Rm2048xe enatel DIY repair

We present to the Russian market a new rectifier module RM2048XE (2000W, 48V) with 94% efficiency from the New Zealand company ENATEL (Enatel) - the best way to save energy at a communication facility.

Rectifier module RM2048XE (2000W, 48V) 94% efficiency

Enatel New Zealand Introduces Forced Cooling Rectifier Modules RM2048XE (2000W, 48V), hot swappable. Rectifiers have the greatest Efficiency 94% and the highest power density on the market. The modules provide effective energy savings compared to other manufacturers of 91-92% efficiency, thereby helping to reduce costs, balancing CAPEX and OPEX. The XE series rectifiers are designed for use in today's telecommunications networks, offering unrivaled specific performance for compact on-site use.

The RM2048XE is the highest performance rectifier module to replace the outdated RM2048XP.

SPECIFICATIONS AC input voltage Rated voltage: 230V Voltage range: 85-300V (output power variation beyond 175-275V) Frequency: 45-65Hz Power factor:> 0.99 Efficiency:> 94% Input fuses: HRC fuses (L and N) Maximum input current: 12A Input protection: Overvoltage shutdown over 300V Inrush current: 15ms for 20% drop in output voltage Startup time: Startup delay 1 second (varies with AC input voltage),
Full power output with 6 seconds delay (varies according to DC output voltage) Output protection: Fuse with diode, Overheat protection, Output current limitation, Overvoltage protection Ripple and noise:

Installation of DC power supply ES-24,48 / 266, consisting of:

- Cabinet 1800x600x600mm with three shelves for placing Coslight 6-GFM-150X batteries

- General input automatic machine 3pol. 63A including varistor

- 8 places for installation of rectifiers (maximum output power 16kW)

- Control module SM36 with I / O board with inputs for battery symmetry monitoring

- Battery machines 3x125A

- Automatic load break switches of high priority 1х63А, 1х40А, 1х32А, 2х20А

- Automatic low priority load break switches 2x100A, 2x63A

- A set of cables for connecting 3 groups of batteries

We present on the Russian market a new rectifier module RM2048XE (2000W, 48V) with 94% efficiency from the New Zealand company ENATEL (Enatel) - the best way to save energy at a communication facility. Rectifier module RM2048XE (2000W, 48V) with 94% efficiencyEnatel company (New Zealand) ) introduces RM2048XE (2000W, 48V) forced-cooling rectifier modules, hot-swappable.

We present to the Russian market a new rectifier module RM2048XE (2000W, 48V) with 94% efficiency from the New Zealand company ENATEL (Enatel) - the best way to save energy at a communication facility.

Rectifier module RM2048XE (2000W, 48V) 94% efficiency

Enatel New Zealand Introduces Forced Cooling Rectifier Modules RM2048XE (2000W, 48V), hot swappable. Rectifiers have the greatest Efficiency 94% and the highest power density on the market. The modules provide effective energy savings compared to other manufacturers of 91-92% efficiency, thereby helping to reduce costs, balancing CAPEX and OPEX. The XE series rectifiers are designed for use in today's telecommunications networks, offering unrivaled specific performance for compact on-site use.

Finding out, or at least seeing a photo of how a modern sewing machine works, is not only informative, but also useful. Be sure to read this series of articles on modern home sewing machine repair. A visual representation of the device of a sewing machine will help you make the right choice when buying it, and also make you take more care of it later.

It is quite difficult to disassemble a modern sewing machine on your own, but in most cases you will not have to do this. But still, there are cases when you have to disassemble the sewing machine yourself. For example, when you need to replace an electric drive, a line does not form, a needle breaks, etc., and there is no way to go to a workshop, because your city or village simply does not have one.

In this article, you will learn how to properly disassemble (remove) the plastic covers of a modern household sewing machine of the usual inexpensive model from Brother, Janome and any other company.

