Question about Grundfos Pumps Grundfos CH4-50 11 2Hp Multistage P

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Wiring diagram for grundfos pump - Grundfos Pumps Grundfos CH4-50 11 2Hp Multistage P

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It depends partly on your phase and voltage requirements, but here is a picture of some options.wiring diagram for grundfos pump - 8_7_2012_4_14_07_pm.png

Posted on Aug 07, 2012

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Posted on Jan 02, 2017

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Do you have grundfos JP-Rain pump exploded parts diagram?


no
you get that from the manufacturers web page

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How can shower head be above shower head , ?????????
of head is above tank it would ok its above house tank , should only have pos and neg wires .

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Grundfos pump


Louise, since there is several different types and models of Grundfos pumps it would be hard to answer your question. To possible point you in the right direction below are a few links to where you can find some PDF documentation about a popular Grundfos pump the MQ series and direct link to the manufactures "Service Support".

Service support
Grundfos MQ Series Pumps

Feb 07, 2014 | Garden

1 Answer

How to connect iton to 220 volts


http://rainwatercollection.com/download/Grundfos-Manual.pdf
From what i have researched you have to buy a 120 volt pump or a 220 volt pump you cannot wire it both ways. The pictures shown on that pdf show where to put the line 1 and line 2

Oct 10, 2013 | Grundfos MQ3-45 1 HP Pressure Booster...

1 Answer

I just recieved a grundfos add on timer for my small circulating pump the wiring diagram is not clear need some advise on how to wire


More information is needed. Add a comment.
Grundfos makes many models and many parts.
http://www.plumbersurplus.com/Prod/Grundfos-24-HR-Programmable-Clock-Timer-%28505474%29/11040/Cat/680
You do not say what wires what are available, or what the instructions say, so the expert is left guessing.

Guessing: Normally this type of timer module has at least 4 or 5 wiring terminals.
Two terminals power the clock motor, and two terminals are for the switch.
Example wiring: power from circuit breaker connects to terminals 1 and 3, line going to motor connects to terminal 4, and neutral from breaker box and neutral going to motor connect to terminal 2.
http://waterheatertimer.org/images/FM1-wiring-280.jpg
Another basic wiring plan same as described above:
http://waterheatertimer.org/images/NO-NC-timer-200.jpg

Add a comment with exact information shown in instructions, and what wires you have, and what each wire goes to.
Of add a comment with in-focus photo posted on flickr.

Open following link for recirculation system resources:
http://waterheatertimer.org/Water-heater-recirculation-system.html

Jul 06, 2011 | Grundfos 505474 24-Hour Progammable...

1 Answer

My water heater needed to be restarted and my comfort recirculation system isn't working now.I"m hoping it is just the timer. I need to reset the timer and I don't know how. I can't find my manual....


Grundfos timer and pump operate by plugging into ordinary 120V outlet.

1) If outlet has power, then dial on timer should rotate.
If dial is not rotating, then check power to outlet.

2) If outlet has power, but timer is not rotating then timer has gone bad > if grundfos pump is working but timer is not working, you can buy cheap plug-in timer and use that as the timer.

3) If outlet has power and pump is not working, then manually rotate timer dial to see if pump will start.
If pump will not start, then you need a new grundfos.
There are no repair parts for these pumps, and nobody at Fixya has reported taking Grundfos apart and repairing it.
My Grundfos pump will not come apart.

4) Following link has links to Grundfos installation manual, website, product manuals, and contact.
http://waterheatertimer.org/Water-heater-recirculation-system.html#Grundfos

5) To set timer: Grundfos timer dial has movable pins that are used to set on-off times.
When pins are pushed out, timer turns pump ON.

6) Rotate timer dial clockwise until current time lines up with arrowhead located on inner dial.
Dial rotates as time passes, and pins move a lever that turns pump on-off.

Add a comment for more free help.
Also take advantage of fixya phone service.
For a price, expert speaks with you over phone while you work on Grundfos or any do-it-yourself project.
Fixya is always less expensive than a service call.

Feb 09, 2011 | Grundfos Comfort System Recirculator ...

1 Answer

How to program timer?


Diagram showing timer tabs being pushed in or out to set programs:
http://waterheatertimer.org/Water-heater-recirculation-system.html#Grundfos

Grundfos illustrated installation guide
http://waterheatertimer.org/pdf/Grundfos-L-UP-TL-043-install-photos.pdf

Rotate programming ring clockwise until current time lines up with arrowhead on inner dial.
Current time must be reset after power outage.
Tabs located around programming ring control timer functions.
Each tab represents 15 minutes.
Tabs push in or out using a pen.
Tabs out = grundfos ON
Tabs in = grundfos OFF
Set manual switch to TIMER and timer program operates pump
Set manual switch to ON or OFF to override timer program

geno_3245_136.jpg

Dec 04, 2010 | Grundfos The UP1510B5ATLC 125th HP 1...

2 Answers

Just bought a house and it has a grundfos timer/pump attached at the hot water tank. I have no hot water and the timer doesn't turn (as I've seen other timers do). Is it supposed to turn so that the...


Grundfos is a sealed unit and not a repairable item.
The timer dial should turn.
And pins located around dial control ON-OFF functions as timer dial rotates.
geno_3245_93.jpg

Does the receptacle have power?
If receptacle has power, and Grundfos is not working, then it is broken.
Grundfos manuals for UP series pumps do not show breakdown or parts list of any kind.
http://www.us.grundfos.com/web/download.nsf/Pages

Bigger question:
Why don't you have hot water?
Is water heater functioning?
Water heater is a separate appliance from Grundfos pump.
Grundfos pump circulates hot water from tank into the lines so there is no waiting for hot water ... but hot water heater should still make hot water.
http://waterheatertimer.org/Water-heater-recirculation-system.html

Add a comment about water heater if that is also a problem.
You could have 2 problems, and water heater is main issue.

For do-it-yourself electric water heater repairs:
http://waterheatertimer.org/6DIY.html

Nov 20, 2010 | Grundfos The UP1510B5ATLC 125th HP 1...

2 Answers

Grundfos submersible well pump with Grundfos CU301 control. Control box shows no contact to pump. What is the problem or problems?


Grundfos is a p. o. s. I have a new system cu 301 and I have had to get it repaired twice by Fogle Pump and Supply. These guys are real rip of artists in Washington State and should be reported to the BBB. Dont Use Fogle if you need a well

Sep 15, 2010 | Grundfos RCP-96 Recirculation Pump for...

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