In detail: do-it-yourself baby pump repair instructions from a real master for the site my.housecope.com.
Among all the variety of vibration pumps on the market, it is "Malysh" that enjoys the greatest popularity. This pump, which has an optimal price-performance ratio, is quite reliable, but nevertheless, various problems with it occur quite often.
Popular pump models Kid
In this article, we will consider typical breakdowns that may arise during the operation of the "Kid" submersible vibration pump, and the repairs that are necessary to eliminate them with our own hands.
The products of this sample have their own design and device features, which naturally affects their weaknesses. They need to be highlighted first.
"Kid", and any other type of vibration pump, very problematic transfers work "dry". This is due to its design features, namely the presence of a stator, which is extremely susceptible to overheating. Even short-term idle operation, lasting several minutes, can cause damage to the mechanism.
In addition, there is a cumulative effect - the operation of a water pump in air causes a gradual accumulation of damage in the stator, which greatly reduces its service life.
Over time, the wear of the stator will reach a critical rate, and a short circuit of the turns occurs, as a result of which the pump will be unsuitable for further operation. In order to repair such a breakdown, it is necessary to rewind the coils of the vibration pump with your own hands.
The simplest pump Kid with a cast iron body, close
Video (click to play).
Another problem of vibration pumps "Malysh" is the loss of strength of the body joints during operation. This is the weakness of the technology, which is the basis of their work: constant internal vibration provokes the weakening of threaded connections, which can completely unwind if repairs are not carried out in a timely manner.
The biggest problem is the weakening of the threads on the check valve and submersible pump piston retainers, which cannot be tracked by inspecting the product body. So be prepared to proactively tighten the submersible pump connections from time to time.
You can also go over the pump with your own hands right after the purchase, and replace all standard nuts on threaded connections with self-locking nuts, or tighten the locknuts over the standard ones.
Since the Malysh submersible pump belongs to the class of budget devices, manufacturers, in order to reduce the total cost, use rubber gaskets to seal the case, which do not have sufficient efficiency.
As a result, accelerated wear of the check valve and piston is observed, which allow water with a large amount of mechanical impurities to pass through. To reduce the negative impact on the submersible pump, it is recommended to use a mechanical filter.
Here you can do in two ways: handicraft - put on a nylon stocking on the water intake hole, or purchase a store filter. Most often, filters for vibration pumps are offered either in the form of a cylinder made of porous material or in the form of a nozzle made of a metal mesh with very fine meshes.
In principle, both devices provide effective cleaning from large insoluble particles (silt and sand).
Modification of the pump check valve Kid
Another scourge of budget vibration pumps is a capricious check valve, on which the level of water supply pressure depends. Very often, even in a new device coming from the factory, the device has an inaccurately tuned "reverse". So it makes sense to adjust it yourself right after the purchase.
To do this, you need to lower the pump into a large container of water (a barrel will do) and experiment with tightening the nut on the valve. Once you reach the maximum head, fix it with a lock nut.
To begin with, we will consider the features of disassembling and assembling the submersible pump "Kid" with our own hands, as they are the beginning and end of any repair.
To disassemble the device, in sequence, remove all the screws that connect the parts of the case. It is recommended not to unscrew one screw at once, but to gradually loosen all connections by several turns. A vise can be used to secure the pump.
If the pump has already been in operation for a long time, then it is possible that, under the influence of water, the bolts are tightly acidified, and no special lubricants help.
There are two ways out: either use a power screwdriver with a large lever, or carefully saw off the screw caps with a grinder. For the future, it will not hurt to replace the standard screws with screws with Phillips slots, which will facilitate further work with threaded connections.
Pump Kid with steel body and power cable
When the repair is complete and you need to reassemble the unit, be careful to match the holes on the top of the case and the center rubber gasket. Since they are located symmetrically to the edges of the housing, it is easy to get tangled in the correct position of the gasket.
After assembly, be sure to check whether the device is operational in a bucket of water so that you do not have to lower and remove it from the well once again.
There are three possible reasons for this problem: Loose stem threaded connections; the valve is worn out or torn; the stock broke (in this case, DIY repair is possible only if you have a spare "Kid" that can be used for details).
