Browse Forums General Discussion Re: Noisy water pump from rainwater tank 3May 03, 2023 12:56 pm 3in1 Supadiverta. Rainwater Harvesting Best Practice using siphonic drainage. Cleaner Neater Smarter Cheaper Supa Gutter Pumper. A low cost, siphonic, eaves gutter overflow solution. Re: Noisy water pump from rainwater tank 6May 03, 2023 4:43 pm 3in1 Supadiverta. Rainwater Harvesting Best Practice using siphonic drainage. Cleaner Neater Smarter Cheaper Supa Gutter Pumper. A low cost, siphonic, eaves gutter overflow solution. Re: Noisy water pump from rainwater tank 7May 04, 2023 4:33 pm ![]() It's good practice to have a pressure tank when only using a pump to supply a cistern. A cistern is a slow fill (max 6 lpm), short duration end fixture and so the pump invariably is more powerful than required and it is constantly used in short bursts. A pressure tank has a reserve of water which is used first and when it is close to empty, the pump starts and fills the tank and the cistern at the same time. A 20 litre pressure tank will have a draw down of about 7 litres which will save about 1/3rd of the pump starts, but the bigger the tank, the better because there is less wear on the pump and longer durations between run times. I'm not saying you have a pressure tank, you will have to check, but if the pump doesn't start every time, it certainly sounds like you do have one. It is possible that the pressure tank (if you have one) has lost some pressure and the pump is cycling after the cistern has filled. Some pump controllers do keep the pump running for a short time after the demand ceases but I can only guess as to the cause of the continuing noise from here. You need to ask someone at a dedicated pump shop. Do you know tha pump's make and model. Any expert you ask will need to know that. Thanks H2O for the detailed reply. As you said, I think the plumber has installed a pressure tank. I tried to check the make and model of the pump, unfortunately I could not as it is at the bottom of the tank and attached to a fixed pipe. One more thing, I have noticed, even if I turn off the power to the pump some whistling noise is coming near the diversion valve intermittently Thanks again Re: Noisy water pump from rainwater tank 8May 04, 2023 7:13 pm I would need to be onsite to see your installation to give an opinion. Most plumbers don't have experience with rainwater harvesting systems but if you are near to a pump service centre that also does water tank installations, talking to one of their experienced guys would be the go. 3in1 Supadiverta. Rainwater Harvesting Best Practice using siphonic drainage. Cleaner Neater Smarter Cheaper Supa Gutter Pumper. A low cost, siphonic, eaves gutter overflow solution. Re: Noisy water pump from rainwater tank 9May 08, 2023 9:14 am ![]() I would need to be onsite to see your installation to give an opinion. Most plumbers don't have experience with rainwater harvesting systems but if you are near to a pump service centre that also does water tank installations, talking to one of their experienced guys would be the go. Thanks H2O, I am in Sydney ( Parramatta), could you please recommend someone, who can do an inspection and identify the issues? Re: Noisy water pump from rainwater tank 10May 08, 2023 9:17 am ![]() ![]() Hello, We've just moved into our new house. Our rainwater tanks are connected to the toilets, I've noticed when we flush it is quite noisy. The pump is not engaged every time when we flush, I think it will activate when the entire water from the pipe is used. And the noise will be there for 5-10 minutes. Our master bedroom is close to the rainwater tank, and it is really annoying during night-time. Our pump is placed inside the water tank. Is there a way to reduce the noise or limit the intake from the tank only during the daytime. Any help will be appreciated. Hi In my experience tanks or any kind of tanks should not be installed near the window bedrooms, especially a water pump, Best solution is to relocate your tank or isolate it far from your bedroom window. Thank you Enricogala, Building for the first time,and never thought of this issue. I am not sure it is the issue with pump, when I stand next to the tank, there is not much noise, however inside the house it is bit more louder. Do you think relocating the tank will be a costly exercise? Re: Noisy water pump from rainwater tank 11May 08, 2023 