Running a Grundfos pump in isolation

[purpss]

Hello all, not really a plumbing question, but thought you guys would know.

I have an old traditional Grundfos C/H pump from my old system which I want to run in isolation. I've wired a plug on the end, and when I plug it in - nothing. Does it need a timer to work? What is the timer actually doing?

Cheers,
Matt.

 

[Phill Peck]

If it doesn't work either
It's broken
You've wired it wrong
The fuse in the plug has blown.

What are u trying to do with it?

 

[purpss]

Thanks for the reply.

I have two and both do the same thing - of course, they could both be broken.

I haven't wired it wrong.

Fuse is fine, pump is definitely getting juice.

Pumping stuff!

Cheers,
Matt.

 

[Dan Robinson]

Pumping stuff!

????

 

[Newboy]

Do you think that it broken because:

a) Whatever you're trying to pump isn't moving or

b) The rotor isn't going round

A better description of the device is a circulator rather than a pump

 

[Madrab]

Pumping stuff, now there's a broad description.

Your grundfos central heating pump, as newboy suggest, is really only good for circulating water around a ch/hw circuit, it won't be any good for raising/moving fluids as in a bilge or grey water pump. It needs primed with fluid and acting upon a liquid within a circuit to work correctly, it's not designed to say transfer liquids from one area to another.

That being said, does the impeller spin freely?

 

[purpss]

Thank you all very much for the replies.

Yes how effective it is as a pump was a concern of mine, but thought I'd try it.

I'm trying to move fluids from one place to another as you say.

The reason I think it's broken is because it makes noise or any vibration when I plug it in
Yes the impellors moves freely.

I am willing to accept I have two duff pumps, providing there is no electrical reason for them not working straight off a plug!

Any free/cheap pump suggestions? My plan was to make a nozzle/pump arrangement so I can fill up the car with veg oil from an oil drum.

Cheers,
Matt.

 

[bernardgreen]

http://www.bellflowsystems.co.uk/aluminium-lever-hand-pumps-suitable-for-most-fuels-j3016.html

 

[Agile]

Does the pump take current from the mains supply?

The capacitor may be failed.

Have you tried to rotate the speed selector switch?

Tony

 

[Newboy]

I am willing to accept I have two duff pumps, providing there is no electrical reason for them not working straight off a plug!

I'd suggest that they aren't duff - you're trying to pump a comparatively thick liquid rather than circulate water.

 

[purpss]

They definitely were not running - I could see the vanes not moving.

Anyhoo, thank you very much for replies, especially @bernardgreen for the link, it lead to a journey of discovery which ended in me buying a drill-powered heavy-duty pump off eBay for about a tenner which is doing the job perfectly.

Cheers,
Matt.

 

[muggles]

Any free/cheap pump suggestions? My plan was to make a nozzle/pump arrangement so I can fill up the car with veg oil from an oil drum.

Cheers,
Matt.

I'd be interested to know how long your car lasts after doing this!

 

[purpss]

I have already done nearly 30k miles over 2.5 years. The car will last just fine providing you know what you're doing. I did my research before I started to avoid any issues. There was one issue that I knew would rear its ugly head - piston ring gumming. I made a decision to blend my fuel in specific quantities and service at a specific interval in an experiment to see if the problem could be combatted. Well it made it nearly 2 years with no real special treatment before the old girl started having problems. After sorting out the gummed up piston rings I have now introduced a water injection technique during the 6 monthly service which should keep the pistons rings in rude health.

But of course, it could blow up tomorrow.

Cheers,
Matt.

 

[FiremanT]

What do your neighbours think of the smell?

Are you suppose to voluntarily pay tax (I seem to recsll an issue some years ago)

 

[muggles]

You can use up to 2500 litres tax-free IIRC