View Full Version : How do you chare your oil?
Stewie007
10-23-2005, 01:24 PM
Does everyone here just pour it into a measuring cup? Or do you have a way of charging it without exposing the oil to the atmosphere.
Please DO tell me if you do it in the latter way.. I have a measuring cup... :p
I only wish I would have left the oil that was inside the compressor alone..... But hey, its probably better to change the oil. Right now I can't do it though, because I can't draw a vac.
craig588
10-23-2005, 01:32 PM
A measuring cup and then a vacuum to boil the water off.
I don't know of any other way, but there just must be a machine out there somewhere that automates the process.
Stewie007
10-23-2005, 01:43 PM
Okay, well I guess I'm going with the measuring cup and sucking it in whilst drawing the vac... only way I can do it really.
Gray Mole
10-23-2005, 04:38 PM
For those lucky enough to own a charging gun, or a sealed vac bottle, charging with minimal exposure is easy.
I don't have either, but I've never had a problem replacing the oil and then vaccing any moisture out.
Gray
chilly1
10-23-2005, 04:59 PM
There is a tool costs about 100 and looks like a tire pump... Go to page 16/...
http://www.allied-refrig.com/G.pdf
\/icious
10-23-2005, 05:18 PM
There is a tool costs about 100 and looks like a tire pump... Go to page 16/...
http://www.allied-refrig.com/G.pdf
heh looks like it would double as a tire pump
Stewie007
10-23-2005, 05:20 PM
Can't afford that. I've spent too much money on this already. :p
Drawing it in using a vac will work just fine. I was just hoping that maybe I could do it cost effectively without such exposure. But I guess it won't really matter.
Using the vac to draw it in will work.
jinu117
10-23-2005, 05:22 PM
I use the pump above mentioned. Snatched one at johnstone for about $90 made from yellow jacket. It injects certain amount each stroke (usually 4-5 strokes for most compressors I have in hand). I usually change oil after building system than vacuuming the thing from highside, while shoving oil in to low side (less drip of oil, etc when I detach pump). You really don't have to take off schraeder valve this way from low side. And once done putting oil in, just let it vacuum all the way for first evac :)
PS) There seems to be cheaper one in e-bay that can do more than what I got from looking at description. Check that out.
chilly1
10-23-2005, 05:24 PM
YA their online price is way off...
runmc
10-23-2005, 05:26 PM
Even with the pump it will be exposed to the atmosphere. :)
Stewie007
10-23-2005, 05:36 PM
Yeah. So I don't need it. I was just wondering if there were maybe something people use that screws onto the can and pokes a hole in it or something... Use your imagination hehe.
But sucking it in with a vac works well. The vac pump will be on the other side of the system, cut off using the rotalock, and sucked right into the low side. It'll work fine that way. It'll just be open to the atmosphere for a little bit, that's what I was hoping that maybe I could avoid... but I guess ya cant always be perfect, eh? :)
chilly1
10-23-2005, 05:46 PM
You want to minimize exposure to humid air..'
Fill teh compressor and cap it after topping with dry inert gas.
Stewie007
10-23-2005, 05:50 PM
No use, I'm going to do it durring evacuation. As soon as the oil is in, I cap the valve and close the rotalock and draw a vacuum.
The air in Charlotte is VERY humid though. Hope it doesn't take too long to suck it in. :)
wdrzal
10-23-2005, 08:02 PM
2 pumps I have here at the house
jinu117
10-23-2005, 08:08 PM
hehe... I have pic29 one... how does pic28 one work?
wdrzal
10-23-2005, 08:52 PM
hehe... I have pic29 one... how does pic28 one work?
you just unscrew the cap, fill it up and pump, it basicly a hydraulic pump. It sold by the floro-lite company for injecting dye and oil. Its the excact same pump enerpac sells, its 10,000 psi . Whats nice about that one is you can tighten the cap and the oil stays sealed. It is slower than the yellow jacket one. You need 8 strokes per ounce. but it will pump against a much higher preasure. I use it to unblock cap tubes.
the first yellow jacket one pumps 2.6 ounces per stroke ,it pumps against 200 psi.
a oil injector also works well ,but I don't have one here to show. you fill them then use the pressure from a tank of refrigerant to force the oil in.
one could be easily made out of some copper tube and schrader valves.
wdrzal
10-23-2005, 10:52 PM
heres a pic of a injector type, you unscrew the end fill it and use refrigerant to push the oil in. I have 2 at the shop a 4 and 8 oz.
Stewie007
10-28-2005, 12:34 PM
Well I was successful in charging my system with oil.
I hooked up the vacuum to the suction line drier, then closed off the suction side to the service valve. Poured out my oil, dipped a thoroughly cleaned tube into it and sucked it into the system. All 26 oz went in within 30 seconds. :)
So that concludes this mystery. Worked out quite well actually, now I'm drawing a vac on the system.