, as a rule, does not exceed two meters. This is a characteristic indicator for household systems.
The circuit pipelines are placed in isolation (each separately), grouped with an electric cable and a working fishing line for a trimmer is built through the channel, connecting two modules.
Classic split system valve. In the picture valves are shown in the conditions of removed (twisted) brass caps. Inside the internal rods for the hexagonal key are clearly visible
The contour tube having a smaller diameter is a fishing line for a trimmer of the refrigerant by compressor. Accordingly, a larger diameter tube is a refrigerant suction line.
Each of the tubes connects to the external unit through system valves. over, one of the valves, as a rule, is a suction line, is necessarily equipped with a service port.
The so.called service port is a regular trumpet tap with a thread, on which the fitting hose or a fitting hose of the manometric station is wound up. This discharge (service port) is useful in the process of dismantling the system.
We prepare the tool: what can you refuse
The meaning of independent dismantling is to save money and time. But the system should be dismantled with accurate compliance with the rules. Otherwise, an expensive Freon will flow out, and you will have to invite a master to download a new portion.
The work will require a tool; Some of its varieties can be replaced with cheaper analogues, and you can (with some reservations) refuse some positions. Ideally, it is necessary to prepare the following tools:
- Low pressure manometer (manometric collector). With it, the pressure is determined after pumping the refrigerant into the external unit Therefore, it makes no sense to buy it for a one.time operation. If you pump without errors, you can do without a pressure gauge.
- A set of hexagonal keys. They are necessary for them, since with their help they unscrew the fittings on the block. For most household air conditioners, hexagons are used for 4 and 5 mm. The larger taps cost, as a rule, on semi.industrial models.
- Screwdrivers: flat and curly (cross.shaped), divorce key.
- Pipe cutter and plugs. If there is no pipeline, the usual hacksaw for metal is suitable (though it will not be so convenient).
The dismantling budget depends on whether it can be made from a window or balcony; On the upper floors you will need equipment for industrial mountaineering. Safety equipment is a separate consumption article, and it is not worth saving on it. It is also important to understand that you can’t do it alone with work. To correctly dismantle the air conditioner, you need an assistant.
Dismantling of a working air conditioner (with freon)
Below are the options for partial or complete dismantling of working equipment. Such a procedure is necessary when moving or, as in my case, during repair. The meaning of the entire procedure is to pump the entire freon into the external unit and save it there with minimal (uncritical for functioning) losses. This can be done in three ways.
A method without a pressure gauge
It is necessary to collect the refrigerant in the heat exchanger of the external unit. The following operations are performed for this:
- After starting the air conditioner (in the room), they move to the outer unit and remove the protective casing at the point of the tube entrance.
- Unscrew the plugs (caps) of service cranes that are open in working condition. Cranes for a hexagon become affordable.
- Before the next actions, it is necessary to make sure that the air conditioner compressor works (which is determined by the characteristic noise of the external unit or by cold cranes).
If you are dismantling in winter, and the temperature is lower than you can install on the remote control, the compressor may not turn on, as it will consider that the room is quite cool. In this case, you will have to go to the trick: open the cover of the inner block, remove the nets and find the temperature sensor. The assistant will hold the sensor in his hand, warm him and artificially overstate temperature indicators.
Service cranes have different sizes corresponding to the dimensions of the absorption (thick) and discharge (more thin) tube. In order to pump the freon into the external block of the air conditioner, the following operations are performed:
- After waiting a few seconds (until the entire refrigerant is in the outer block), the second crane is blocked.
- With the help of a hexagon, a tap with a thin tube is twisted (clockwise, until it stops). In old units with worn.out seals at this moment, Freon may begin to go out. Try to screw the crane as quickly as possible to minimize losses.
- After blocking a thin tube, you will hear that the compressor began to work with the load. This is because the Freon’s supply to the inner block has stopped, but the second crane is open, and the compressor continues to pump out the remains of the refrigerant from the evaporator of the internal block.
- Now you need to wait for 20-30 seconds, and then tighten the second crane (on a thick tube). Waiting time depends on the length of the highway: the longer it is, the longer you need to wait. With a length of 3-5 m, 20-30 seconds are enough, for a length of 7-10 m, 40-50 seconds are enough.
- After that, as the whole Freon was in the outer block, it is advisable to turn off the air conditioner as soon as possible so as not to overload the compressor (it is convenient to entrust the assistant).
- Copper highways are removed, after which they are mandatory without fail so that dust does not get into the evaporative camera.
A method with a manometer
The difference is that after unscrewing the plugs to the taps, the pressure gauges are connected. Connection must be carried out extremely carefully (in gloves), as the refrigerant will come out under pressure. After connecting on the pressure gauge, the operating pressure of the system will be fixed.
