Hi there!its jack

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Hi there!its jack

Post  jack125 on Thu Jul 17, 2014 3:33 pm

I cant drain my PulsaCoil3.drain valve at the bottom is blocked with scale.what do i do?can anyone tell me outhere how to deal with that,please?

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Re: Hi there!its jack

Post  mike on Fri Jul 18, 2014 3:36 pm

Any other drain off's?
You could remove the pump.
Make / convert something to fit the lower pump valve and drain that way.
I use a wet & dry hoover.
Then I undo the drain off.
Using a screw driver or wire wiggle that about.
Best if the unit is cold!
Or remove drain off inner.
Gently insert wire (have hose on DOC.
Then when running put it back.
Or try putting hose on doc. And using hoover on hose.
Dust sheets, towels and wet & dry vac are the order of the day.
Mike

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Re: Hi there!its jack

Post  life of bryan on Sat Jul 19, 2014 5:29 pm

Some times with cylinders I get a hose pipe and feed it down the connecting pipe between top up tank/main cylinder body to the bottom and syphon by either sucking till it flows, flow water through hose from a tap till all the air is removed and then it will syphon back or connect simple drill powered pump.

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Re: Hi there!its jack

Post  jack125 on Sun Jul 20, 2014 4:21 am

Huge thank you for all your replays.There are two more drain offs of the pipes.ive tried them and nothing is happening.it looks like i have to (as you said Mike)take pump off.it worries me that i might have a huge problem with limescale.pulsacoil 3 is 13years old and i might need to get a new Pulsa BP 220.what do you think?

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Re: Hi there!its jack

Post  mike on Mon Jul 21, 2014 5:58 am

The joys of plumbing
If only everything thing in the world worked like it was supposed to!
BP 225 is a big one, do you need it?
I don't think you will get a hose in like Bryan suggested but worth a try.
My option would be the pump route.
But time consuming and you need to convert down to a 1/2" / 3/4" hose etc.
Go for the bottom pump valve, then when drained remove that and carry on with hose down to doc level.
Remove heater or heaters and check inside.
Remove scale with big spoon etc on stick. Torch will be needed.
Mike

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Re: Hi there!its jack

Post  jack125 on Tue Jul 22, 2014 11:30 pm

I managed to unblock drain valve.it wasn't easy but I did it.immersion heater is next.i bought immersion heater from gledhill but the thermostat I got with it is the cheapest you can buy and it's only 16Amp.both my immersion heater thermostats are 20Amps.they said that 16Amp is ok.its also 20Amp on the electric switches.how can that be right?

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Re: Hi there!its jack

Post  mike on Wed Jul 23, 2014 4:22 pm

That's how it is.
3 Kw heater pulls about 12 to 13 amps.
Most timers for E7 etc are only 16 amp rated.
Sounds like the ones you have are not genuine Gledhill parts (the old ones)
Mike

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Re: Hi there!its jack

Post  jack125 on Sun Jul 27, 2014 1:40 pm

Thanks Mike.ive bought cotherm thermostat 16amp.that should work.now,immersion heater I was trying to remove last night is solid.pulsacoil3 is more than 13 years old and I think bottom immersion heater has never been removed before.im worried that if I put a lot of pressure I will damage tread or something.what do you think?should I get bigger spanner and really go for it?

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Re: Hi there!its jack

Post  life of bryan on Sun Jul 27, 2014 2:12 pm

I don't think I have ever removed a non unvented immersion that wasnt solidly seized in to begin with, I normally break the immersion seal with the cylinder at least half full of water to keep the cylinder planted and its normal shape, I use a decent Monument immersion spanner and tap the end of the handle round with a hammer.

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Re: Hi there!its jack

Post  mike on Mon Jul 28, 2014 12:50 pm

Well you can try with water in the unit.
1;
Tap with a hammer / cold chisel. Firm but gentle.
2'
Remove all plastic from heater and stat.
Heat the immersion again gently going round and round the heater.
Stop and try chisel
If need be re heat and try again.
They will move in time.
Once loose, drain and fit new one.
Clean any old gasket off first.
Mike

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Re: Hi there!its jack

Post  jack125 on Tue Aug 05, 2014 3:10 am

Cheers everyone.hope that will solve my problem

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Re: Hi there!its jack

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