The motor is 230VAC/3PH.
Being in the US means 110VAC/1PH for this kind of application.
So I need a new motor. Honestly the motor on there doesn't list spec's, and it is massive. Huge compared to any motor I've ever seen any of you use on expect that 5 stager.
normally there are 115VAC motors available with same casing dimensions like your 230VAC three phase motor
i can recommend drzarkloff´s youtube channel he explains nearly everything about HVAC and he is in the US so the informations given by hin could be helpful
Thank you very much, I'll take a look at those when I get the chance.
Figured I'd show off a new set of goodies that also just showed up since I did on XS.
As some of you know, obtaining large condensers with fans is not easy in the USA. So when I had the opportunity to buy large condensing units at decently low prices (1.5-3 ton's for $700), I jumped on it. Bought a few, and began breaking them down and reselling off the compressors, high and low cut offs, and other pieces to local HVAC persona's.
So two more now to sit on the shelf
Oh the projects I have in mind!
Geändert von NoL (08.12.2009 um 22:57 Uhr)
Started on the steel frame. Simple spot welds, then a nice line on the insides. Have to get a piece of MDF tomorrow, slot the corners, weld up the sides and the "carriage" for the heat exchangers". Then she might get some paint
What color will the frame get?
what parts are missing yet?
nice job.
what is the size of this frame? and which profiles are you using? 4cm x 4cm?
1" steel square beam (2.54cm square).
Not sure if it's going to get any paint actually. But here is the base finished. 1.25 inch squares were cut in the corners, so that the vertical framing can be welded in later.
Heavy duty here, those wheels are rated at 80kg a piece, and I hope they won't have a problem
Only parts missing now are the evaporator and flexible line, flexible line is ordered, and I'm waiting on a quote for the evaporator I want made for this. That and the 115V/60HZ motor which is on it's way.
(Oh and had the flexline, but decided I wanted 6 feet instead of 4 feet)
Obviously I haven't touched this in a while. Had shoulder surgery and medical school keeps you low on time. So back to work on it.
Today I finished the base, swapped first and second stage to new QK191CAB compressors (1hp), and made mounting brackets for every part.
Also got some brazing done.
She's almost totally piped up. Just waiting on the condenser fan. Big 1/3hp 3 speed that will probably get turned way the hell down but was the only thing I could find that fit the bolt pattern of the old fan.
Holy flying pink nimbus cloud of heat exchanger goodness! Points to anyone who can say that five times fast.
So, my welding has been getting rather good. I quickly slashed up and put together a frame around the HX box base. Angle on the long side, square on the short side. Sit's in there rather nicely. So then, how to add it to the beast? Clearly it's going on top. But how? Well, some plate steel, some more square, and some horrible guess and check and guess and check and guess and check. Ta da, it works. One supports really good, the first one is a bit leaning but again, easily supporting 10 pounds of copper and foam and valves. Plenty of clearance too for future pipe work inside the platform. This might really end up being amazing. It also puts the CPEV's right in easy access range to the front. Well. Sorta.
On to the pictures.
i like it, but are those 1Hp rotary compressors (i think between 22-25ccm displacement) strong enough to hold the load of three stages? condensor seems to be huge enough for some more powerfull compressors, but there are some problems with the 110v utility grid in your home with bigger motors i think.
The place for the hx box looks good, i had much trouble in my 4 stager because i placed my plate hx box between upper and lower platform, so no way to replace an hx without dismantle the whole unit
In my last system, the first stage was 1.125, second and third were 3/4 without any issue. Again the only conceptual heat to transfer is the heat from the compressor, the load of chilling the gas stream to the goal temperature, and the heat load from evaporator plus the insulation.
Therefore, with two 1hp and a 3/4hp, I shouldn't see any real issues. I'm removing almost all of the heat before it gets to the heat exchanger, and I plan on using R23 in the mid stage to help reduce load on the first stage.
About time!
Okay so this had a 1/3hp 230vac motor on here. Sadly this meant that, to get a 110vac motor and keep the same fan grill and fan blades, I had to find specific mounting holes. A big thank you goes out to Copeland for there wonderful sourcing department, who actually found me the matching 110vac motor to their 230vac motor in bolt size and everything... and then showed me where to buy it at the cheapest price FROM A COMPETITOR. I must say; that is not necessarily "customer service" but it is certainly "customer assistance" at it's maximum.
A pondering of new bolts later, finding this wasn't mounted on 8-32's but 10'-24's, a redrilling of a few holes in the mounting bracket, and kabam the condenser was ready. So what happens when you finally turn on a 1/3hp motor attached to a very large 16" fan that still hasn't actually been bolted down? Oh nothing; except the entire cascade started rolling in the opposite direction.
Did I mention it's a tight fit?
Compressor 1 and 2 aren't going to have "cooling" issues.
Everything but the connections to the box are done; box is now being slightly remade to have a bit more support and insulation for the inner chamber HX.
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