How to exhaust the air in the pipes of an outdoor spa bathtub?

During the maintenance of an outdoor spa bathtub, exhausting the air in the pipes is an important step. The air in the pipes may affect the water flow effect of the spa bathtub, and then affect the normal operation of the water circulation system. If not handled in time, the air trapped in the pipes may also cause a series of problems such as pump idling and reduced heating efficiency, which not only affects the user experience, but also may damage the mechanical system of the outdoor spa bathtub.

The following will discuss in detail the reasons for air entrapment in the pipes of the outdoor spa bathtub, how to determine whether there is air, and the specific exhaust operation methods to help users better maintain the normal operation of the outdoor spa bathtub.

What are the reasons for air entrapment in the pipes of the outdoor spa bathtub?

There are many reasons for air to enter the pipe system of the outdoor spa bathtub, mainly including the following aspects:

1. The water level is too low

When the water level of the outdoor spa bathtub is low, air is more easily sucked into the pipe from the water surface. This situation is common in spa bathtubs that have not been used for a long time or the water level has not been replenished in time.

2. Residual bubbles after cleaning or replacing the filter

After each cleaning or filter replacement, air is often generated in the outdoor spa bathtub filtration system, and some of the air may enter the pipe. Failure to exhaust air in time will cause poor water flow and affect the normal operation of the water circulation system.

3. Air inhalation during water pump operation

When the outdoor spa bathtub water pump is started without being filled with water, air may be sucked into the pump chamber and pipe, thereby affecting the working efficiency of the water pump, and in severe cases, causing damage to the water pump.

4. Residual air after drainage or maintenance

After each drainage cleaning or regular maintenance, air often remains in the spa bathtub pipe. If it is not discharged in time, it will affect the smoothness of water flow.

How to determine whether there is air in the outdoor spa bathtub pipe?

Before performing the exhaust operation, first confirm whether there is air in the outdoor spa bathtub pipe. Here are several ways to judge:

1. Observe the water flow

Poor water flow is one of the common manifestations of air in the pipe. If you find that the water flow in your spa bathtub is intermittent, fluctuating, or the flow rate slows down significantly, there may be air blockage in the pipe.

2. Pay attention to the spray effect of the nozzle

Air trapped in the pipe will affect the spray effect of the nozzle. If the water flow of the outdoor spa bathtub nozzle is weak or bubbles are sprayed intermittently, it usually means that there is air in the pipe.

3. Listen to the sound of the pump

When there is air in the pipe, the water pump will make an abnormal sound when it is running. Users can judge whether there is air in the pipe by carefully listening to the working status of the pump. If the outdoor spa bathtub water pump makes a "gurgling" sound, it means that the water pump has sucked air into the water pump and needs to be discharged as soon as possible.

How to effectively exhaust the air in the outdoor spa bathtub pipe?

Exhausting air from the outdoor spa bathtub pipe is a relatively simple operation, but make sure to exhaust it thoroughly to avoid water flow problems again. Here are the specific exhaust steps:

1. Check the water level

Before performing the exhaust operation, make sure the water level in the spa bathtub is sufficient. The water level should reach the middle position of the filter to prevent air from entering the system due to insufficient water level. If the water level is low, timely water replenishment is the primary measure to prevent air from entering the pipe.

2. Loosen the exhaust valve of the pump

Most outdoor spa bathtubs have an exhaust valve on the water pump. After turning off the power, gently loosen the exhaust valve of the pump to let the air in the pipe naturally discharge until you can no longer hear the sound of gas flowing out. Note that the water pump should not be running at this time to prevent the water pump from sucking in more air.

3. Turn on all nozzles

Open all the nozzles of the outdoor spa bathtub, adjust to the maximum water flow, turn on the water pump and observe the water flow. At this time, if bubbles are sprayed from the nozzle, it means that the air in the pipe is gradually being discharged. Keep this state for a while until the nozzle sprays a stable water flow without bubbles.

