In most models of gas columns, there is such a part as a rubber membrane, which is also called the diaphragm. It is considered a weak plot of such equipment, as it is worn and often robbed during the operation of the heater.
Purpose
The diaphragm is installed in the water column aqueous node and is responsible for separating the cavities of the water regulator. The main function of such a membrane is the regulation of water pressure. When it begins, it leads to a shift of the rod, which opens the gas supply to the burner.
Indications for repair
In the process of using the column due to pressure on the membrane and incoming rigid water on the aperture, small cracks and strain sections appear on the diaphragm. To see them, you need to remove the membrane and carefully inspect it. Quite often, the assessment of the state of the diaphragm and its subsequent replacement is performed during the annual maintenance of the column.
The fact that the membrane was worn to a planned check, you will be prompting problems with the inclusion of the column. At the same time, you must first make sure that the column comes in gas, and water is supplied with sufficient pressure. If your column uses a piezorozhig, clean the ignition burner (jetters). If after such cleaning the device does not turn on, most likely, the membrane was damaged and the device should be disassembled.
If in your column, the inclusion occurs through an electronic ignition from the batteries, while you turn it on and hear clicks, then everything is in order with the membrane, and the problem is likely to relate to the gas path or the irestyle electrode. If no clicks are turned on, the membrane damage is the most likely cause of the breakage, which is easy to ensure that disassemble the node.
In some columns, it is possible to determine the state of the membrane by a stock that controls the electronic unit switch. After removing the casing of the column and opening hot water, they look, whether the rod moved. If it is in a diaphragm, the rod will remain in place.
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In situations where the damage to the membrane is minimal, but over time increases and leads to a rupture, the water will flow within the cavities of the water regulator, which leads to the operation of the device not with all possible power. Gradually, power drops and eventually ceases to turn on completely.
What will happen when replacement?
If you do not replace the diaphragm in time, it may cause gas supply failure to column. As a result, the water will be badly heated either at all will flow through the heat exchanger without heating.
Tips for choosing
You can purchase not a rubber replacement, but a silicone membrane. Such a detail is more elastic and serves a longer period (from 10 years).
The rubber membrane of white or red color is the least preferred option, since this item is very quickly wearing. Sometimes it breaks immediately after replacing.
- Selecting a suitable membrane for a gas operating water heater, you need to take into account the brand of the device, since round diaphragms are installed in some columns, and in others - parts with a rather complex form.
- If you could not find in the presence of a round diaphragm for your column, it is permissible to purchase and install a detail of a similar diameter for a column of another manufacturer instead of it, for example, a membrane with a diameter of 73 mm.
- If the column is used for you for longer than five years, buy a membrane immediately with plastic parts, which are adjacent to it (with time plasticizers, which leads to fragility).
Replacement
Change the damaged membrane in the flow heater is quite realistic:- Disable water and gas access to the machine.
- Open the hot water crane for pressure relief.
- Remove the casing of the column by unscrewing the fastening screws.
- Lay the water regulator over the cold water supply pipe.
- Unscrew the nuts that fix the knob to water pipes, as well as screws that fasten the item to the gas part.
- Remove the regulator and disassemble it.
- Replacing the membrane, assemble the column in the reverse order.
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Visually, the whole process of replacing the membrane, see the following video.
Where can one buy?
Purchase of the membrane is possible in the service centers of the producers of gas columns, but prices, as a rule, are quite overestimated in such dealers. Common membranes are sold in local stores and on trading platforms on the Internet.
