seems like its like branded oversea.. esp in UK... but not here..

care to share the model and the price that you bought so we can use it as a guide ?

Italino brand usually reliable but expensive and consume much power. Care to share the spec and price?

Rm930 pump itself. Model have to look for the receipt.

Hi,

Regards to Hitachi pump, i was being inform that 180gx model has been replace by 150gx, 200 till 250gx.

the 180gx is a constant automatic water pump, the rest are normal water pump.

will like to know what is the side bladder tank for? what is the purpose of it? better to get 1 unit comes with bladder tank and which is more easier to maintain (bladder and non bladder tank)

Thanks!

so basically, grundfos is a more recommended pump compare to others huh? brands like hitachi or panasonic? and moreover you can install it on the roof, which is outside the house.

what other brands comparable to grundfos, with similar specs, are good in your opinion?

so why you say gundfos is overkill compare to hitachi? you stay in double storey?

what you suggest for a landed property, double storey with 3 rooms and 2 bathrooms should use? i'm not using rain shower, just normal hand shower.

---

Added on June 21, 2012, 5:16 pmwhere do you purchase it? compare to the grundfos model, which is quieter?

This post has been edited by luckykid5: Jun 21 2012, 05:16 PM

You cannot install pump outside the house exposed to sun and rain. You must provide cover.

I have experienced only grundfos and panasonic. Dont know about others. For panasonic you can install a bladder tank to reduce the frequent on/off but still it is noisy to be on the attic (between roof and ceiling).

Bathrooms (shower, toilet and wash basin) water are supplied by tank. Since the tank sit just above the upstair toiler the pressure is very very low as low as 5 psi. So people re-do the piping with main supply. In such case the tank water can never be used and turn dead water. One of the way to increase water pressure and same time using tank water is install a pump next to the tank. The pump draw water from the tank instead of direct main pipe. When you install pump on ground still the problem remains that you still need to re-connect main supply to bathroom and tank water goes dead. That explains why people pay so much RM1k plus when they can pay only RM400.

so grundfos is lesser noise compare to panasonic huh?

another question on the 1k plus and rm400 installation. i do know that if you install a water pump next to the tank, it will greatly increase the pressure to all the upstairs bathrooms like you mentioned. but why some pays rm1k and some pay rm400? what is the right way to install?

also, some have water tanks above the roof. then what is a good way to install it then?

RM1K plus refers to the price of a grundfos pump. RM400 refer to a Panasonic pump. Not the cost of installation or labour/pipe materials.

Not because install near tank increase pressure. It is because the tank sit at the top of ceiling/roof. The pump do not need to pump water up and lose at least 10psi of pressure. Instead the pump pumping water down and increase its pressure. Let say you throw stones with your hand. One throw from roof down on you and you throw up to him. With no effort he can just drop the stone and still the stone come down with force. if he uses full hand force throwing the stone at you you die if it hit your head. On the other hand you must use force and if you use full force still it is not as forceful. Who is at disadvantage? You la at the ground. Xun Zi said never engage battle with your enemy when your enemy is at high ground. Their arrow is double, 3 times the force. Their aim are few times more accurate. their swords are forceful, their spear can penentrate your armor. Whatever they throw at you stone, rock, arrow you cannot block. You will be tired climbing the hill and be killed.

---

Added on June 22, 2012, 9:38 amYou can install above the roof so long you provide cover from rain and shine. What i will do is to install below the roof with a pipe down from the tank above the roof. No need to be side by side with the tank.

This post has been edited by stevie8: Jun 22 2012, 09:38 AM

The pump that use in average home here call surface pump or booster pump. It mean to use to boost the pressure water for your entire house. Surface/booster pump cannot run dry as it will spoil the mechanisim inside. It also have a height limit of sucktion in inlet.