After connecting the pump from the network, it knocks out the plugs, or the cable is charred.
Reasons: the armature winding burned out - rewinding of the coils is necessary; the cable is damaged - the cable needs to be replaced.
Reason: unregulated non-return valve.
Excessive vibration and overheating of the device.
Cause: damage to the compound (a layer of epoxy lining for vibration damping) - it needs to be replaced.
Disassembly of the pump that has been in operation Malysh
Now let's turn to a specific work technology that will help us cope with troubles. to the menu ↑
We disassemble the device.
Determine the place where the compound peeled off from the submersible pump housing. This can be done by lightly tapping the body with a small hammer. In normal areas, the sound will be dull, in damaged areas - voiced.
We remove the assembly with the compound from the body of the vibration pump.
Using a grinder, carefully apply a grid of notches to the inside of the case, up to 2 millimeters deep. We make the same mesh on a node with an epoxy compound.
Cover both areas with notches with glass glue (any sealant can be used)
We return the assembly with the compound to its original position - fix it and wait until the sealant hardens.
Putting the body back.
To rewind the vibration pump coils, you will need the following materials:
Copper wire with a diameter of 0.65 m (PETV grade);
Epoxy resin, plasticizer, hardener.
Winding machine;
Soldering iron
Electric stove;
Hammer;
Screwdriver;
Protective gloves.
It is recommended to repair the vibration pump outdoors, or in a well-ventilated area, since epoxy resin will have to be melted to rewind the coils, and it releases toxic substances, the inhalation of which is harmful to the body.
Pump Kid, ready to install and connect
First, we disassemble the submersible pump. We remove the filled electromagnet from the device. To do this, you will need to melt the epoxy compound.
For this, an electric stove is best suited, on which you need to put the unit body.Wait until the epoxy warms up to a temperature of 160-170 degrees (this is indicated by the characteristic smoke coming from it - this smoke is toxic, try not to inhale it).
Next, we need a wooden log, about which it will be possible to knock out the electromagnet from the body. After the compound has warmed up, put on protective gloves and beat the body against the deck (the electromagnet should look down) until the electromagnet changes its position so that you can pry it off with something and remove it.
While the case is hot, clean it of epoxy residues with a metal brush or flat-head screwdriver.
Now you need to knock the electromagnet out of the coil with a hammer. To do this, you need to use a small piece of wood as a wedge. It is recommended to do this with an assistant who will hold the coils while you will knock out. If you fix the coil in a vice, then, most likely, the repair will end on the deformation of its frame.
As soon as the core of the electromagnet is knocked out, unwind the coil and clean its frame from the remaining epoxy resin. Place the bobbin on the winder and wrap the bobbin fully (about 8 layers). This can be done without a special machine, but it will take much more time.
Connect the beginning and end of the wire to the main part using a soldering iron. We put the electromagnetic core back into the coil frame. We pass the cable for connecting to the mains through the seal inside the case. We separate the cable and strip its ends by 2-3 cm.
We solder the cable to the beginning of the winding of the coils. Gently lower the coils into the housing. To make the coils sit tightly in their place, attach a small wooden block to the electromagnetic core, and gently tap them into the desired position.
Now you need to make an epoxy compound. Fix the unit body in a vise. Stir the epoxy, plasticizer and hardener in a metal container.
Fill the coils with the resulting mixture up to the upper edge of the electromagnet. Wait 10-15 minutes for the compound to fill all gaps. If, after the epoxy has dropped into the voids, its level has decreased, then add an additional amount of the mixture.
In order for the compound to completely cure, you need to wait at least 24 hours. Then assemble the device body. After the repair has been completed, test the operation of the pump in a bucket of water; it may be necessary to adjust the gap between the armature and the electromagnet. to the menu ↑
Most gardeners and gardeners use a water pump to provide water supply, as well as watering a greenhouse, garden beds, orchard or lawn. Often they buy various models of submersible vibration pumps and the absolute priority is "Kid". They are small in size, inexpensive, but have good power, allowing you to supply water over a long distance.