10:20 am ![]() I am in Sydney I am in Melbourne. Given that you have a submersible pump and a pressure tank, I can only assume that the cause is due to the mains water switching device. RainBanks are notoriously inventive, do you have a Davey RainBank installed and can you hear the noise also coming from it? Also, is the noise inside the house in the walls or is it coming from the cistern? Does the cistern fill at a normal rate or is it slow to fill? 3in1 Supadiverta. Rainwater Harvesting Best Practice using siphonic drainage. Cleaner Neater Smarter Cheaper Supa Gutter Pumper. A low cost, siphonic, eaves gutter overflow solution. Re: Noisy water pump from rainwater tank 12May 08, 2023 10:53 am ![]() ![]() I am in Sydney I am in Melbourne. Given that you have a submersible pump and a pressure tank, I can only assume that the cause is due to the mains water switching device. RainBanks are notoriously inventive, do you have a Davey RainBank installed and can you hear the noise also coming from it? Also, is the noise inside the house in the walls or is it coming from the cistern? Does the cistern fill at a normal rate or is it slow to fill? Thanks H2O. The noise is coming from the wall where the rainwater connection is. the sound is much louder inside compared to outside The cistren will fill in 2-3 minutes. I am not sure about whether they have installed a Davey RainBank or not, all I can see( attached) photo Like ⋅ Add a comment ⋅ Pin to Ideaboard ⋅ Thanks again Re: Noisy water pump from rainwater tank 13May 08, 2023 11:33 am That looks like an Acquasaver that connects to the two copper pipes and to the pump supply pipe. They are a very good product that operates by the mains water hydraulic pressure. As such, it does not require electrical power. Look it up online. I am confident that you do not have a pressure tank. If not, then the pump should be operating every time there is a demand unless the tank is near empty. In that case, the Acquasaver will switch over to mains water. Cisterns fill at about 6 lpm and so a 2-3 minute fill time is slow. A major but common submersible pump installation fault is when the installer simply lowers the pump onto the tank's floor where it spends its life vacuuming the floor in its near vicinity. Some submersible pumps draw water from above the floor but those that draw water from the floor should be placed on a platform that is raised above the sediment layer. I can't see any filters in the photo, it's possible that the cistern's valve stem may have a partial blockage which is causing it to slow fill and the noise from the motor is being transferred through the pipes. I am grasping at straws here because I am not on site but you need to make sure that the pump is properly positioned if it does draw water from the bottom in any case. If you uncouple the pipe and lift the pump to check its suction area, don't lift it by its electrical cord. Like ⋅ Add a comment ⋅ Pin to Ideaboard ⋅ 3in1 Supadiverta. Rainwater Harvesting Best Practice using siphonic drainage. Cleaner Neater Smarter Cheaper Supa Gutter Pumper. A low cost, siphonic, eaves gutter overflow solution. Re: Noisy water pump from rainwater tank 14May 11, 2023 9:12 am ![]() That looks like an Acquasaver that connects to the two copper pipes and to the pump supply pipe. They are a very good product that operates by the mains water hydraulic pressure. As such, it does not require electrical power. Look it up online. I am confident that you do not have a pressure tank. If not, then the pump should be operating every time there is a demand unless the tank is near empty. In that case, the Acquasaver will switch over to mains water. Cisterns fill at about 6 lpm and so a 2-3 minute fill time is slow. A major but common submersible pump installation fault is when the installer simply lowers the pump onto the tank's floor where it spends its life vacuuming the floor in its near vicinity. Some submersible pumps draw water from above the floor but those that draw water from the floor should be placed on a platform that is raised above the sediment layer. I can't see any filters in the photo, it's possible that the cistern's valve stem may have a partial blockage which is causing it to slow fill and the noise from the motor is being transferred through the pipes. I am grasping at straws here because I am not on site but you need to make sure that the