So the best way to instal is beside or below the water tank. In this way, the pump inside will alway have water and some small pressure inside for the pump primeming.(Easy start water pressure boost and water act as coolant for the pump mechanical)

If you want to boost the water up to your roof water tank, than your pump must install at the downstair main water supply pipe. Which the main pipe always have water and small present of pressure. But remind you that this kind of installation is illegal if I not mistaken. It can cause your neighbour low water pressure and get complain.

The price of the pump different of course got to do with quality, R&D, reputation, specification and durable. Just like proton car and benz.

Get the brochure or catalog of the pump and compare the specification. Check which 1 you willing to pay.

i got it for my single story semi d...

if double story and your pump put at ground floor.. then you need more power... water is heavy == more power = better

for me single story.. max pump height 2.5 meters.. the hitachi that i got is more then enough for me, both pumping height/sucking height..

as for me i install it in my bathroom.. just above the the door eg 40 cm about that height.. easier to fix/service and what not... no need climb into attic get dirty/dark and shit... (i did it that way cause i DIY the installation)

do note that installing in a confined space eg bathroom, will amplify the sound.. for me i want to hear my pump run so that i know.. if i have a leak or the pressure switch faulty or what not


yes always check the specification it will really tell you alot..

where do you purchase it? compare to the grundfos model, which is quieter?

[/quote]
I have no idea which is quieter as I don't have any experience with Grundfos. Bought it in Melaka. Hope it helps...

You can check the pump pressure & noise level either by showroom visit to the shops or during exhibition event where they put demo pumps...lots of diff brand outside see which can give you after sales service beside $$ and pump performance.

This is some sample of event http://www.facebook.com/photo.php?fbid=254...&type=3&theater

[quote=stevie8,Jun 22 2012, 09:23 AM]
RM1K plus refers to the price of a grundfos pump. RM400 refer to a Panasonic pump. Not the cost of installation or labour/pipe materials.

Not because install near tank increase pressure. It is because the tank sit at the top of ceiling/roof. The pump do not need to pump water up and lose at least 10psi of pressure. Instead the pump pumping water down and increase its pressure. Let say you throw stones with your hand. One throw from roof down on you and you throw up to him. With no effort he can just drop the stone and still the stone come down with force. if he uses full hand force throwing the stone at you you die if it hit your head. On the other hand you must use force and if you use full force still it is not as forceful. Who is at disadvantage? You la at the ground. Xun Zi said never engage battle with your enemy when your enemy is at high ground. Their arrow is double, 3 times the force. Their aim are few times more accurate. their swords are forceful, their spear can penentrate your armor. Whatever they throw at you stone, rock, arrow you cannot block. You will be tired climbing the hill and be killed.

---

Added on June 22, 2012, 9:38 amYou can install above the roof so long you provide cover from rain and shine. What i will do is to install below the roof with a pipe down from the tank above the roof. No need to be side by side with the tank.

[/quote]
thanks for the detailed explaination. so i guess, if my external water tank is on top of my roof, it would be better if i put my water pump inside my roof (can leverage on the gravity force), or can install side by side with the water tank, provided i build something to cover that water pump from rain and shine.

but basically, i guess better recommendation is install beneath the tank huh?

[quote=ozak,Jun 22 2012, 09:47 AM]
The pump that use in average home here call surface pump or booster pump. It mean to use to boost the pressure water for your entire house. Surface/booster pump cannot run dry as it will spoil the mechanisim inside. It also have a height limit of sucktion in inlet.

So the best way to instal is beside or below the water tank. In this way, the pump inside will alway have water and some small pressure inside for the pump primeming.(Easy start water pressure boost and water act as coolant for the pump mechanical)

If you want to boost the water up to your roof water tank, than your pump must install at the downstair main water supply pipe. Which the main pipe always have water and small present of pressure. But remind you that this kind of installation is illegal if I not mistaken. It can cause your neighbour low water pressure and get complain.

The price of the pump different of course got to do with quality, R&D, reputation, specification and durable. Just like proton car and benz.

