In detail: pump kid do-it-yourself repair cable replacement 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 ↑
Submersible vibration pumps have many positive qualities. However, they also have a minus: frequent breakdowns and malfunctions. Among them there are such as a valve break, an open traction, a short circuit, etc. But even if all these words do not give you an understanding of the essence of the problem, it is not necessary to immediately run to the master who will fix everything. You can try to figure it out yourself.
Submersible vibration pumps have many positive qualities. However, they also have a minus: frequent breakdowns and malfunctions. Among them there are such as a valve break, an open traction, a short circuit, etc. But even if all these words do not give you an understanding of the essence of the problem, it is not necessary to immediately run to the master who will fix everything. You can try to figure it out yourself.
Just don't start the repair at breakneck speed.Otherwise, when you fix one breakdown, you can commit another or completely ruin the pump, so that it will no longer work. And to prevent this from happening, first you need to understand how vibrating submersible pumps are arranged and what is the principle of their operation. Let's start with this.
The principle of operation and design of a submersible pump
The principle of operation of submersible pumps is to convert the alternating current strength into mechanical vibrations (vibrations) of the piston and armature. These vibrations promote the movement of water into the discharge pipe from the hydraulic chamber, which is located between the piston and the valve.
So, we now know how the pump works. It remains to figure out how it works and what these or those details are for. We will consider the device of a submersible vibration pump using the example of the “Trickle” brand. This will not prevent you from understanding the pumps of other brands, since they are arranged according to the same principle.
Complete assembly diagram of the submersible pump "Trickle"
The main parts of the pump: - frame - electromagnet - vibrator
The electromagnet is fixed in the pump housing. The magnetic system itself is a core and two coils wound with copper wire. To fix it in the body, the electromagnet is poured with a compound. By the way, the compound is also an insulating and heat-dissipating material.
The vibrator of the pump consists of an armature, a rod, a shock absorber (rubber membrane). The stem is firmly inserted into the armature, and the shock absorber is installed from above, onto the stem. By the way, some important parameters of the submersible pump operation depend on the manufacturing quality of the shock absorber. The hydraulic and electrical chambers of the device are separated by a rubber diaphragm, which is fixed by a stop. She herself also serves as a support for the rod, determines its direction. A rubber piston is located on the top of the rod.
An important part of the pump is the rubber valve, which is located in the housing. It closes the holes for the water outlet, and in the absence of pressure in the device, it ensures its free flow.
Now you already know the pump device like the back of your hand, which means it's time to put your knowledge into practice and repair the device with your own hands, without contacting a specialist! And we will help you with the following instructions, in which we will tell you about the most common malfunctions, causes, as well as how to fix them. (We recommend that you refer to the diagram provided to you above.)
Reason 1: The fastening of the nuts located on the stem over the shock absorber is loose.
Remedy: Disassemble the pump, tighten the nuts until they stop. Counter (fix) the upper nut so that the fastening of the nuts does not loosen in the future. When disassembling the pump, you may encounter such a problem as rusty tie screws (M8x40). In this case, it will be unrealistic to remove them. However, this does not mean that repairs are impossible. You can use a grinder and just carefully cut them off, and after fixing the malfunction, replace them with hex head cap screws.
Reason 2: Valve wear, rupture
Remedy: Replace valve.
Reason 3: Broken stem
In this case, check what happened to the stem. If it is deformed or broken, it cannot be replaced.
Reason 1: Burnt armature winding
Remedy: Replace the winding with a new one.
Reason 2: Faulty cable
Remedy: Check the cable with a tester. If it is defective, replace it with a new one. However, it is not possible to replace the cable in all models of submersible pumps, since some models, for example "Kid", provide for filling the wire in the housing with a compound. If you are faced with just such a model, the cable can only be extended by the twisting method.
Cause: Operation without water, as a result of which delamination of the magnetic part of the pump occurs.
Remedy: The breakdown is quite serious and requires a lot of time and effort in its elimination. Disassemble the pump. Separate the electrical part. To check if the magnet is attached or peeled off, tap on the case. If you have this problem, separate the magnet from the case and cut the grooves (2 mm) along and across with a grinder. Also make grooves on the inside of the case. Next, you should cover the body from the inside with glue, sealant and insert a magnet inside. When everything is dry, proceed to collect the pump.
Cause: Insufficient clearance in the vibrator (or poor fastening of the nuts - see item 1)
Remedy: Add washers to the vibrator (11 - in the diagram). Determine the number of washers to add empirically, to the required water pressure.
Well, you learned about all the main features of submersible vibration pump breakdowns. Now you can repair the pumps of the brands “Malysh”, “Neptune”, “Stream”, “Harvest”, “Strumok”, “Bosna”, “Dzhereltse” and others yourself. Congratulations and wish you successful repairs and a long service life for your unit!
“A month ago, Expert analyzed. The same bullshit. breakage of the stem. I think they usually break off in the place where the piston is installed. At work, I pressed out the torn rod, the turner cut the internal thread on the main part of the rod, screwed on the workpiece tightly, cut the external thread in the place where the piston sits, welded the transition just in case, carefully trimmed it on the machine! Collected! All things! Works like new! This is all provided that there is no other damage (for example, defects in the rubber piston or diaphragm). ”
The water pump "Malysh" refers to submersible vibration-type units operating from a 220 V network. This device is widely used for domestic needs, and it is especially popular among summer residents and owners of private houses. One of the main parts, which ensures uninterrupted operation, is the valve for the "Kid" pump. If the vibrating unit works, but starts pumping water poorly, most likely the problem is in the valve and its adjustment.
The operation of vibrating pumps is based on the inertial principle. The units of the unit impart vibrational movements to the liquid, which are transmitted over a considerable distance. The main elements of the pump are:
The vibrator gives vibrating motion to the liquid using electromagnetic elements. These include a copper wire spool and a U-shaped core.
These parts are located in the body and filled with thermoplastic polymer resin (compound) to protect against aggressive environments. In addition, the compound insulates the electrical parts from contact with the metal of the case.
The vibrator includes an anchor with a rod attached to it. This unit is driven by an electromagnetic force, and it is returned to its original position by a spring. In the upper part of the body there is a rubber valve, which most often fails.