Almost all models of modern economy class household machines are assembled in China, and therefore, in order to disconnect the plastic parts of the case, you only need “Phillips” screwdrivers. One screwdriver should have a Phillips head for medium-sized screws and one slightly more powerful, maybe even a flat head.

Screws for machines of European assembly (sometimes Taiwanese) often have some peculiarity. They can be unscrewed only with a special screwdriver (asterisk) with a special slot. First, look at which screwdriver you can use to unscrew the case mount, you may have to buy it from the store specifically for this.
This photo shows the types of modern screwdrivers and screws. By the way, we will disassemble the sewing machine in the foreground. It is called "Dragonfly" - China. Its body is assembled on ordinary Phillips screws.

First remove all non-tooling parts. Start at the removable table, then detach the foot. Remove the stitch plate. To do this, use a flat screwdriver to unscrew only one screw (sometimes two). Naturally, you need to pull out the bobbin and the plastic hook or bobbin case, remove the bobbin and so as not to injure yourself, it will not hurt to remove the needle.
Now you need to unscrew the screw indicated by the arrow in the photo and carefully remove the front cover. There is a special latch at the top of the cover, you need to disconnect it before “pulling out” it by force.

All screws do not need to be stacked together. When you start assembling back, it will be difficult for you to determine which screw and where it was. Therefore, mark them in any way convenient for you. For example, you can put a piece of paper with a mark next to each screw (s).

Now we will begin to disassemble the sewing machine, or rather to disconnect its plastic case, which consists of two halves. But first remove the hook cover. To do this, unscrew the screws indicated by the arrows. Just like the front cover, this part, in addition to screws, is also attached to latches. To loosen them, you need to insert a screwdriver into the slot and try to gently slide the cover to the left. On the back of the handwheel, remove the stitch selection knob. Just pull it firmly to the right. Immediately notice how it stood to make it easier to install it back.

And two more types of attachments are located at the bottom of the machine body. In many models of sewing machines, the rubber feet in the lower part of the body are also the attachment of the plastic body to the metal bed of the sewing machine. In any case, this model of the machine has two rear legs as such an attachment. But since we will only be removing the front part of the case, unscrew only one leg (top right).

For all sewing machines of this class, it is imperative to release the fastener indicated in the photo with the letter (A). Moreover, both screws do not need to be unscrewed, it is enough to release only the front side cover. In this case, you need to unscrew the top screw.

The very last, but most inconspicuous screw (B) remains. It is located in the depths of the front of the machine. Even at high magnification, it is not visible in the photo. The screw that you can see so clearly does not need to be unscrewed. This is the upper thread tensioner attachment. By the way, it remains in place after removing the cover. Consider this point and do not try to film it.Actually, unscrewing the screw itself is not difficult, it will be much more difficult to put it back. Therefore, hold the screwdriver on the magnet for a while, this will help you later.

Now you can remove the front cover, although it should be noted that other models may have an additional mount, but the principle is about the same. Look carefully, maybe your machine will have an additional mount at the bottom of the case. It happens that the fastening of the covers is hidden by plugs. Use a knife blade to pry the plug on the back of the machine and make sure there is no additional attachment there.

By the way, it is with the help of a knife that you will have to remove the cover, since in addition to screws, there are latches on the ends of the covers. Place the knife blade between the ladles of the case and gently try to move them apart by displacing the latches. Only now it is difficult to determine at once where they are located, so please be patient if you really decided that you definitely need to disassemble the sewing machine.

This is approximately the "picture" you will see when you can disassemble your sewing machine. Probably, it should be noted that the most difficult thing is not to find all the screws holding the covers to the case and to each other. It is very difficult to carefully remove the covers, to separate their latches. If you do it hastily, you can damage the plastic, which will ruin not only the appearance of the machine, but also interfere with the work. Rough spots in the sleeve area of ​​the machine will cling to fabrics and even form puffs.

