Coolfreeze info

[Icy]

Has anyone actualy ever recieved any items from coolfreeze. Apart from them over charging. It would be really good to know if anyone actualy got any items that they payed for. If not im going to have to go through the small clams court to get my cash back :mad:

[Icy]

They themselfs have allready broken there 2nd terms and conditions rule by not telling me about changing the price. So i have a case from the start. All depends if i ever get the items grrr

[johann]

They themselfs have allready broken there 2nd terms and conditions rule by not telling me about changing the price. So i have a case from the start. All depends if i ever get the items grrr

I bought a compressor from them, it arrived OK but no electrics and they dont sell the electrics so Im stuck with a brand new compressor that I cant use.

I have no idea of how electronics work, what cap, relay etc etc to buy so its useless to me, waste of £70. Id rather have paid the £150 and got a NL11F.

This is almost always the case with buying cheap stuff. It looks cheap at first but ends up costing more in the long run.

I wont reccomend buying something from them

[wdrzal]

search coolfreeze in the archives I recall a few people complaining about that company. iirc changing price other than advertised was the main complaint.

[Gray Mole]

Good to know guys...

I've been considering them for replacement compressors and such, but if there's problems with 'em then it might be an idea to give 'em a miss.

I'ts all electrolux compressors or at least mostly from what I saw in there, and from my experience 'Lux is a pretty good compressor.

I'll have a look and see if I've got a spare relay and cap you can use Johann. I've gotten a few spare compressors over time, and the relays and caps I've had for the 110v compressors have always worked on the 240v ones with no problems too. At least it would get you started, but the electrics are pretty expensive.

I'ts not that much of a bargain if you've got to add in that cost, but if they're assuming 'Trade', then they're also assuming you've got the electrics from the old compressor to swap over :(

honestly though, any start relay and start cap (around 175mF+) should work for you I'd have thought. Other option if you can get one is those Supco 'hard start' kits have the start relay built in I think, and you just wire 'em on, and that's pretty easy after you've done a few.

Dean and wood supply relays and caps but thye sure aren't cheap for 'em.

Gray

[Icy]

heh the funny thing is they also sell the relays in the coolfreeze shop as well so im pretty sure they dont come with them. If you have another spare relay Gray i might have to flip you a few quid for one too lol

[Icy]

humm i think that coofreeze should be taken off this thread for selling items http://www.xtremesystems.org/forums/showthread.php?t=24771
as it seems that alot of people are getting ripped off

[Icy]

ok just phoned Coolfreeze up, They said they were waiting for my dryers to come in and the compressor came complete. So maby they might actualy deliver lol. atleast now if it does not come complete i can hold it against them and get a relay from them. Grr so much hastle i never want to use these people again lol

[Gray Mole]

I think we'd better wait and see if you actually get your compressor befroe you go looking for a relay :D j/k mate, but if you're stuck for one, just throw me a PM and I'll try to to help if I can :toast:

£75 for a compressor with those kinda specs is a pretty good deal anyways if you can find a wiring kit for it though. Those relays they've got there aren't bad for price either though knowing for sure which one's right is kind of a challenge. It's just a shame they don't supply 'em with compressor cos then you'd know you've got the correct one for the application.

The danfoss relay in there is what I have on my FR and TL compressors and they start up without start caps. I don't know if there's a small capacitor on them or what, but I tried to rewire with a start cap and the compressors didn't like it, I just had to use the relay alone. Don't know if that's the compressors or what but they worked nice. I'd be tempted to try them out on other compressors as it would make wiring easier and cleaner. I'll have to test that and see.

I really like the look of the 1/4HP+ 134a compressor. 10cc displacement and LBP, would work really well.

Gray

[Icy]

Nice yeah just got to wait a bit longer now =( if im lucky all my items might arive before New Year. Thanks for the support Gray. Yeah i was looking at the 1/4hp+ but i decided to go for this http://www.coolfreeze.com/mail-order/itm00059.htm and just change the oil to go with 134a. The only problem is that i cant find a tech sheet for it anywhere (Now before everyong shouts GOOGLE! i have allready looked but maby im doing something wrong) Lucky i live next door to 2 Retired Royal Navy electricians so if there is a problem with the relay i could allways ask for a little help. :D

[Gray Mole]

Hey if you decided to get some propane, you can just add some to the refrigerant and that'll carry the oil for you with no problem.

I use Calor Gas Propane (R290) and it's given me no trouble at all. It's actually a more powerful refrigerant than 134a to be honest. I've found it to be clean enough, and I just run it through a big filter drier on the way out of the bottle.

That's a high back pressure compressor, so I don't know how well it will work for you or not, but with the displacement it's got it should be just fine. 14cc is decent, and equal to my MP14 1/2HP electrolux that I used on the cascade. Worked just fine. It just may be a little less efficient for our applications, but you've got power to spare in it so it's worth a go.

In future though, I think for a single stage that 1/4+ would be more than enough for single stage. More power is nice though :) to a point.

Gray

[Icy]

yeah one of the reasons i went for that one is so that i can use it in the future for any other project i need too. So whats is the effect that High back pressure compared to low have on the system? :D (Talk about off topic heh) also what oil do you use as im going to have to change it and does the oil also work for 143a just incase i decide to switch?

[Gray Mole]

HBP is normally associated with high temp solutions. Not always but for the most part. I'ts just referring to the Low pressure being higher from what I gather.

IE in our systems, 0-5psi under load is about where we like to see things on average.

In a high back pressure system like an airco you'll see more like 2-3 bar of low side pressure, and that's where the medium and high back pressure compressors are designed to do their best work.

It doesn't mean they won't work for us, as I've used high and medium back pressure compressors with decent results, but if you're buying a new compressor it's nice to get one that's 'built for the purpose' if you know what I mean.

The biggest difference with the R12 or R22 compressors and the 134a or 404a compressors is just the oil in them. I'ts either mineral or AB in the R22, and POE in the 134a as that's what the refrigerant will carry. Otherwise oil is oil, it's just there to lube the compressor.

I find the easiest solution is to put a little R290 in the system, and it'll carry any oil you want. Can be mixed with any refrigerant that I know of, and then you don't have to worry about changing the oil, but ifyou'd rather change it that's cool, you just have to make sure it's really well flushed or you might end up with cheese in there, as mixing oils can give you grief.

Hope that helps a bit.

Gray

[Icy]

yeah i work on cars a bit and often see when people have made a mess by looking in the oil cap and then you see nice white mayo(got to love water and oil heh) so if i wanted to do a propane only system i can use any oil i want. but if i wanted to do a mix of propane and r134a i guess POE would be the oil to use. OK and one last thing whats the best way to do an oil change and not leave any old oil in there? i have read the guide but it just says to pore it out and i know from car stuff that it does not get rid of it all.

Btw thanks for all your help. Its really helping me out ALOT

[Gray Mole]

I find the best way is to pour out the old oil, add a little of the new oil, mix and pour it out. then a little more, and mix and poinr it out again. if you've got nitrogen, 'Blast' it out by attaching to the suciton port and blow it out the service port.

After a few times it should get 99% out, but it's not an easy process. It's why i've started using a little 290 in everything as it's less hassle.

Automotive aircon is where I started out. Been a tech for far too many years on cars, but it gives a good basis for understanding how it works, and it's just adjusting to this application.


Gray