In the process of blocking the tap of a thin tube, you will observe a decrease in pressure on the manometer scale. Using the device, you can track the drop in pressure to zero (and not navigate in time), and then block the thick line crane and immediately turn off the air conditioner.
There is another way to collect Freon in the external unit, but it is associated with the losses of the refrigerant. If there is no way to start the unit (for example, during frost outside the window), then they simply close both taps (without starting the device). Part of the gas will remain in the tubes and in the inner block, and it will have to be struck while unscrewing the nuts.
Most of the gas will remain locked in the external unit, but perhaps a refueling (or refueling) will be needed by a refrigerant. If the device is designed to work with Freon 22, then you can limit yourself to refueling.
On the intricacies of preserving the freon before dismantling in the following
Features of work in winter
The process of dismantling the air conditioner in winter at temperatures below.5 degrees are not recommended. The reasons are of the following in nature:
In the case of accelerated, the need to warm up in the outer block all the fitting. To preserve the parts of the freon, both valves are closed and plugs are removed. The tubes are unscrewed from the fitting, and the remaining part of the refrigerant goes into the atmosphere. Further work is carried out in accordance with the instructions.
If the air temperature is negative, but higher.5 degrees, then dismantling is carried out in the usual order. In this case, a prerequisite is the presence of a pressure gauge.
Air conditioning dismantling. a complex process. However, if you have sufficient knowledge, it can be carried out with your own hands. Better to do this in the summer. Before starting such a procedure, you should purchase tools and manometer. The presence of the assistant is desirable, since the equipment is heavy.
Conclusions and useful videos
Solving the problem of removing (dismantling) of a household split system with your own hand-a completely implemented process. The main thing is to have an idea regarding the device of such equipment and how its installation is performed. Obviously, the dismantling has to be performed in the reverse order.
Engage in installation, replacement, repair and maintenance of split systems and repeatedly removed the equipment and put it back? Share your secrets of dismantling with beginners in this matter. leave the recommendations below this article.
If you first took up the shooting of blocks of the split system and you have questions that we have not considered in this material, ask them to our experts and other visitors to the site.
Nuances when removing split systems of different types
If the dismantling (change of) simple split systems is relatively simple, then more complex devices, for example, channel air conditioners, are much more difficult to transfer them. They have a large set of components and weight, require special approaches when embedded in the interior of the premises. The electric fishing line for a trimmer is de.energized and disconnected until the hydraulics are removed, and not after it. Before installing the air conditioner in a new place, it is necessary to blow out and deceive the freon contours of both blocks. The walled tough communications simply cut off.
If the hole is quite wide to pull them out, then they begin with the most easy to pull out parts. Then the rest are removed.
A disassembled split focus cannot be stored for a year or more. Over time, Freon will disappear all. Inside, through the sagging gaming of the valves, air with moisture will get and oxidizes pipelines. In this case, the entire circuit must be replaced. Often there are no details for the old air conditioner in a single master, t. to. The entire line of compatible models has long been discontinued, and the owner is forced to buy a new split system.
Dismantling of the channel air conditioner
Dismantling the channel split system begins with the dismantling of the air ducts. Work begins where air ducts are reported with air in cooled rooms. Having removed the channels, they begin to extract indoor and street equipment modules. Enough the air conditioner after pumping Freon into a street unit. valves holding it must be overlap and isolate with plugs. At the end of blowing the system, the power cable is disconnected.
What you need to know about the air conditioning refrigerant?
Unfortunately, the breakdown of air conditioners, as well as other equipment, is not uncommon. Therefore, the potential master, even if the “home” will need theoretical and basic information regarding the same freon if he plans to install, dismantle or repair the air conditioner.
Modern air conditioning devices, domestic or office, use a refrigerant, the brand of which is indicated in the air conditioner passport, as well as directly on the equipment housing.
The installation procedure of household air conditioning through the eyes of specialists looks like a fairly simple thing. Even simpler they consider the dismantling of the air conditioning system
Therefore, the home master is the first thing you need to know is, of course, a brand used in the refrigerant system. The Freon brand is determined by reading information on the technical plate of the device, which is always present on the external module case.
What is this information for? For the correct execution of installation (dismantling) and commissioning work.
The so.called “nameplate” of the air conditioner is a technical plate on the external module case, where the brand used by the refrigerant system is spelled out. In this case, a brand is indicated on the plate. R410A
Freon is a very fluid substance. That is, in the presence of even a slight violation of the tightness of the system, this refrigerant completely comes out. This class of substances refers to chemicals that can destroy the ozone layer of the atmosphere. Accordingly, the release of freon into the atmosphere is unacceptable in principle even in small volumes.