But these budget electrical appliances have a significant drawback - they often fail for various reasons. With some breakdowns, it is quite possible to repair the pump with your own hands. About what breakdowns are most common and how to repair - our article.
It is possible to carry out a high-quality repair of a vibration pump with your own hands only if you understand its structure, as well as the principle of operation. Information about setting up an electric pump will not be superfluous. Indeed, there are situations when the repair work was carried out correctly, but due to the fact that there was no competent setting, the unit cannot perform its function.
The design consists of the following basic elements:
metal case;
electromagnet;
vibrator.
The baby vibration pump device has a standard look for such technical mechanisms.
The water pump can be with top or bottom water intake.If vibration pumps have an upper liquid intake, then the suction valve is at the top, and the electric drive is at the bottom. This arrangement has several advantages:
The "electrical part" of the device is under water, which contributes to constant cooling;
Models with a lower water intake have the opposite arrangement of the mechanism components. Such units require constant monitoring of the water level. Dry running leads to overheating and, as a result, to breakdown. The technical parameters of the models differ from each other.
In order to know how to repair a pump, a baby needs to learn all the nuances of installing the mechanism. It is important to know not only the device of this device, but also all its "problem areas".
The electromagnet is firmly fixed in the housing with a compound. It not only fixes the core with the coils, but also acts as an insulator and transfers heat from the coils to the body. A compound is a special mixture that is prepared from epoxy resin, sand, and also a plasticizer. Carrying out repairs with your own hands, the damaged areas of the compound are sealed with a sealant.
Vulnerable elements of a submersible electric pump are rubber parts. Despite the fact that they are made of high quality material, they wear out during operation, and therefore require replacement. If the pump is out of order, the repair should begin with the inspection of the rubber parts.
Please note that there must be a gap of 0.6-0.8 mm between the body and the valve. It allows water to flow out when there is no pressure.
First of all, you should inspect the rubber valve covering the inlet. It has to be changed more often. After that, we inspect the rubber diaphragm that separates the hydraulic chamber from the electric drive. Don't ignore the rubber piston located on the rod.
The principle of operation of a vibration pump is that the alternating current is converted into electromagnetic oscillations of the armature, which are transmitted to the piston located on the same rod. The oscillating motion of the piston builds up pressure, allowing water to be pumped.
Schematic representation of the device
How does an electric pump work? After connecting the device to the mains, the magnet attracts the armature. At this moment, the poles are magnetized. The shock absorber performs its function - to return the anchor to its place. This process takes place in half the period of the current wave. Accordingly, over the full period, the anchor will be pulled twice. Considering that the frequency of the mains is 50 Hz, then there will be 100 armature oscillations per second.
The rubber piston vibrates with the same frequency. After all, it is located on a rod pressed into the anchor. The pump device contributes to the formation of a hydraulic chamber, which on one side is limited by a valve near the inlet, and on the other by a piston.
Water is an elastic two-component medium consisting of air that has dissolved and that which has not dissolved. Through the inlet, the valve passes liquid into the inside of the electric pump. The vibration of the piston causes the water to behave like a spring. Each time you unclench, some of the water is pushed out of the appliance chamber.
Having mastered the device of the baby vibration pump, you can start repairing it. We bring to your attention examples of how to repair a baby pump on your own.
Assembling the Kid with your own hands
The main and most important thing before disassembly is to mark the location of the parts relative to each other on the case. It is best to cut with a sharp screwdriver. But you can do it with a marker.
Next, remove the screws that connect the pump. First, in turn, unscrew the screws a few turns, and then completely twist them. For convenience, the device can be fixed in a vice.
The piston disc is set parallel to the saddle along the axes, checking the distance from the edge to the gasket with a centimeter or compass. Sometimes the parallel is broken. The reason may be a grover on the screw (you can wrap a strip of foil under it) or a bend in the stem (turn the gasket slightly to align it).
It is important during assembly not to confuse the position of the rubber gasket where the holes match.
After correcting the deficiencies or breakdown, you need to check the operation of the pump. To do this, it is dipped in a bucket full of water. Even if there is no hose, if the equipment is working properly, a stream of water will flow from the branch pipe.
