Omron tonometer DIY repair

Any thing can be subdued at home, if you are firmly convinced that your hands are growing from the right place. Otherwise, in order not to spoil it, it is better to contact the service center.

But we can fix some defects ourselves. It's not as difficult as many people think. And no need to look for where the service center is located. Our article will help you fix minor breakdowns.

Lack of sealing on the cuff.

Since we are dealing with cabinet equipment, it is necessary to remove the cover of the tonometer. Air is supplied directly from the compressor to the cuff. Do not rush right away, remove the cover by unscrewing the visible bolts. It is worth looking over the device once again for hidden latches.

As soon as the cover is removed, immediately pay attention to the branch pipe connected to the cuff, rubber rings. Perhaps the clamp on the cuff has become unusable; it is also necessary to visually check the hose for cracks. If everything is ok, then put it back and check it.

If the damage is in the cuff itself, then you can simply coat the seams with a sealant.

Particular attention, during the repair of an automatic medical tonometer, should be paid to the rubber O-rings of the device, they can both work and become clogged. If everything is visually correct, then check its performance. If the pressure does not build up, then you should already pay attention to the engine.

Inspect the cuff material. With prolonged use, it could become unusable, and does not fit tightly around the hand. The Velcro is damaged, which is easy to replace with a new one or to buy the cuff completely together with the hose.

In pharmacies and service centers, you can buy cuffs for the tonometer microlife, omron, ande, b.well and other popular models. For this, it is important to know which part is right for you. Usually, the required product code is indicated near the connector or in the instructions for the device.

Display disappears.

The main reason for the disappearance of the indication is the detachment of the loop from the display.

This can be easily fixed with a hair dryer with a special nozzle or a soldering iron.

The plume is a rather fragile component of the tonometer, so you just need to be extremely careful when working with it.

You also need to tactilely check for heating of the elements. If they get warm, then either replace or solder it.

Buttons do not work.

Since tact buttons are used, only its replacement is necessary here.

Incorrect readings of the device.

In 90 percent of cases, this is a violation of the rules for measuring pressure. Do not measure pressure immediately after loading. It is necessary even if you just pulled the tonometer out of the cabinet, just sit quietly for a couple of minutes.

You cannot measure the pressure several times in a row. The numbers on the screen will be different. After each measurement, at least 15-20 minutes should pass. This is necessary to restore the elasticity of blood vessels. The more the patient is years old and the more severe the hypertension, the more time must pass.

Fault in the electronics of the device.

Firstly, if there is a suspicion of the electronics of the device, then you must first conduct a visual inspection of the soldering of the elements, for delamination or poor quality soldering.

If the tonometer produces an incomprehensible error, then it may be a matter of the compressor. Then if there is a jam, then the engine must be disassembled and the armature rotated and the old grease replaced. The tonometer with its analogue is checked without fail.

Mechanical blood pressure monitors are easy to use. There are no electrical elements in it, which means that you do not need to have special knowledge. Such blood pressure monitors are easier to calibrate by specialists. The simplicity of a mechanical blood pressure monitor is that it is practically eternal. There is no automatic blower here, the air is supplied by squeezing the bulb of the manual blower.It is silent during pressure measurement. But no matter how ideal it is, everything tends to break.

Here are the types of malfunctions we may encounter:

1. An arrow drops out - in view of the design features of the tonometer screen, it is not possible to install the arrow. Only replacement of the tonometer.
2. No air is blown - air leakage is possible, both in the tonometer itself and in the pear. If air leakage is observed in the hose, then you can simply cut off the damaged area and insert the branch pipe back, and attach the branch pipe to the pear.
3. Due to long-term use, it may fail check valve... Simply put, it is an air bleed valve. It is impossible to subjugate him, only a replacement is needed.
4. Defect of soldering cuff... In this case, you can use a glue gun, but if a hole has formed in the hose, then put a patch as a temporary measure. The seams of the cuff can be vulcanized with a soldering iron at 180 degrees.

Buy an inexpensive tonometer: https://ali.pub/295awr Repair of the OMRON M2 Basic automatic tonometer and adapter. On the channel.

Buy an inexpensive tonometer: https://ali.pub/295awr Repair of the OMRON electronic automatic tonometer and adapter. On the.

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In most cases, the repair of the tonometer is the replacement of a failed spare part: a pear.

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This video was created for informational purposes only. From practice I add that the cuffs are in the tonometer.

When measuring pressure with an auto tonometer, it gives an error. After checking the camera, I washed all the pipe connections.

Overview of unpacking the OMRON M2 Basic tonometer. Instructions on how to correctly measure the pressure.

The air relief valve is stuck.

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The video shows an adapter compatible with pressure meters from the Japanese company A&D. It is cheaper than the original one.

Repair of the cuff by gluing.

making a new valve for the tonometer.

The compressor is running, but the cuff is not pumping. The reason is damaged rubber membranes.

Replacing the tonometer power button.

The Gamma m1-1 tonometer does not gain pressure due to a non-working relief valve.

What if the semiautomatic blood pressure monitor is bleeding quickly? What if the tonometer writes Err3?

It is no secret that blood pressure is an important indicator for the functioning of the heart, blood vessels, the entire body system and human vitality. There is always at least one person in the family suffering from hypertension. Therefore, the house should have a tonometer for regular monitoring of the main indicator of health. Especially the device is required for the elderly and those who are engaged in heavy physical labor. As a rule, devices are prone to breakdowns, especially mechanical types of tonometers break down. Therefore, the problem of how to repair a tonometer with your own hands is quite relevant.