When installing a new air conditioner, the danger of refrigerant leakage is minimal, but the process requires a certain technological approach. However, a completely different situation in the dismantling of the system. We will talk about how to remove the air conditioner so that Freon does not flow out of it.
Dismantling of the air conditioner while preserving the freon
Consider two options for dismantling the household split systems with the full preservation of the freon, with which potential users of air conditioners have to face:
Both options are the reality of the existing practice of operating household and other air conditioners.
Dismantle the household air conditioner is quite acceptable. However, for the performance of such work, some basic knowledge is required regarding the device and operation of air conditioning systems
Top 5 Best Split AC (Air Conditioner) In 2022
By the way, the second option, when you have to dismantle a faulty machine, is found even more often than the first. Workers’ air conditioners are dismantled quite rarely, allowing the machines to work out all the deadline declared by the manufacturer.
Option #1. dismantling of working equipment
This case of dismantling is usually associated with the transfer of the user to another place of residence (work, etc.P.). True, sometimes they are going to dismantle the technique in connection with the replacement with a more perfect (modern) model.
Consider the main stages of dismantling the system while maintaining a refrigerant.
Stage #1. Freon pumping out of the system
Whatever the goals of dismantling the working equipment, the air conditioning must first be “preserved”.
With a working (completely serviceable) air conditioner, to complete the items marked in the list is relatively easy. It is enough to pre.pump the freon present in the evaporator (detail of the internal module) and in copper tubes connecting the internal module with the outer block.
Freon pumping on the working system does not require special equipment. Often, it is enough to have a manometric station for control or simply rely on the operation of a low pressure relay
It should be noted: in this version of the refrigerant pumping is performed in completely local means. in other words, directly by the compressor of the air conditioner.
User actions come down to the following:
- Block the freon supply valve into the evaporator (for a smaller tube diameter).
- Leave the valve open on the vapor withdrawal line (for a larger tube diameter).
- Turn on the air conditioner in the “cooling” mode.
- Wait for the moment to turn off the system automation (by low pressure).
- Close the valve on the vapor withdrawal line.
So, in general terms, there is a technology that shows how to properly remove the household air conditioner while preserving the freon in one of the system modules (external module).
After the execution of such a procedure, it remains only to disassemble the installation of air conditioning to separate modules for transportation to another installation site.
Stage #2-Dismantling for modules of household split systems
Next, we consider the sequence of actions to divide the air conditioner by modules. But this is subject to the performance described above the Freon pumping procedure by the compressor.
So, it is recommended to connect a manometric station on a fitting specially designed for refueling/pumping freon. This service port (name for standard specification) is part of the design of the locking valve of the gas line (a fishing line for a larger diameter trimmer). The fitting is closed with a brass screw plug, which must be pre.removed.
Classical execution of locking reinforcement and service port on the example of a standard household split system. Valves open/close by the hexagonal key
Connection of the manometric station to the service port is performed through the pressure gauge (manovakuumometer), designed to control the side of the low pressure. On branded devices, this part of the equipment (including the transition hose), as a rule, has blue coloring. At the same time, the shut.off valve of the blue manometer of the station should remain in the “closed” position.
Service port (fitting) of a low.pressure line has a built.in check valve. When connecting a hose equipped with a special threaded head to the fitting, the check valve opens due to the pressing of the crossbar on the valve rod. Therefore, connection/disconnecting to the service port (winding the head) should be carried out quickly, but accurately.
Manometric station. a device for monitoring the pressure inside the working lines of the air conditioning installation, as well as to control the processing/pumping process of the freon if necessary
After connecting, the pressure gauge will show the presence/absence of pressure in the line. If the pressure is absent, you can safely turn off the pipelines brought to the outer unit, turning off the unit mounting nuts. Otherwise, you should repeat the refrigerant pumping procedure by the compressor.
Then, the electricity, which was brought to the outer and internal blocks, is disconnected, as well as electrical eyeliner at the terminals of the modules. In this case, it is recommended to numb electric conductors if it is supposed to use old wires with new installation.
Stage #3. extracting blocks from installation sites
The next stage of the operation of dismantling a working household system is a purely physical. It will be necessary to remove the air conditioning modules (external and internal) directly from the installation sites.
It is permissible to remove the external module of small weight (up to 50 kg) located at a low altitude by hand. with the forces of two people and using stairs, if necessary, if necessary. At a height, if the external module is located next to the window, manual removal of the device is also quite possible. Although in this case it should be remembered that this is a rather risky and dangerous event.
How to work as a manometric station
The station case is a block. Two pipe is located on its lateral surface. Two different tubes come from them.
- The one that is thin provides the transfer of liquid refrigerant from the capacitor to the evaporator.