Get the brochure or catalog of the pump and compare the specification. Check which 1 you willing to pay.

[/quote]
ok ok. thanks for the explanation. i wouldnt go for the illegal one, especially later cause more arguments with my neighbours. best is side by side, or below the water tank as you said huh.

btw, besides grundfos, you heard of maxflow from hydro1? i heard hydro1 has been in malaysia more than 10 years and as reliable as grundfos. price quite identical, but grundfos parts from germany, and maxflow from taiwan. any good?

[quote=JinXXX,Jun 22 2012, 04:34 PM]
i got it for my single story semi d...

if double story and your pump put at ground floor.. then you need more power... water is heavy == more power = better

for me single story.. max pump height 2.5 meters.. the hitachi that i got is more then enough for me, both pumping height/sucking height..

as for me i install it in my bathroom.. just above the the door eg 40 cm about that height.. easier to fix/service and what not... no need climb into attic get dirty/dark and shit... (i did it that way cause i DIY the installation)

do note that installing in a confined space eg bathroom, will amplify the sound.. for me i want to hear my pump run so that i know.. if i have a leak or the pressure switch faulty or what not
yes always check the specification it will really tell you alot..

[/quote]
true also. so i guess, since mine is double storey, would make more sense to get a higher power huh. any other good brands to recommend?

[quote=leeandy,Jun 22 2012, 10:21 PM]
where do you purchase it? compare to the grundfos model, which is quieter?

[/quote]
I have no idea which is quieter as I don't have any experience with Grundfos. Bought it in Melaka. Hope it helps...

[/quote]
oh thanks.

This post has been edited by luckykid5: Jun 24 2012, 06:00 PM

Hi,

My Grundfos pump is about 3 years old now. I have a major problem - the pump wont stop running, as in continuosly working. And if i switch it off, i wont have water in my bathrooms upstairs. And after i switch it on, it makes a funny sound and continues to run and run, wont stop.

Can you help me by sending your plumbers or workers to help me look at the pump?

You have done such good job based on the replies from th forumers, so i will trust you will help me solve this proble.

Thanks!

Karine

the pump switch/pressure switch rosak already...

Did you have a direct main by-pass? If you have a bypass it could be due to broken valve, the one way valve, that the pump is pumping to the main supply and could not achieve the desired set pressure high enough to stop. Swtich on the pump and go to your main meter and see if the meter is running backward.

There are many other possibilities. You want help you got to tell more like showing us a photo of your pump connection or draw how it is connected. Water is drawn from tank or main, etc and to all bathroom? You mean downstair bathroom have water without the pump running? What funny sound? the pump is sucking air?

After Tank. You need to pump water to solar heater for it to work.

Got my Pump a few months ago, officially only tested yesterday as I have just filled the water tank with water...CM3-5PC from Zein of Builder's Hardware..

First review, water is super powerful....however, there is a humming sound...I think it's slightly loud..anyone got any insights on the same model ?

-----------------------
Additional Stuffs :

Upon posting this question (tot of just asking around). Zein of Builder's Hardware gave me a call straightaway and ask me to check a few things to ensure that the humming is okay...

Thanks Zein, really thumb's up for BUILDER'S HARDWARE, great after sales service. never expected to get a call...really appreciate it


I will go up to the roof and check if the installation is correct as suggested by you and will revert...once again..thank you for the call.....

This post has been edited by coconutzz: Jul 30 2012, 04:12 PM

a friend of mine told me that grundfos company produce 2 brands of water pump.

1 is Grundfos water pump (made from TW) and another 1 is Gemini water pump (made from Italy). logically made from Italy should be better than TW right?

u guys heard of it?

Both are managed by Grundfos, the have same standard for QC, why must ITALY things must be good? Should look more on the spec and material used rather than the origin. FYI, Grundfos is reputable for their original pumps (GRUNDFOS). Gemini was bought over by Grundfos.