As a rule, the repair of devices consists in changing the component assembly. Why you need to buy a new mechanism and replace the broken one with it. For example, it is not possible to inflate the cuff with air. This means that the pumping check valve in the bag has broken. It is pointless to change only the valve, you need to replace the entire assembly, along with the tubes.

Electronic and semi-automatic machines are several times higher than a mechanical device. For these types of device, not too frequent malfunctions are noted. Often happen:

• malfunctions in the mechanism itself;
• absence or delay in displaying indicators on the display;

Display problems

It is better to eliminate serious breakdowns in a service center, because a warranty card is issued for repairs, and before its expiration, it is prohibited to carry out repairs on your own. You can change the bulb, cuff, batteries yourself, they are not covered by the warranty card.

If you decide to save time and money and fix the tonometer yourself, then you must first find the malfunction in the device. If a person uses it often, then it will not be difficult to identify the broken part. If the problem is air leaking from the system, then it must be detected. Having found a place for the passage of air, you just need to replace this element with a new one. If after that the pressure measurement went well, then everything worked out.

What breakdowns can a mechanical device have and how to fix them yourself:

The cause of the breakdown lies in the falling out of the gauge needle. Here you cannot fix the breakdown on your own. It is recommended to buy a new gauge and replace the broken one with it.

Pressure gauge in a mechanical tonometer

Sticking valve in the pear

You can buy the necessary part for a mechanical blood pressure monitor in an online store by ordering by phone, or in a medical equipment store.

Breakdowns and repair methods for an electronic type device:

When unrealistic indicators are displayed on the board, it is required first of all to replace the battery. If this does not help, you need to look for air leaks in the cuff, pear and the pipe connecting them. Here, repairs are carried out according to the circumstances: replacement with new parts or elimination of a leak.

A quick solution to the problem - changing the battery

It is not so easy to disable automatic devices. If the tonometer is not dropped, struck or shaken with force, then it will serve for many years. The electronics inside the camera are quite fragile and require delicate and careful handling.

If the problem is bleeding air, then you need to find the place of the gap. When it is located directly on the cuff, it is not necessary to replace it, it can be repaired. How to repair a vented tonometer cuff:

• If the hole is small and the cuff is strong and not worn, then it can be sealed with a hot melt gun.
• You can glue a piece of rubber patch or other suitable material onto the gap with rubber glue.
• Take a strip of thick aluminum and fold it in half. Put the damaged area between them and clamp it with metal, help yourself with pliers. Cover this place with glue.

When the air escapes at the factory soldering site, it can be vulcanized with a soldering iron at 180 degrees. It is important to remember that repairing the cuff is cheaper than replacing it, but it will not last too long after the intervention. Therefore, be prepared to replace this element.

Tonometer model AND UB 201

The AND UB 201 tonometer is a bracelet-type device for measuring pressure indicators. Most often, this model fails the cuff. To repair or replace it, you must remove it correctly. This is done in sequence:

1. The batteries are removed from the camera.
2. Remove the clamps that secure the cuff (they are located on both sides of the case) by prying them off with a screwdriver.
3. Pulling the cuff towards you, release it from the tonometer body, to which it is attached with two more latches.
4. The housing cover is attached with two screws at the back, they need to be unscrewed with a screwdriver. Open the cover carefully and remove it.
5. To completely disassemble the tonometer, press in the recesses at the top of the case with the same screwdriver, and it will easily fall apart.

Disassembling the device case

The body is assembled in the reverse order. It is important to put all its parts in place and fix them on special "pins".

The question is considered in detail, if the tonometer does not work, what to do.You can contact the service center and hand it over for repair, but it will take a lot of time, extra money will be spent. The breakdown associated with the replacement of an element can be eliminated by yourself - you can buy a new part in a medical equipment store and put it in place of the faulty one.

I welcome everyone! I continue to summarize and lay out in a concise form my experience in electronics repair. Here are my Top 10 most frequent malfunctions of tonometers, which was born as a result of accidental repairs of medical equipment and communication with other Masters. I will not say that I am a great specialist in this area, but I came across something and successfully repaired it. Let's start the rating. The places of malfunction of tonometers and blood pressure meters are sorted by the frequency of occurrence of the malfunction.

If there is a loss of tightness of the pressure supply circuit in your tonometer, then the error “Err Cuf” will most likely be displayed on the screen of the automatic tonometer. Translated from English, cuff is a cuff, so it is logical that the Err Cuf error is a cuff tightness error.

If your tonometer gives such an error, then first of all you need to check the connection between the cuff and the compressor. To do this, you need to remove the cuff. Let's see how to do this using the AND UB-403 wrist tonometer as an example.

How to disassemble an automatic wrist blood pressure monitor AND UB-403

When turned on, this blood pressure meter shows zero.

Then the cuff is pumped, but it is interrupted and the error Err Cuf appears on the display.

We unfold the AND UB-403 tonometer sideways and see a plug that needs to be removed by prying it with a thin slotted screwdriver or an awl.

On the other side of the case, remove the same plug.

This is what these cuff plugs look like.

After that, we remove the cuff of the AND UB-403 tonometer and see the connection points of the branch pipes from the compressor to the cuff - there are two of them.

In these places, loosening and air leakage can occur, so we carefully inspect and clean the sealing rubber bands of the tonometer pipes and the cuff.

We are trying to put everything together in the reverse order.

If the cuff error persists, check the cuff itself for cracks. This is usually done visually.

The rubber cuff of the tonometer can be repaired by gluing a patch over the air leak. About, how to patch and repair the cuff, see the video below using the Microlife tonometer cuff as an example.