- Thanks to the thick tube, gas-fraon enters the capacitor block.
Each fitting has a special valve. It is needed in order to block the feed of the freon.
Filling the capacitor by freon is carried out according to the standard system.
- Protective covers of pipes and nipples are dismantled.
- Nipple connects to the collector.
- The air conditioner turns on and the maximum cooling mode is adjusted.
- After that, you should wait 4-5 minutes and overlap the valve of the pipe, which is responsible for the supply of a liquid freon. Given the action interrupts the supply of refrigerant into the evaporator.
- Pressure control is carried out using a pressure gauge.
For the last stage of working with a manometric station, a assistant is definitely needed. The fact is that as soon as there is an indicator on the indicator.1 MPa, you must immediately block the gas fitting. If you delay, then the compressor pump begins to work at idle, and this will negatively affect the performance of the entire air conditioner as a whole.
How to disable electric circuits
The last step before dismantling must be disconnected by electrical circuits. This can only be done after removing the residues of the refrigerant. Finding a shutdown site is very simple. most often it is on the back of the external air conditioner unit.
If you can’t find the diagram, or it seems too complicated, then you should sketch the whole scheme before disconnecting. Only those conductors that go from the inner module to the external unit should be disconnected. In addition, it may be necessary to dismantle network eyeliner. It is quite difficult to do this, as it is inside the building.
After everything is disconnected, you can start dismantling an external block from brackets. If everything is done according to the instructions, then no problems with the subsequent installation in place and turning on will arise.
Dismantling of the air conditioner by steps
Dismantling while maintaining the performance of a dismantled air conditioner is as follows:
The following is the instructions for the dismantling of the wall air conditioner.
To remove the outer block of the air conditioner, first disconnect the tubes.
- Unscrewing the uniform nuts that press the opened edges of the tubes to the flanks of the outer block fittings. And in place of the nuts, pre.prepared caps are screwed up. Dignity. remains whole tubes. Disadvantage. there is a high risk of air compressor.
- Copper tubes are cut with sides (from the fitting about 15 cm). Bend the edges and clamp (cheap) using a vice. Disadvantage. tubes in a new place must be set new. Dignity. the operation passes quickly and the probability of air dust entering the air is much lower.
Note. It is necessary to roll the other trimmed edge of the tube to protect the evaporator of the inner unit.
The next step is to turn off the cables (signal and power), remove the block mounts to the frame on the outer wall and raise it into the room.
One of the situations when it is necessary to remove the external unit is to replace the air conditioner compressor. And in this case, the dismantling algorithm is slightly different. The differences are as follows:
- Freon must be completely removed from the system. The right way is to assemble it to the cylinder using the Freon pumping station. Incorrect, but simple. to lower it into the atmosphere (if the compressor replacement takes place in the warm season and the air temperature above the pile of the freon at normal pressure).
- There is no need to make the tubes. after installing a new compressor, the system is “pumped out” with an external vacuum pump.
It is impossible to replace the air conditioning compressor on his own. In addition to a vacuum pump and a manometric station, you must have a gas burner to disconnect from the system of the absorption and exhaust nozzle of the old compressor, and then solder the new unit to the system. And even if you rent equipment, you need to have skills in handling it.
You can remove the block yourself, and to replace the compressor it is better to invite a professional.
Most household split systems have a wall-mounted internal block (although there are other accommodation options). But with the exception of the channel air conditioner, the remaining species dismantle the general principle.
To remove the internal wall block, they come as follows:
- Remove the lid of the case;
- disconnect cables and wires;
- Copper tubes are cut and checked, which go to the evaporator of the inner unit;
- Cut the drainage pipe, drain condensate;
- The clicks of the hull attachment to the mounting plate are “eliminated”;
- remove the block and unscrew the plate from the wall.
Dismantling in winter
Air conditioning can work in winter. And not only as a heater, but also in cooling mode (for example, in the rooms where servers stand).
Note. It is possible to collect a freon in the capacitor of the outer unit only when working in cooling mode. in heating mode, it already works as an evaporator.
The peculiarity of work in the winter in this mode is that there is the lower temperature limit, which is affected by the type of refrigerant, the type of air conditioner and additional equipment. This dependence is still related to the features of the compressor device. it is oil, and the oil thickens at low temperatures. In ordinary air conditioners, the lower operating temperature lies from 5 ° C to.5 ° C, in inverter-up to “minus” 15-25 ° C.
Before dismantling the split system, these nuances must be taken into account. And if the temperature is lower than the specified limit, and the air conditioner is not equipped with a “winter kit” with a heated compressor crankcase, then to remove the outer unit, you need to use the pumping station and the collection of the freon (it has an articulated compressor).