pump is properly positioned if it does draw water from the bottom in any case. If you uncouple the pipe and lift the pump to check its suction area, don't lift it by its electrical cord. Like ⋅ Add a comment ⋅ Pin to Ideaboard ⋅ Really appreciate your help H2O. I tried to check the pump, however it is not connected using a flexi pipe, so I was unable to lift. I can see it is sitting at the very bottom of the tank and some mud around it. I will pass the information you have provided, to my plumber. I may request him to place the pump on a platform and install a sediment filter before the water pass through the Acquasaver valve. Do you think this will be sufficient? Thanks again Re: Noisy water pump from rainwater tank 15May 11, 2023 10:27 am If the pump draws water from the bottom like the one in the photo, it needs to be on a platform above the sediment layer. Unfortunately, you need to identify whether it does this otherwise raising it won't be necessary and an unnecessary cost. If it does draw water from the bottom, the floor around the pump will be clean. If there is sediment right up to the pump, the water will be drawn from higher up unless you are looking at it shortly after it has rained and water falls into the tank at a height above the tank and near to where the pump is. Having a filter fitted is a good idea but this is easy to do yourself or maybe ask a friend rather than pay a plumber. You could fit a wye filter on the horizontal pvc pipe between the elbow and the valve socket. Like ⋅ Add a comment ⋅ Pin to Ideaboard ⋅ 3in1 Supadiverta. Rainwater Harvesting Best Practice using siphonic drainage. Cleaner Neater Smarter Cheaper Supa Gutter Pumper. A low cost, siphonic, eaves gutter overflow solution. Re: Noisy water pump from rainwater tank 16Jun 09, 2023 8:01 am Thanks H2O for your valuable suggestions. My plumber came and replaced and Aquasaver valve and the random noise is gone. There is some noise from the pump, but it is not that worrying. Thanks again. Re: Noisy water pump from rainwater tank 17Jun 09, 2023 10:13 am Very unusual for an Acquasaver valve to be faulty. Maybe contact the Beltrami Group and offer to send it to them so they can find the cause. http://www.acquasaver.com.au/ 3in1 Supadiverta. Rainwater Harvesting Best Practice using siphonic drainage. Cleaner Neater Smarter Cheaper Supa Gutter Pumper. A low cost, siphonic, eaves gutter overflow solution. Re: Noisy water pump from rainwater tank 18Jun 14, 2023 9:53 am ![]() Very unusual for an Acquasaver valve to be faulty. Maybe contact the Beltrami Group and offer to send it to them so they can find the cause. http://www.acquasaver.com.au/ My plumber told, he has installed more than hundred Acquasaver valves and this is the second one had issues with, anyway he took it back and going to claim the warranty. Thanks again for your valuable suggestions. Re: Noisy water pump from rainwater tank 19Jun 14, 2023 9:58 am ![]() ![]() Hello, We've just moved into our new house. Our rainwater tanks are connected to the toilets, I've noticed when we flush it is quite noisy. The pump is not engaged every time when we flush, I think it will activate when the entire water from the pipe is used. And the noise will be there for 5-10 minutes. Our master bedroom is close to the rainwater tank, and it is really annoying during night-time. Our pump is placed inside the water tank. Is there a way to reduce the noise or limit the intake from the tank only during the daytime. Any help will be appreciated. This sound like rattling inside your tank caused by a defective worm pump damage cavitation, maybe you need to replace your water pump Thank you plumbingdoctor, My plumber replaced the Acquasaver valve, and the noise is gone for the time being. The tank is empty now and if the noise comes back, I will request him to check the pump. Thanks again That's brilliant would appreciate if you have you can locate the other doc so I can use it with my discussion with the building surveyor 10 3813 Grate, thank you! RexChan if thats the reason i could sleep well without thinking about additional cost. But 1st i'll need to read about NRV cleaning/replaing stuff. I… 7 33193 Plumbers are not trained in rainwater harvesting best practice, they just copy each other. Using a cut down milk crate is a good option as it has a perforated base. 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