Does this model require to pump air manually via bicycle pump every year too? Since it has pressure tank too?

yes but according to supplier, tank so small, if didnt pump air in also wont cause any issue, previous uni E version tank bigger if didnt pump after few years pump slow kick in

Asked one company they recommended

PRODN Intelligent Inverter Water Pump | Self-Priming Multi-Stage Centrifugal Pump | CHM3-4Z

Is this a good brand, local brand ? He quoted RM1699 just for the pump. Said Grundfos model would cost 4k+.

Hi there, I bought a Scala2 in Dec 2022. It can send water to my direct piped fixture but is not able to work well with my roof top tank. Each time I use the garden tap, the bathroom flush or tap that are connected to the roof top tank, Scala2 will show leakage error.
I was told that SCALA2 just is not suitable for roof top tank as it's a pressure pump that will be confused by the roof tank's inlet float arm moving up and down while water is being filled up. I have been advised to use either SCALA1 or cmb3-5 pt pump together with float sensor that's based on water level rather than pressure.

May I know how you configured your SCALA2 to work with roof storage tank?

check the tank's float, if it is dripping change to a better 1.

can also add a pressure tank next to ur scala2.

Hi bro, in video say close to rm3k but why in website stated rm6k? It's double!

price increase d, better buy quick as grundfos jus announce another increase 1st march 2022. Will PM u special price lower than 5k

This post has been edited by zheilwane: Feb 17 2022, 09:32 AM

Increase by double in less than 1 year??

yes, u can check lazada and shopee to get market price, really increased a lot. not just grundfos, many other products will keep increasing this year

Have u try to slow down the fill up of the tank. In my case on unrelated issue, I can slow down the tank refill quite significantly, almost to off position without any issue of water running out. There is 3 adults in my house. The tank will just slowly refill throughout the day.

anyone have experience with GI piping and installing with water pump ?

because old parent house with old GI piping scare after install water pump will cause leakages

with old house safer i think to use a water heater with built in pump. if it really burst if u install tank side pump, the repair cost might cause additional headache. jst my 2 cents

For a 2.5sty house, roof top tank with 3 bathrooms and only 3 people resides, is scala2 recommended? Spoke with grundfos northern and the CS mentioned not recommending Scala2 because of too many issues reported from customers and suggested CMB model instead especially that CMBE inverter.

Scala2 owners, how is your pump working?

Just to share, many customers are not aware that the Grundfos pumps are not meant to be installed outdoor under rain except for SCALA2 and SCALA1.

For outdoor you will need to cover your water pumps. Even if you are using scala2, it is recommended to cover it for extra protection.

Been selling water pumps for many years and came across many types of cover

1) Stainless steel, high grade ones are just too costly ard rm 600+ to custom made. Low grade ones might rust in future

2) Mild Steel, cheap but sure rust once the paint worn out or peel off.

3) Zinc, too light, flimsy and might rust as well in future.

Well, as there is no ready supplier for a good and affordable pump cover, i have no choice but to get a factory to manufacture one for me. After months of searching, we finally came out with this new design. This design and size is suitable for Grundfos CMB-PM series such as CMB3-37pm1, CMB3-46pm1 and also CMBE series such as CMBE3-62, CMBE5-62. NEXT project will be anti vibration pad, same reason, there is no better one available yet, so no choice, nd to custom order again. Any1 here have vibration noise issue even after adding the standard anti vibration pad?



This post has been edited by zheilwane: Mar 11 2022, 10:26 PM

CMBE very very expensive ooo.. the price went up almost 2times...

Will it make sense to 3d print a cover perhaps?

How much would it cost to 3D print something like this size?

Can 3d print metal?

Might have chance to melt under very hot sun. Plus plastic becomes brittle over time once exposed to sunlight for a long time.

PETG is uv resistant and have a melting point of 230c. I haven't heard of it became brittles with the continuous expose to the sun, discoloration yes but that's about it.