It is important to firmly decide whether you need to disassemble the machine with your own hands or not. If there is no other option, then be patient and attentive. Well, for what it is necessary to disassemble it, we have already mentioned above, but we will understand it in more detail in other articles.

The device of a modern sewing machine
How a modern household electric sewing machine works. Major malfunctions of components and mechanisms.

How to disassemble a typewriter and replace an electric drive
Sometimes it becomes necessary to disassemble the sewing machine, or rather remove the plastic case of the machine in order to gain access to some units. Such a need arises very rarely and it arises only when it is necessary to replace the electric motor of the sewing machine or the drive belt.

Sewing machine electric drive
Just like the pedal, the electric motor does not need to be repaired by yourself. Moreover, there is nothing to repair there. The engine is either running or not running. If it does not work, and you know for sure that there is no other reason for this, then it needs to be replaced.

Bobbin winder
Such a "trifle" as winding thread on a bobbin often creates a lot of inconvenience. For some reason, it is not always possible to do this quickly and “without problems”. Let's see why it is sometimes difficult to wind the thread on a bobbin and what needs to be done to eliminate minor damage to the winder.

Sewing machine Veritas Rubina
The opinion of the master about which sewing machine is the best. Details about the used Rubin sewing machine and other old models of the Veritas brand.

How to properly lubricate the overlock
Sometimes, you need to remove the overlock covers and lubricate all rubbing parts inside the case. What you need to pay attention to and how to do it yourself.

How the sewing pedal works
We do not recommend repairing the sewing pedal yourself. We only give advice on how to prevent it from breaking. The most common cause of pedal breakage is long cables.

Do you have a sewing machine and love to sew? Then this site is for you. Professional craftsmen will tell you how to make minor repairs to a sewing, knitting machine. Experienced technologists will share the secrets of tailoring. Review articles will tell you which sewing or knitting machine to buy, a mannequin iron and many other useful tips you will find on our website.
Thank you for viewing the entire page.

Many of us have forgotten about various stoves, hobs and completely trust the process of cooking microwave ovens.And this is not surprising at all: microwave ovens take up little space, have a rich set of different functions and significantly save time. Naturally, we get very upset when our microwave breaks down. The reasons for the breakdown and malfunction can be different. Consider what breaks down most often in a microwave oven. Often, if a microwave oven breaks down, it is necessary to contact a specialized master. After all, this is not the simplest device, so the repair is rather complicated. But in fact, the design of a microwave oven is elementary and includes only a few basic elements. If you first familiarize yourself with frequent breakdowns, then repairing the microwave on your own will not be difficult.

Although the design of a microwave oven contains a lot of elements, most of them do not play a special functional role. To repair this device, you only need to know the basic elements of the circuit that ensure its operation. Among them:

1. Magnetron.
2. Transformer.
3. High voltage fuse.
4. Rectifier diode.
5. Capacitor.
6. Control block.

Arrangement of elements in the microwave

It is easy to distinguish them, because outwardly the design is not very complex. The magnetron is always installed in the middle, directed towards the food warming unit. The transformer is located under it, representing a massive box with a protruding coil. The capacitor, diode and fuse are located to the right of it, and the control unit is often located near the input panel.

When the device is turned on, a voltage of 220 V is supplied to the transformer. Passing through the primary and secondary windings, a current of 2 kV is already flowing out of the element. Further, the negative half-wave goes to the diode, and the positive one charges the capacitor, which again leads to a twofold increase in voltage. After that, the generation of microwaves by means of a magnetron begins. The power of the magnetron is regulated by the control unit.

Therefore, in the event of a breakdown, it is worth paying attention to these elements. They carry the greatest load, so they are often the problem.

When disassembling the microwave, be sure to disconnect it from the mains.

Search for breakage in a microwave oven is based on "symptoms". This allows you to gradually eliminate possible causes and find the real one. So, if the oven does not turn on at all, then it is worth checking the following points:

• The integrity of the power cord.
• Door position and closing system.
• Mains fuse and thermal relay status.

