Any Electricians on here?

Mgaz · 15th April 2018, 10:14

need some advice with wiring this well water pump up to a UK mains supply.

Somebody told me Live to U1 and Negative to W1 ?

Pump is trying to move in the correct direction upon first switching on the power, but otherwise no movement and just humming from the motor.

Its a mono pump CMS241/H13F

HarryM1BYT · 15th April 2018, 10:29

You need to be researching 'capacitor start, single phase motors', of which I have zero experience, but this might help....

Phone the manufacturer +44 (0)161 339 9000 (24 hrs) or email [email protected]

Warning - don't let it just buzz for more than a second, you will burn it out.

impvan · 15th April 2018, 11:14

You were told correctly - Live to U1, Neutral to W1.

Make sure the two links are in place - U2 to V1, and V2 to W1.
Make sure the capacitor is present, and connected W2 and U2.

If you can access the impeller, try turning it by hand without the power on - the seals can get a bit tight in storage.

The pump is likely to be a 'permanent split capacitor' arrangement, so it's like the drawing that Harry's given you, but without the switch.

Brunty · 15th April 2018, 11:17

Same symptoms with central heating pumps, faulty capacitor will cause the pump to buzz but not turn. You can try tapping the pump to see if it will start, but replacing the capacitor is the only long term fix, unless the bearings have seized.

picky747 · 15th April 2018, 11:21

Are your carpets really that wet?

HarryM1BYT · 15th April 2018, 12:05

Quote:

Originally Posted by impvan

If you can access the impeller, try turning it by hand without the power on - the seals can get a bit tight in storage.

I don't think that will be possible - the pump uses a clever arrangement of a helix / like a corkscrew shaft, which runs in a soft, but tough rubber like shaped outer sleeve.

T-Cut · 15th April 2018, 12:15

Quote:

Originally Posted by HarryM1BYT

the pump uses a clever arrangement of a helix / like a corkscrew shaft, which runs in a soft, but tough rubber like shaped outer sleeve.

The chemical industry vernacular is a 'pig's tail' pump.
I believe the diesel UBP is the same principle.

TC

Mgaz · 15th April 2018, 18:08

Quote:

Originally Posted by Brunty

Same symptoms with central heating pumps, faulty capacitor will cause the pump to buzz but not turn. You can try tapping the pump to see if it will start, but replacing the capacitor is the only long term fix, unless the bearings have seized.

Is there a way to test the capacitor?

My feeling was also that maybe the capacitor is faulty. But.. Its a brand new £500 pump as our old one started leaking and was noisy and stopped being able to draw the water properly from the well.

Could the Cap just be bad from the factory?

We have a multi meter somewhere, if you can tell me what it needs setting to, to test it.

thanks for everybody's help btw

Blackrose · 15th April 2018, 19:08

You can test it bit you need a bit of kit to do it. If it's not turning contact the supplier.

here is a link

http://en-us.fluke.com/training/trai...ultimeter.html

Blackrose

mbonwick · 15th April 2018, 21:46

Quote:

Originally Posted by Mgaz

Could the Cap just be bad from the factory?

YES! I've just been through the pain of buying & returning 5 capacitors for a pressure washer because they were 'bad' (less than 20uF measured, nowhere near the 35uF stated). In the end I gave up and ordered a 40uF, which was 'good' and works fine.

15th April 2018, 10:14	#1
Mgaz Gets stuck in MG ZT190, MG ZS TD, MGF VVC, R200 TD bubble, Austin A35 Join Date: May 2017 Location: shrewsbury Posts: 648 Thanks: 530 Thanked 82 Times in 56 Posts	Any Electricians on here? need some advice with wiring this well water pump up to a UK mains supply. Somebody told me Live to U1 and Negative to W1 ? Pump is trying to move in the correct direction upon first switching on the power, but otherwise no movement and just humming from the motor. Its a mono pump CMS241/H13F __________________ They say you should never meet your Idols. Well.... you know that car you always wanted? https://www.youtube.com/channel/UCGx...zZeAsYRU9aZu-A ^Be kind, Subscribe^ (MGR videos )

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HarryM1BYT This is my second home 75 Contemporary SE Mk II 2004 Man. Sal. CDTi 135ps, FBH on red diesel, WinCE6 DD Join Date: May 2010 Location: Leeds Posts: 17,273 Thanks: 2,160 Thanked 2,061 Times in 1,586 Posts	You need to be researching 'capacitor start, single phase motors', of which I have zero experience, but this might help.... Phone the manufacturer +44 (0)161 339 9000 (24 hrs) or email [email protected] Warning - don't let it just buzz for more than a second, you will burn it out. __________________ Harry How To's and items I offer for free, or just to cover the cost of my expenses... http://www.the75andztclub.co.uk/foru...40#post1764540 Fix a poor handbrake; DIY ABS diagnostic unit; Loan of the spanner needed to change the CDT belts; free OBD diagnostics +MAF; Correct Bosch MAF cheap; DVB-T install in an ex-hi-line system; DD install with a HK amp; FBH servicing. I've taken a vow of poverty. To annoy me, send money. Last edited by HarryM1BYT; 15th April 2018 at 10:58..

15th April 2018, 19:08	#9
Blackrose Loves to post Rover 75 Saloon Join Date: Apr 2015 Location: Stockton - On - Tees Posts: 367 Thanks: 55 Thanked 119 Times in 88 Posts	You can test it bit you need a bit of kit to do it. If it's not turning contact the supplier. here is a link http://en-us.fluke.com/training/trai...ultimeter.html Blackrose Last edited by Blackrose; 15th April 2018 at 19:13..

15th April 2018, 11:14	#3
impvan Avid contributor ZT-T Join Date: Aug 2012 Location: In the trees, near Caernarfon... and frequently Aberdeenshire, and sometimes Romania.. Posts: 143 Thanks: 5 Thanked 36 Times in 29 Posts	You were told correctly - Live to U1, Neutral to W1. Make sure the two links are in place - U2 to V1, and V2 to W1. Make sure the capacitor is present, and connected W2 and U2. If you can access the impeller, try turning it by hand without the power on - the seals can get a bit tight in storage. The pump is likely to be a 'permanent split capacitor' arrangement, so it's like the drawing that Harry's given you, but without the switch.

15th April 2018, 11:17	#4
Brunty Loves to post Rover 75 Saloon Join Date: Mar 2017 Location: Newtown Posts: 417 Thanks: 273 Thanked 95 Times in 65 Posts	Same symptoms with central heating pumps, faulty capacitor will cause the pump to buzz but not turn. You can try tapping the pump to see if it will start, but replacing the capacitor is the only long term fix, unless the bearings have seized.

15th April 2018, 11:21	#5
picky747 Gets stuck in ROVER Join Date: Sep 2008 Location: Vera Posts: 746 Thanks: 56 Thanked 111 Times in 85 Posts	Are your carpets really that wet?