Oso unvented. Cold water through tundish

[Welder]

Series 20 & I think 16 are bubbles Dave.

Thanks Chris. Gosh never knew that.

 

[armyash]

I have the customers copy of the manual

Come on Ash there must be something to accommodate expansion, either it is a bubble top or it has a vessel/s ?
If it hasn't got a vessel did you recharge the bubble, it could be that the expansion relief was discharging because the expansion was not being accommodated.
In which case it just needed a service.

Has the air gap with the instructions on the side like with the megaflo. Followed that and no change.

 

[Welder]

If I isolated the inlet but it's the t and p that is faulty would this not continue to run after I have isolated?

Depends. As you remove the pressurisation from the incoming side then, if it's borderline on the pressure side, it may sit back down and seal. You could only tell that if you had pressure gauges all over the show.

Did you reset the bubble? How long did that take?

 

[chris watkins]

Thanks Chris. Gosh never knew that.

Thats because you never asked BBA.

Sorry Dave just could not resist that one.

 

[Welder]

Thats because you never asked BBA.

Sorry Dave just could not resist that one.

View attachment 36261

Swine!
Note to self: Watkins dies on Thursday...

 

[armyash]

Depends. As you remove the pressurisation from the incoming side then, if it's borderline on the pressure side, it may sit back down and seal. You could only tell that if you had pressure gauges all over the show.

Did you reset the bubble? How long did that take?

Not long as the customer had done it themselves twice before I got there trying to sort the issue themselves. They said it's been runni g constantly for about 2weeks.

 

[Welder]

Not long as the customer had done it themselves twice before I got there trying to sort the issue themselves. They said it's been runni g constantly for about 2weeks.

TBH, I think you're right. Change the sodding lot and be done with it. You are not going to get paid for being clever & diagnosing in this instance. #Pragmatism.

 

[chris watkins]

I have the customers copy of the manual Has the air gap with the instructions on the side like with the megaflo. Followed that and no change.

& it wasn't coming from the T&P ? Then it was the relief that needed replacing. If the composite (combination) valve set is old, >12 years, I might suggest to customer it is replaced but not the T&P. I am generally against carpet bombing parts on jobs I think it is unprofessional but then occasionally I will get court out.
BTW you shouldn't remove customer copy of MI's. Get yourself an iPAD & download them as required would be my tip.

 

[armyash]

TBH, I think you're right. Change the sodding lot and be done with it. You are not going to get paid for being clever & diagnosing in this instance. #Pragmatism.

I think that's the best thing in this case. I know it's not ideal. Im not making a lot on the job 2hrs labour plus the cost of the parts, will recommission and cover all bases.

There is a doc fitted half way up called a commissioning valve or something I'm going to change that also. Calling her first thing with a price in the morning and will be honest, will say its not worth risking another component going in a few months which is possible if all the same age, will check the whole thing over and issue a service record. Or I'll say I'll change the combi valve only but if water starts discharging again after a month or so from something else its chargeable again.

 

[armyash]

& it wasn't coming from the T&P ? Then it was the relief that needed replacing. If the composite (combination) valve set is old, >12 years, I might suggest to customer it is replaced but not the T&P. I am generally against carpet bombing parts on jobs I think it is unprofessional but then occasionally I will get court out.
BTW you shouldn't remove customer copy of MI's. Get yourself an iPAD & download them as required would be my tip.

Yes I'm sure it's the combi valve. I'm going to give her the option of just changing that or all of it. Last thing I want to do is come across unprofessional but I get what you mean. It looks a case of I'm not sure so I'll change it all. I had to take the instructions as I had poor signal and didn't know if they were available online. Customer was OK with it. I showed her the lever valve to isolate if needed.

 

[markfxy]

I had one recently the prv was running intermitently turns out it was the basin mixer tap the mains pressure was lifting the ceramic disc and pressurising the cylinder I put an nrv on the hot feed to the tap and problem solved.
Took me a while to sus it out though

 

[armyash]

Job done. It was the combi valve. Gave the customer the option to change the t and p also or not she said change it anyway.

Back Wednesday evening to service the boiler too.
Icos