In the first case, the situation is elementary - there is no power supply due to damage to the power cord. A similar situation occurs when the outlet is damaged or overloaded. In this case, it is enough to replace this element, everything is in order with the microwave itself.

Next, it is worth checking the operation and position of the door. The fact is that the operation of a microwave oven when the door is open is dangerous for others. Therefore, the design provides for the possibility of operation only when it is completely closed. If a latch, a locking system or a checking element is broken on the door, the protection system will not allow the device to start.

The last points also concern the protective systems of the oven. The fuse prevents damage to the device due to power surges, and the thermal relay provides a complete shutdown of the system when the door is open. Both can fail, it is quite easy to replace them.

It is also worth checking the voltage in the network and the number of devices connected to the outlet. The microwave oven is very demanding on power supply, therefore its slight deviations can interfere with the operation of the appliance.

Procedure if there is no heating Fuse faults

Most models suffer from common problems and have similar, typical faults. For example, if the microwave works, but does not heat, then this indicates a malfunction of the capacitor, diode or magnetron.To repair a microwave oven yourself, you will need a simple set of tools: pliers, wire cutters, a screwdriver, an adjustable wrench and a five-spanner wrench, as well as a soldering iron with the necessary equipment.

When repairing a microwave microwave yourself, you should remember about safety measures. The two most important hazards in microwave oven repairs are high voltage in oven components and microwave radiation. Do not turn it on if the door is defectively locked or the mesh on the viewing window is damaged. Do not make independent holes in the case and introduce any conductive objects into the units and elements of the furnace. Never touch internal parts and assemblies while the microwave is in operation. Be sure to use a tester or other electrical meter to measure AC and DC current.

If the above reasons are not confirmed, then you need to disassemble the device for troubleshooting. Before that, be sure to turn off the oven from the network and wait a couple of minutes.

Fuse

What should you look for when searching for breakdowns? There are several basic elements that often fail:

1. Circuit breakers.
2. Capacitor.
3. Diode.
4. Transformer.
5. Magnetron.

Photo of a microwave condenser

These elements are directly involved in the operation of the device and were mentioned earlier. First you need to check the health of the fuses. Their breakage can be seen immediately, because during combustion, the conductor inside is destroyed. If this did not happen, then it is worth looking further.

For further verification, you need to take a multimeter, because outwardly it is extremely difficult to find a breakdown on the remaining parts. To check the capacitor, you need to switch the device to ohmmeter mode, and then connect it to the part. If there is no resistance, then the part must be replaced.

High voltage diode

It is impossible to check the high-voltage diode with a tester. It is recommended to replace it in case of breakage of other parts, because often the blow falls on it. It can be checked in a slightly different way - by connecting it to the network on the way to the light bulb. If the light is weak or blinking, then the part is working properly. If it burns brightly or does not turn on at all, then the diode must be replaced.

Next, the transformer is checked.

Photo of a microwave transformer

It is important to observe safety precautions, because

Photo of microwave magnetron

this element is able to hold a charge for a long time. It will take several minutes to discharge a serviceable transformer, and if the discharge resistor breaks down, it will take much longer. It is worth discharging it on the case or not touching it at all if there is no experience with such a technique.

Next, the transformer windings are checked. It is necessary to remove the terminals and check the terminals of the device one by one with an ohmmeter. First, the primary winding is checked, for which the rate varies from 2 to 4.5 ohms. For the secondary winding, the limits are 140 and 350 ohms. It is also worth checking the filament winding by connecting the terminals leading to the magnetron to the multimeter. The norm here varies from 3.5 to 8 ohms.

All previous tests have failed, then the problem may lie in the magnetron.

To test the magnetron, just connect the tester to its power terminals. The tester switches to ohmmeter mode. If the resistance is 2-3 ohms, then this means a breakdown of the device. The situation is the same if the tester reads infinity. In both cases, the device must be replaced.

