Superb guys... that's filled in all the holes in me head! Tis much appreciated... hopefully I'll be back with a new thread full o' temps n suchlike for y'all to check out!
Got 2x Prommi MkIIs and a VapoSE in the queue to be done...
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Superb guys... that's filled in all the holes in me head! Tis much appreciated... hopefully I'll be back with a new thread full o' temps n suchlike for y'all to check out!
Got 2x Prommi MkIIs and a VapoSE in the queue to be done...
Okay.... but what we're probably really getting at, is don't make putting gas in the thing and starting it up more complicated than it is!
It is not complicated!
Understood... but if you read thru this whole thread and most of the others covering the topic, that doesn't get said anywhere... prefer to see it said than to assume when dealin with a £600 piece of hardware...
Just gonna ratch thru the threads for temp measuring points for SST etc etc and I'm done... with a bit of luck I'll be regassin' on saturday!
The procedure that worked best with Proms until now consisted of the following steps:
- Braze a schraeder valve on the thingie
- Pull a vacuum, and charge until pressure is about 2 bar. Or at least positive if you have no gauges.
- Start the damn thing , and load it up.
- Add refrigerant until you pass the lowest temperature, then remove until the lowest temp is reached.
- Disconnect the evap, and check for idle superheat (floodback). This is probably OK, but check for sure.
- Done.
it's easy as that.
A sidenote: removing refrigerant with the Prom running cannot be accomplished by pushing the schraeder core. Air will rush in then.....
VacPump to Recovery Tank is the plan...Quote:
removing refrigerant with the Prom running cannot be accomplished by pushing the schraeder core. Air will rush in then.....
That's how I do it too.
But I still would suggest that you undercharge first, then match charge to load. O
vercharge first, then match charge could possibly damage the compressor.
Oh, and give the prom+CPU 10-15 minutes to adjust themself to the new charge before adjusting again..
Absolutely.Quote:
But I still would suggest that you undercharge first, then match charge to load. O
vercharge first, then match charge could possibly damage the compressor.
Oh, and give the prom+CPU 10-15 minutes to adjust themself to the new charge before adjusting again..
And the undercharge strategy would be crucial when charging a chiller, because it can take a long time for the coolant to chill to lowest temp, and that is when an overcharge can destroy the compressor.
Righty... undercharge it is then!
well glad to see my thread can almost run its self...LOL:D
been busy guys...working and my too children that are now 14 and 11 and taking my time to a new leval...but i have done a 410 prom now and it works...
not much to say as i need to fine tune it....it worked so much easier than i thought it would....
have a new prom moded to a baker block (404a)and new mounting system....with a dead on simpson temp meter....within + or - .02f of my newest calibrated fluke 51..it runs a cool -62f on startup and a easy -52f under a load....
i will try tommorow night to post a pic of the 410c prom and the new baker block prom...
Glad to see you back in action. Hope everything is well at the home front.
baker18
Definitely glad it's quieting down for you...now you can get back to benching yourself. And my thanks to the B&B brothers for helping with the project.
Marci mate...make it 3 x Mach IIQuote:
Originally posted by Marci
Superb guys... that's filled in all the holes in me head! Tis much appreciated... hopefully I'll be back with a new thread full o' temps n suchlike for y'all to check out!
Got 2x Prommi MkIIs and a VapoSE in the queue to be done...
Phoned you guys months ago and u didnt know of any details then...i have been checking closely as well as the thread in the o-c.uk forum...
As soon as you sort these 2 mach 2s sucessfully count me in as well...
U gonna be using R507 or 404a then?
well i promised some pics of a baker block modded prommie and here they are...
this is a 404a mod..baker's newest block and enclosure..
this first pic is unloaded at startup..
edit:this readout is in F not C degrees
second pic is running loaded...
this pic show the new enclosure and swivel mounting head...
this pic shows the evap face and bottom of the enclosure...
Somebody will be very happy with his new toy...............
baker18
yes i believe someone will be very glad to own this!! whos this one going to bowman?
Bowman, where is that temperature probe located on the evap?
Okay heres my day
-Me buys prommy-
-Me tests prommy-
-Me wants prommy modded-
-Me is joking like hell-
Bowman/Baker what part on that enclosure turns? Is it just the square base or the whole thing??
It's really fascinating to watch this hardware evolve in Bowmans' very capable hands. The new swivel head is a simple but brilliant solution to an important problem.
It's already been proven that certain large companies monitor this thread and others in here for their R&D. I would not be at all surprised to see these innovations surface in upcoming releases of their product.
I know Bowman well and consider him a close personal friend. He doesn't do it for the money. He does it for the pure joy and satisfaction it brings him, as do most Master Craftsmen.
I know there must be a lot of cost involved but I wish Bowman and others in here could protect their ideas and improvements by copywrite or some other legal means to prevent their labor from being used to put money in someone elses less than deserving pockets. ;)
Easy enough done.... simply do all the technical drawings for the product, sign em, date em, mail the technical drawings to yourself by a registered method of delivery which requires a signature. Post em to yourself. When they arrive DON'T open them.
This now classes as dated proof of who and when the idea was conceived etc and can be used for basic copyright proof etc.
Now if you ever see the idea copied etc you can simply produce the sealed package to the courts etc... as long as yours is dated (ie: date of posting) before anyone elses, you win!
Really? I don't know anything about such things, but if this will hold up, I would suggest everyone do it! :D
Thanks Marci!
Lots of luck on that one. You can get around a copyright with just the slightest changes. I've been down the patent road, too. Same story, but cost me a lot more money.
Imitators win, innovators lose. That's just the way it is.