When changing the parts of the accumulator, the unstable operation of the pump or leak will tell. If the equipment has been working in a damp room for a long time, and the storage tank is made of steel, it is likely that sooner or later it will rust. To replace the accumulator in the pump station, it will be necessary to remove and disassemble it, after draining the water and disconnecting the pump from the power supply.
When is the time to change the accumulator
If the tank is rusty and it has holes in one or more places, this leads to double damage. The pressure in the housing drops, which immediately affects the operation of the rubber membrane into which water enters. Having not found resistance, the pear stretches beyond the prescribed and breaks, although it is made of durable rubber. The total upper pressure consists of two indicators:
- water pressure;
- air pressure around the pear.
If the relay is set to 3 atmospheres, then 1 atmosphere gives air in the housing, and 2 atmospheres the liquid itself. Therefore, periodically it is necessary to measure the air pressure in the housing, if suddenly the pumping station began to work longer than usual or turn on more often. To check if the membrane has burst, you just need to press on the nipple: if water flows, then it's time to change the pear. It happens that the ring that keeps the membrane in place becomes unusable, it is responsible for the tightness of the system.
If the cause of damage to the pear is primary, the problem will soon affect the integrity of the tank, because the liquid will flow into it continuously and rust will form inside.
How to identify a breakdown from home
In the event of a breakdown, the water in the tap will go unevenly - either with pressure or with a thin stream. If you hear the sound of a working station from home, you can determine that it turns on more often and works longer. This happens because the engine cannot gain the required power to turn off the relay - until the sensor trips, the engine will work. It is impossible to allow such a constant mode, since the device can simply burn out if it does not have an overheat protection.
Preparing for repairs
To more accurately determine the cause of the failure of the pumping station, namely the accumulator or its parts, this unit is removed and disassembled. Before this, the water is drained:
- the station is turned off;
- the hole through which water enters the tank is blocked;
- open the taps in the house and drain all the water.
All repairs are best done in the light. To do this, the container is taken outside and untwisted flange connections. Inside you can find a torn membrane that needs to be replaced, to find cracks in the body or a broken ring that holds the neck of the pear.
Replacement parts can be bought at a service center or similar to other brands. The main thing is to fit in size and volume.
Work stages
After disassembling and preparing spare parts, you need to rinse the new membrane, dry the metal container, if it does not require repair. If deposits have accumulated inside - lime or rust - they need to be removed with sandpaper or a metal brush, then washed and dried.
When replacing the membrane, the focus is on the seat so that the rubber lies flat on it. After this, the pear is fixed and the tank is reassembled. To check for leaks, air is pumped into the housing and held for 24 hours, after which it is measured again. If there are no losses, then it was only a membrane. The accumulator can be installed back and connected to the supply pipes.
If a whole membrane was found during disassembly, this means that interruptions in water are associated with a crack in the housing through which the air escapes. Damage is detected on time if the rubber is still intact, because over time it is more stretched and torn.
To repair the case, you will need a welding machine or adhesive solution. Cold welding is more reliable, as the adhesive under pressure sooner or later leaves and the problem reappears.
Preventative measures
The hydroaccumulator membrane fails faster if frequent temperature jumps occur. For cold water supply, the pear is made of rubber, for hot - of a special material, which for 5 years, according to manufacturers, is able to withstand heating up to 100 degrees. If operating conditions are not met, the rubber will not last 5 years.
The rubber bulb also does not tolerate frequent sudden changes in pressure, it wears out faster. Strong compression, which occurs with excess pressure in the tank, leads to deformation of the material and its cracking.
It is important to strike a balance between the maximum pressure in the membrane and the air pressure, which should not exceed 2 atmospheres. To do this, periodically connect a manometer to the spool and check how much air is inside. If necessary, you can pump it up with a simple bicycle or machine pump.