4. Use a circulating pump to exhaust

If the nozzle sprays bubbles seriously, you can turn on the circulation pump of the spa bathtub to gradually remove the bubbles. Be careful not to let the water pump run idle for a long time to avoid damaging the impeller and motor of the pump.

5. Exhaust the air from the filter system

Air can easily accumulate in the filter system of an outdoor spa bathtub, especially after cleaning or replacing the filter. Check the filter's exhaust valve and loosen it appropriately to allow air to escape naturally. Then tighten the exhaust valve again to prevent air from entering again.

6. Exhaust the air from all pipes

If the above steps still fail to exhaust all the air from the pipes, consider loosening each pipe joint of the spa bathtub in turn to exhaust the air. At this time, you need to turn off the power and operate carefully to prevent excessive water flow from causing accidental splashing.

How to prevent air from appearing in the pipes of an outdoor spa bathtub?

After clearing the air from the pipes, daily protective measures are equally important and can effectively reduce the occurrence of air entrapment. Here are some preventive measures:

1. Maintain proper water level

Check the water level of the spa bathtub regularly to ensure that the water level is within a reasonable range to prevent air from entering the system due to insufficient water level.

2. Exhaust after cleaning or replacing the filter

After each cleaning or replacement of the filter, check and exhaust the air in the filter in time to prevent air from entering the pipe with the water flow.

3. Make sure the pump is full of water before starting it

Before starting the outdoor spa bathtub pump, make sure the pump chamber is full of water. You can open the pump chamber cover and observe the water level in the pump. The pump can only work effectively if there is water, otherwise it is easy to suck in air and affect the working condition of the pump.

4. Check the pipe tightness regularly

Regularly check the various connection parts of the outdoor spa bathtub pipe and the water pump to ensure that all interfaces are sealed intact to avoid air from entering due to leakage or poor sealing.

System inspection after exhaust

After completing the exhaust operation, the exhaust effect can be confirmed by the following steps:

1. Observe the water flow

The water flow should return to a stable and smooth state without interruption or fluctuation. If the water flow is normal, it means that the exhaust is successful.

2. Observe the spray effect of the nozzle

All nozzles should spray a uniform water flow without obvious bubbles or intermittent spraying. If the nozzle works normally, it means that the air in the pipe has been completely exhausted.

3. Check the sound of the pump again

When the pump is working normally, there should be no abnormal noise. If the pump runs smoothly, it means that the air in the pump has been exhausted.

4. Measure the water temperature

In the case of air entrapment, the water heating speed of the spa bathtub may be affected. After exhausting, you can check whether the water temperature has returned to normal heating efficiency to confirm whether the exhaust is complete.

Common exhaust problems and solutions

When exhausting the air in the outdoor spa bathtub pipe, users may encounter some common problems. The following are the problems and solutions:

1. Repeated bubbles

If bubbles still appear repeatedly after exhausting, it may be that the outdoor spa bathtub filter or the nozzle position is not sealed enough. At this time, check the sealing condition of all connecting parts and retighten or replace the sealing gasket.

2. Insufficient nozzle water flow

If the nozzle water flow is still weak after exhausting, it may be due to filter blockage or insufficient suction of the water pump. At this time, check the filter and clean it to ensure that the water pump is working properly.

3. Increased pump noise

If the water pump still makes abnormal noise after exhausting, it may be that the impeller is worn or the inside of the water pump needs further inspection. It is recommended to contact outdoor spa bathtub professionals for further maintenance.

Why should I choose Lovia Spa as my outdoor spa supplier?

Lovia Spa, established in 1989, is one of the leading manufacturers and suppliers of high-quality outdoor spa bathtub, hot tubs, and swim spas in China. With a massive production capacity of over 1,200 units per month and a strong international presence, we offer customized products, competitive prices, and excellent after-sales service. Our products are certified with CE, ETL, ISO9001, ROHS, and other industry standards, ensuring durability and performance. Contact us now for attractive deals, low, prices and special promotions on bulk orders.