Thread: One for the fridgies

Originally Posted by scarry

A lung full of phosgene was good at that,dont ask me how i know.

Maybe not as bad as SO2,but probably not far off.

I remember in the day before we used to reclaim,sitting on a plant room,quite a few times,and feeling very light headed,letting refrigerant out for whatever reason.One time the apprentice almost collapsed,wandered out the plant room and fell down the steps.I didnt see him go out,and didnt hear him as there was other units running.Found him out cold.
In those days,no complaints,even from him,we just kept going.

These days it would be 5 lots of paperwork,trip to the Docs,a few weeks off,and who knows what else,probably the arse for me.

It was nothing to let hundreds of KG's of refrigerant go,those K Mart stores had plants with over 300Kg's,just for the AC.If we had a pinhole on a condenser,just let it all go,fix it and fill her up with new stuff,just the way it was done.We would shut the plant,crack a valve,leave it overnight,come back in the morning.

Phosgene you said? Were you a WW1 veteran?

Ah yes, like the good olde Methyl Chloride & Aluminum thing? I reckon we all deserve a Victoria Cross/George Cross for putting our lives on the line like we did in the course of a days work in the days of yore.


But in fairness, we did know it was Explosive when mixed with air so we must have either valued our jobs or been ****ing stupid or took extraordinary precautions. Me? I wore a WW2 Army Gas mask.
Are ww2 gas masks safe?





Concerns have been raised about the sale of World War II gas masks on the internet, as they may contain asbestos, a substance that is harmful to health. Exposure to asbestos can cause diseases such as mesothelioma, lung cancer and asbestosis.26 Mar 2019


Seems they did protect against Chlorine & Phosgene. Who knew??







Like it was going to protect me when the roof caved in ffs? No idea what it was deigned for, probably mate's farts.


Some comps used to have thick Ally washers on crankshafts while running with Methyl.


Why? Because it was an easy one to make.

Originally Posted by loanrangie

A question out of left field for those in the know, i have a domestic chest freezer that i converted to a keezer that holds 5 x 19L beer kegs with 4 taps. I need to attach a drip tray so i would like to use small rivnuts to make it neat and these would be approx. 20cm down from the top edge of the freezer.
Being that there is about 75mm insulation between the layers, how close would the cooling element be to the outer skin ?

Why not drill a hole & find out ?. Depends on the type of insulation used but no guarantees as it would depend on the joker making it but in theory (mine) you should be ok but can you not contact the Makers? Pipes are normally fixed to the INNER skin but you will know if you have got it wrong so keep an ear out for a loud hissing sound followed by a lot of oily vapour in turn followed by a loud exclamation of **** it.

If you do drill it, slip a short length of tube over the drill so the drill doesn't take off while the tube acts as a Depth Gauge/stop & just leave the TIP of the drill showing & use a very low chuck Speed.

What Des said.^^^^

If you can get it to run on freeze,somtimes you can see the frost line,which will be the tubes,and as said,the tubes are attatched to the inner skin or pushed against it for maximum cold transfer.

Good luck with it but be super carefull,if you hit a tube it will probably be unrepairable.

Edit,my bad

You want to drill on outside of cabinet,feel for heat,it might give you some sort of guide as to where the tubes are.

Originally Posted by 4bee

Phosgene you said? Were you a WW1 veteran?

Ah yes, like the good olde Methyl Chloride & Aluminum thing? I reckon we all deserve a Victoria/George Cross for putting our lives on the line like we did in the course of a days work in the days of yore so some snotty kid could have an Ice Cream cone.


But in fairness, we did know it was Explosive when mixed with air, so we must have either valued our jobs or been ****ing stupid or took extraordinary precautions. Me? I wore a WW2 Army Gas mask.


Are ww2 gas masks safe?





Concerns have been raised about the sale of World War II gas masks on the internet, as they may contain asbestos, a substance that is harmful to health. Exposure to asbestos can cause diseases such as mesothelioma, lung cancer and asbestosis.26 Mar 2019


Seems they did protect against Chlorine & Phosgene. Who knew??







Like it was going to protect me when the roof caved in ffs? No idea what it was deigned for, probably mate's farts.


Some comps used to have thick Ally washers on crankshafts while running with Methyl.


Why? Because it was an easy one to make.

EDIT.

Thinking on a bit.
No matter what gas was in the air it could kill you due to lack of breathable oxygen & is why even when a CO2 Fire Extinguisher is used indoors, that too can kill you for the same reason.

Ah happy days.

Originally Posted by 4bee

EDIT.

Thinking on a bit.
No matter what gas was in the air it could kill you due to lack of breathable oxygen & is why even when a CO2 Fire Extinguisher is used indoors, that too can kill you for the same reason.

Ah happy days.

Thats why flatulence in a confined space is not a good idea,surely your Mum or Dad taught you that.

Thinking more,its not much fun working on trawlers,everything sinks to the bottom of the boat near the refrigeration gear.
Leak testing was always fun as the refrigerant was heavier than air,it just sat in the bilge.Light the lamp,and all it did was make phosgene.

We used to run a 1/4 line up over the side when de canting into the atmosphere,as we did in the day.

Today we would get into more trouble than a serial rapist for doing something like that.

Originally Posted by scarry

Thats why flatulence in a confined space is not a good idea,surely your Mum or Dad taught you that.

Thinking more,its not much fun working on trawlers,everything sinks to the bottom of the boat near the refrigeration gear.
Leak testing was always fun as the refrigerant was heavier than air,it just sat in the bilge.Light the lamp,and all it did was make phosgene.

We used to run a 1/4 line up over the side when de canting into the atmosphere,as we did in the day.

Today we would get into more trouble than a serial rapist for doing something like that.

Russian are you?

I had forgotten the supposed Phossie release from Halide torches. Jeezuz we were brave but uneducated souls/fools weren't we? Forget the ally, this was hot copper & it did pong & grabbed one in the throat & that should have been enough warning to ditch it. STill kickin on tho...........

Originally Posted by scarry

Love the R448,back to R22 discharge temperatures,supposedly good for low temp.
Oh well,compressor changes will be the norm,again.Even on shortish pipe runs like this job.

They dont understand how good r404 is,but we have to save the world


Large new low temp system,12 months old(installed by another contractor),oil change today,and replace oil sep.Discharge temps at 110 degrees.
Replace TX and oriface of correct size,head cooling fan,temp now at 78 degrees.Total system SST 15 degrees.Air on condenser 34 degrees,Head fans keeping at 260PSI.
Medium Back pressure unit so heaps of condenser.
Better,but with a bit of wear and tear,temps will be back up.

On R404a,the system would have been fine how it was,as it runs so much cooler,is more forgiving.

Oh, nice.

A certain large chain are using it in lieu of 404 as a retrofit on their racks.
And both aren't fitting ball valves on modules or evaps on any new installations so complete stubs have to be pumped down for routine service work, (and current ball valve caps are glued shut) and and and.
Sigh.

Ah well, I won't have to worry about it for much longer

Oh, and g'day fella's.

Originally Posted by rick130

Oh, nice.

A certain large chain are using it in lieu of 404 as a retrofit on their racks.
And both aren't fitting ball valves on modules or evaps on any new installations so complete stubs have to be pumped down for routine service work, (and current ball valve caps are glued shut) and and and.
Sigh.

Ah well, I won't have to worry about it for much longer

Oh, and g'day fella's.

But i bet the price is cheap.....

Anyway,great to hear from you again.


"Ah well, I won't have to worry about it for much longer"

Tell us more,only if you want.