Where can I get the Sound proofing Box?
If Cover by Box, will the motor overheating?

Usually low power water pump is designed to cool itself by water flow.

Anybody know how to DIY service the CM5-4PT diagphram pressure tank? Like how to pump air in and to what pressure?

Plan to DIY maintain my Grundfos pump.

1) Turn off incoming water and electricity.
2) Turn on a tap to release pressure and make sure pressure gauge drop to 0
3) Pump in 22 psi into the pressure tank
4) open back the incoming water supply
5) Turn back on the electricity



This post has been edited by zheilwane: Feb 23 2017, 12:47 PM

Didnt know that there's a pressure tank that need some maintenance. Thot that the pump is just pure pump only. How often did you need to reset the pressure?

CM5-4PT --> PT = pressure tank

if CM5-4PM1 ---> PM1 = Pressure manager (no tank)

tank best to pump once a year or grundfos recommend 10 months

Thanks. Just need a bit more info, do you know the steps to fill up the tank? Can use like a mini air compressor or a bicycle tire pump?

bicycle pump and you need a gauge to check the psi in the tank after pumping

Good Morning Guys,
Anyone know alternative pump service people for Grundfos pump? Mine does not want to switch off and intermittently the water that comes out is hot. Called Grundfos and they only can come on Monday. (Service Charge RM180 and extra for parts changed)
Weekend without pump banyak susah.
Thanks
Suren

water comes out hot most probably pump overheat (running non-stop), cause could be leaking pipes or pressure manager faulty.

Do turn off electricity if you are not using the pump, if you notice the pump is running non-stop. If pump overheat and mech seal spoil = it is as good as buying a new pump, fixing cost like a new pump.

Climb up to the pump and check if the center part is leaking or not, if yes = mech seal spoil already = can buy new pump

This post has been edited by zheilwane: Feb 24 2017, 09:43 AM

Ok Bro thanks. As soon as i heard it continuously running i stopped it and hv switched it on to test occasionally to see if ok or not.
I hope Mech Seal not spoilt.(No leaks at ceiling where pump is located) fingers crossed. No choice hv to wait for Grundfos on Monday to see verdict.
If new pump required will contact you. Old pump asl bought from you.
Thanks

Great thanks for the info. I try to DIY tomorrow.

if over warranty, i would not recommend get grundfos to check, you will need to climb up yourself to c c first, or else you gonna waste the RM 180 service charge. they didnt do anything just climb up c also charge RM 180

This post has been edited by zheilwane: Feb 24 2017, 01:18 PM

Hi.

1. Say I would like to install the water pump similar to the sketch and also would like to install a centralized water heater for my bathroom, how does it works in terms of the pipe routing?

2. Shouldnt the by pass connect from the water tank? else when i turn on the pump, the water still will flow through the by pass pipe isnt it?

This post has been edited by MoneyMaker prince: Feb 26 2017, 09:53 AM

It worked I managed to charge the tank with a bicycle pump. I followed the instruction on the tank itself. Bleed the water inside the tank by turning off the water inlet to the pump. Then I check the pressure it was 20psi only. Following that, I charged it up to 0.9 X cut in pressure for CM5-4PT which was 26psi as per the Grundfos technical manual. Very simple and easy to do.

hye bro zheilwane,

my house is single story, but the direct water pressure is not consistent..sometime good pressure, sometime less pressure.

can recommend the suitable type of pump?

only got 1 bath and 1 toilet..

grundfos CM3-4PM1 is sufficient already, recommended to install next to water tank not direct from main

Hello all,

Any recommendations on which Grundfos water pump to use for 3.5 story house with 5 bathroom. All using rain and hand shower with central water heater.

My water pump died momentarily this morning. 1st time since moving in a year ago.

Grundfos CM3-5PM1 is sufficient but if u wan better flowrate, CM5-4PM1

Hi there. Just to check with you. My neighbor got this pump model and build in water heater. Im not sure how the water heater works. Is there such thing ?