Hi , the grundfos pump I have seems to make noises all the time . This is even though no pipes on . Seems like it keeps trying to pump

Sounds like humming and in interval of a few seconds

I don’t recall hearing this previously though

Anyone experienced similar issue in the past ?

Hi all experts, I'm staying in New area elmina, recently just installed a grundfos CM3-4 pump, had a bad experienced with the plumber, they bought the wrong fitting and pump outlet burst to room, and leave water mark on the parcel Ceiling and the room is all wet!
Just wonder is this kind installation whether is fit or safe or not.

After that they replace the fitting.
Thanks guys

Hi guys, seeking advise.

I got a 1000litre stainless steel water tank at ground floor and 500litre PE water tank on top of the roof.
Suffering from very low water pressure due to my house a bit higher (hill side) and 3rd floor toilet rain shower totally no pressure.

My plumber suggests installing installing Grundfos after the ground floor water tank.
Grundfos will be pumping water pressure to all the rain shower and also the roof PE water tank.
PE water tank will be used for normal toilet bowl and tap water.

Is this the best method?

Hi

I had 2 Scala 2 units installed one after the other given they kept breaking down, in a similar setup as described above ie after water tank to pump to smaller tank in the roof.

Now my second unit is also sounding like it is going to stop working.. very loud sound. Does anyone have any idea of a better pump to use? I picked the scala as it is an outdoor unit but i have it installed in the main gate pillar which is hollow so maybe an indoor unit is also ok?

Any suggestions is much appreciated as i dont want to keep claiming warranty every 9 months....

Thanks!

Coz the main goes to a 1500L water tank which is quite a distance away to the main pipes going back up to the upstairs tank which then provides water to majority of the house except the kitchen one which is from the main (not my design - was built like that).  So need the ground pump to pull the water from the water tank through the filter and up to the small tank in the roof.  Else i have to redo all the piping which is a no no. 

So now looking for a reliable ground water pump since Ive given up on the Scala 2.

Yup i have setup the piping with a bypass and it is being used at the moment given the pump is not working.  Yes i could do 2 which means i remove the ground pump right but the water pressure isnt great and not sure if it will get from the 1500L  tank to the main water tank 3 stories up.

No water filter prior to the ground pump but the water in the big tank isnt stagnant all the time as water flows through there to fill the small tank in the roof.  Nonetheless I empty the tank every year for a clean.

Anyway the scala 2 has an issue with water leaking into the bearing i saw online and that sound im hearing is exactly what is coming from my pump.

Maybe option 2 will work but im not sure given water pressure is poor.

But thanks for the input...

Hi Guys,

Just got my water pump installed. Have decided to go with CM3-5 PM1 and add on Pressure Tank from my previously kaput Grundfos. 2 Bypass was made. 1 Bypass from water tank and 1 Bypass from main water inlet. So if Pump malfunction in future will still have water with decent pressure. Pump was supplied only by single source : water tank. Any comments would be highly appreciated. Thanks!

Hi guys, any idea how do i release air from the water pump? Currently my pump keep turning on even only low amount of water is used. My model is grundfos CM3-5PM1

Forgot to mention i did add on a pressure tank from another grundfos model.