These items are the most common culprits in microwave oven breakdowns. However, the failure of the device is often associated with other malfunctions, such as problems with the electronic control unit, timer and other electronic parts. Here, simple checks with a multimeter will not help; the help of a qualified technician is needed. Although it is much easier to simply replace a part if you are sure that it is broken.

There are frequent cases of breakage associated with the destruction of the cap on the magnetron.The thin aluminum body simply cannot withstand stress and is destroyed by microwave waves. This problem often occurs in older devices that are more than a few years old. The obvious symptoms in this case are noise and sparks during the operation of the device.

To check, it is enough to remove the transformer, because the cap is located towards the food chamber. If the cap is destroyed, then there are 2 options:

• Cap replacement.
• Flip the cap.

The first option is a priority, it is enough to order a replacement or return the magnetron for repair. The second option is considered a temporary alternative that allows you to extend the life of the device indefinitely. It is enough just to rotate the cap 180 degrees around the axis, because the load falls on only one half.

Repairing a microwave oven is a feasible task for a novice electrician. If the problem lies in the breakdown of one of the constituent elements of the furnace, then the simplest and correct solution is to replace it. The bottom line is that most of the parts of this device cannot be repaired, but only completely replaced with a new one. This especially applies to fuses, diodes and capacitors - the main reasons for the failure of the device.

Parts replacement is carried out in several steps:

1. The microwave is disconnected from the network.
2. The transformer is discharged (5 minutes).
3. The terminals are disconnected from the defective part, it is removed.
4. A workable part is connected to the same place.

There are two important factors to consider when replacing a part. The first is schema compliance. It is important to remember that each part has its own characteristics, selected for the performance of the entire electrical circuit. If, after replacement, this nuance is not taken into account, then this leads to new breakdowns. This is especially true for the transformer and capacitor.

The second important factor is the connection of the part. It is necessary to connect the replacement correctly, keeping the previous arrangement of the terminals. Reconnecting the device in reverse order can damage it, as well as several other parts in the system.

This will restore your microwave in most cases. If the breakdown is related to the electronic part of the device, then you should contact the professionals. This will ensure quality repairs and prolong the operation of the device for a long time.

The most common malfunction is the failure of the waveguide cover in the microwave oven chamber. This is caused by splashes from cooking. This starts sparking between the magnetron antenna and the protective cover. Untimely removal of burnt products leads to local burnout of the lid and to complete destruction.

Local burnout of the lid mica plate can be removed with alcohol or solvent 646. It is enough to gently wipe the burnout area.

Burning out mica

If the mica plate of the lid is clearly in poor condition, is greasy or begins to paint, then it should be replaced. Removing the diffuser plate is a snap. This can be done using an ordinary sharpened knife. Usually, the mica plate is attached with a self-tapping screw or rivets. Carefully place the old plate on the new template and cut out a new one. The best way to do this is with a knife - you can break the mica with scissors. We make holes in the new plate with a sharp screwdriver and process the edges of the fields of the plate with sandpaper. We install the new plate in place of the old one.

The question often arises, how to replace mica for microwave ovens? For these purposes, any dielectric with a similar dielectric constant is suitable. For example, PTFE or Teflon.

Common breakdowns in a microwave oven are also malfunctions associated with other elements of the oven. For example, such as the keyboard of the oven control unit, the microwave oven electronic control unit and the dissector. Less often, the high-voltage capacitor and transformer, the microwave waveguide plug and the rotating pan fail. The power supply and magnetron of the microwave oven are subject to wear and tear.

Knowing how to troubleshoot microwave ovens can save you significant repair costs. However, if you do not know how to repair the microwave yourself, then it is best to contact a specialist. Specialized service centers will help you to repair the microwave microwave. In addition, watch the video on microwave repair, perhaps there is exactly that breakdown that will help you fix your beloved household assistant.