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> [WTA] Grundfos Water Pump, CH-PT or CH-PC

Gaza
post Dec 29 2017, 03:52 PM

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QUOTE(halcyon27 @ Dec 26 2017, 04:35 PM)

Sums it up pretty much in principle. The vibration will be transmitted outwards from where the pump is located. If not attenuated, it might be nuisance at best or the pump night be prone to "walking" or be transmitted along the piping. For that where piping is known to hit the other part of the roof support, place a small piece of anti vibration mat (cut to size) in between to shield it from this tendency.

Note: everyone upstairs might still hear the pump's soft humming when it's operating. That can't be avoided but if your plumber has done something marvellous that reduced the humming such that the only time you're aware that it's operating is when you're directly under it, do share. I want to know how also.
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Do you know which shops to find these kind of vibration mats?
halcyon27
post Dec 29 2017, 04:19 PM

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QUOTE(Gaza @ Dec 29 2017, 03:52 PM)
Do you know which shops to find these kind of vibration mats?
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Where you buy the pumps they will sell else ask your plumber. Some models do provide one. Try online like AKTC or RS online which might sell.

This post has been edited by halcyon27: Dec 30 2017, 02:11 PM
veron4best
post Dec 29 2017, 05:08 PM

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Vibration mat.

Like this can?

http://www.lazada.com.my/8pcs-washing-mach....739810cfvVH2yt
halcyon27
post Dec 29 2017, 05:22 PM

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QUOTE(veron4best @ Dec 29 2017, 05:08 PM)
These are more like pads but suited to washing machine.

Mats are like this or this.
jepakazoid_82
post Jan 3 2018, 08:26 PM

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Hi guys, wondering whats the price range for a 1.0 HP Grundfos water pump?
crusher
post Jan 29 2018, 12:21 AM

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Guys do i need to off my water pump when not in use? Or can leave it on all year long
halcyon27
post Jan 29 2018, 07:55 AM

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QUOTE(crusher @ Jan 29 2018, 12:21 AM)
Guys do i need to off my water pump when not in use? Or can leave it on all year long
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Usually, I turn it off when not in use.
zheilwane
post Jan 29 2018, 02:23 PM

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QUOTE(jepakazoid_82 @ Jan 3 2018, 08:26 PM)
Hi guys, wondering whats the price range for a 1.0 HP Grundfos water pump?
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THat would be CM5-4PM1, market rate is about RM 2100 - 2300, u can check mudah, lelong and many other sites for price reference. Ofcoz it is still possible to get slightly lower than the online prices but for budgeting, u can use them as benchmark


This post has been edited by zheilwane: Jan 29 2018, 02:24 PM
crusher
post Jan 29 2018, 02:28 PM

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QUOTE(halcyon27 @ Jan 29 2018, 07:55 AM)
Usually, I turn it off when not in use.
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On and off wont cause damage to the machine? How long you have been on and off?
halcyon27
post Jan 29 2018, 10:17 PM

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QUOTE(crusher @ Jan 29 2018, 02:28 PM)
On and off wont cause damage to the machine? How long you have been on and off?
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As long as I had been living in my old DSH before I sold it.years later.
slimey
post Jan 30 2018, 10:30 PM


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hi........
anyone knows the precharge pressure of pneumatic tank 18 liter?
nexona88
post Feb 1 2018, 06:53 PM

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This post has been edited by nexona88: Feb 1 2018, 06:54 PM
fila97
post Jun 7 2018, 12:11 PM

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QUOTE(zheilwane @ Sep 29 2017, 03:44 PM)
PMed smile.gif

FOr normal landed houses, it is quite impossible for water to be too weak until the instant heater pump could not start. As all houses are using tank's water, hence all houses would have +- the same pressure (Gravity pressure). Few possibilities

1) Old house with clogged pipes
2) U install a rain shower system for your instant heater
3) Filter at the heater is clogged
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I removed my house's tank few years back due to leakage.
Now I'm installing one 10" and one 8" rain shower system, and have another bathroom downstairs with instant heater.
Is it necessary to get a pump?
zheilwane
post Jun 10 2018, 09:33 AM

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QUOTE(fila97 @ Jun 7 2018, 12:11 PM)
I removed my house's tank few years back due to leakage.
Now I'm installing one 10" and one 8" rain shower system, and have another bathroom downstairs with instant heater.
Is it necessary to get a pump?
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if ur main your main water supply is 2.5bar and above u can go ahead without a pump
fila97
post Jun 10 2018, 10:35 AM

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QUOTE(zheilwane @ Jun 10 2018, 09:33 AM)
if ur main your main water supply is 2.5bar and above u can go ahead without a pump
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Got it. Thanks!
kevinlim001
post Jun 12 2018, 10:13 AM

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QUOTE(zheilwane @ May 18 2015, 11:14 PM)
Most probably air lock, try opening the nut above the water inlet, let the water flow out like 5 sec then tighten it back. Turn off the pump before u do this and get some cloth to wipe it.
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Zheilwane, does this applicable to PM model as well, i found out my pump also having the issue where the pump delayed start.. i turn on the tap but water flow without pressure, it has to take a while (30 sec) before the pump kicks in. Sometime i will have to turn on other tap to "initiate" it

This post has been edited by kevinlim001: Jun 12 2018, 11:26 AM
kevinlim001
post Jun 12 2018, 11:19 AM

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QUOTE(abhipraaya @ Nov 29 2017, 03:09 PM)
I have a situation which just recently happened.

I turn on a water outlet and very low water pressure comes from that outlet. in other words, the pump didn't activate. when i turn on another water outlet, the pump activates and I start getting good pressure form both outlets. each time i have to open another outlet to activate the pump ( it takes 2 outlets to be opened to activate the pump).

This happens in all locations in my house. any idea how to solve this, is this a pump problem, if yes which part of the pump has malfunctioned? I don't think it's the motor as the pump still works, albeit, with the workaround method above.
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has ur case being resolve? i am facing the same issue
zheilwane
post Jun 12 2018, 11:55 AM

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QUOTE(kevinlim001 @ Jun 12 2018, 10:13 AM)
Zheilwane, does this applicable to PM model as well, i found out my pump also having the issue where the pump delayed start.. i turn on the tap but water flow without pressure, it has to take a while (30 sec) before the pump kicks in. Sometime i will have to turn on other tap to "initiate" it
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1) this only happen for PT (with a tank), PM should not have this issue
2) If the main water bypass is ON and ur incoming pressure is quite strong, the pump wont kick in until pressure drop to certain level (hence u nd to turn on two taps) if that is the case, turn off the main water bypass valve
3) May b PM is faulty
kevinlim001
post Jun 12 2018, 12:56 PM

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QUOTE(zheilwane @ Jun 12 2018, 11:55 AM)
1) this only happen for PT (with a tank), PM should not have this issue
2) If the main water bypass is ON and ur incoming pressure is quite strong, the pump wont kick in until pressure drop to certain level (hence u nd to turn on two taps) if that is the case, turn off the main water bypass valve
3) May b PM is faulty
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i see.. if thats the case i am seeing 3) as the prossibility.. do you have any idea how much is going to cost?

1) PM model
2) main water pressure should be stable as its getting connected from water storage tank.


Thank you bro.
zheilwane
post Jun 12 2018, 01:56 PM

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QUOTE(kevinlim001 @ Jun 12 2018, 12:56 PM)
i see.. if thats the case i am seeing 3) as the prossibility.. do you have any idea how much is going to cost?

1) PM model
2) main water pressure should be stable as its getting connected from water storage tank.
Thank you bro.
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turn off your water meter and test the showers, if that resolves the issue then turn off main water bypass

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