Mach I probs help pls!

[JAMES]

I used the guide that i found on XS to repair a leak on MACH I by chilly1 and i was successfull(Thanx alot chilly1)... now i have also regassed it with R134A and here is what i get now...

-28c to -29c @ idle...:(
before the leak i used to get like -44c idle...:D

I have attached a pic here to show some wierd frosting.... is it normal...i never had it before???

Now will this happen if I have filled in alot more gas then needed???

Thanx in advance for ur help guys...:)

[Zejtan]

you have owerfilled it by a kilo or so...
in other words, there is to mutsh R134a in the system.

shut the unit down, let it be off for 3 minutes, then let small portions of gas out. remember SMALL portions !

then run it again, if problem still is there, let some out again, SMALL portions,

You might be doing this small portions fore a loong time, but i promise, that is your problem.

// Zejt

[jinu117]

you have owerfilled it by a kilo or so...
in other words, there is to mutsh R134a in the system.

shut the unit down, let it be off for 3 minutes, then let small portions of gas out. remember SMALL portions !

then run it again, if problem still is there, let some out again, SMALL portions,

You might be doing this small portions fore a loong time, but i promise, that is your problem.

// Zejt

Wierd, I have same problem as he does. Recently modded and repiared by xtwerkz.com... Not too happy with current temp (fan blowing at full speed, 38-40c no load, 32-33c idle, 26-28c full load) I see myself considering it is R404'd too. I am guessing they over charged it as well... hmmmm...
Now, why does the frost on there happens when system is overcharged? Inquiring mind wants to learn. (Guessing I will drop by xtwerkz again today or tomorrow).

[Zejtan]

the frost comes there due to the fact that there is liquid entering the kompressor.

[JAMES]

So the liquid is entering due to that fact that there is toomuch R134A gas???

Ok now should i do the little portion thing like this....

Let some gas out and then on the uint and see if it cools correctly.... it the prob exists then i off it and then release more and then ... check the it again...

Y cant i let go on the gas when the uint is ON?

[Zejtan]

NO! you can NOT let gas out when it is on,
The system works under vacum ( probably not in your case now because of the ower filling ).
If you open the schrader under unit ON you will let air in, and your problem will become even larger.

Shut the unit down, let it be of for a couple of minuts, open the schrader for half a second, and restart the unit,
eventually, the temperature will begin to sink,.
BUT, the same moment as you release some amount of gas, your temperature will become higher again, when you reatsh that point, you should NOT atempt to release more gas,
Check your temperatures during MAX load for the best temps. NOT the idle temps.

// Zejt

[chilly1]

Ok the system may have air in it. Was a good vacume pulled? 500 microns? Triple evac? It may have an over charge. What is the suction pressure under a no load condition at room temp of 74 to 75? It may be overcharged. PM me when you post further questions. I will answer what I can.

[jinu117]

Good, I just got back today from xtremetekwerkz and they corrected the amount of R404 on it. Now it idles well past -50c and gets down to about -38-37c under full load (prime 95) Gonna open and see if there is frost forming under when I have time now :)

[JAMES]

I have done the way u asked me to Zajan... and the temp now has dropped from -28 to -34 ... I have not finished with though... but i wanted to know if the processor is working???

btw how will i know that i got air inside my system???

[chilly1]

If you have air in the refrigeation system you will notice that the compressro is making more noise than usual. Next that it is running too hot. If you check the subcooling it will be low and the superheat will also stay too high. Capacity will be reduced.