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  1. What kind of compressor damage that seems to have...

    What kind of compressor damage that seems to have no capacity issues would cause oil foaming? From what I understand this is a newer compressor about a year old- not sure why the old was replaced or...
  2. Don't think so as holds pump down no problem....

    Don't think so as holds pump down no problem. That's sort of the heart f my question though- if liquid did migrant to the oil/ crank wouldn't the heater boil it all out or does the oil stay...
  3. No what I was trying to say was half to a little...

    No what I was trying to say was half to a little less then 3/4 full
  4. How is migration possible with the crankcase...

    How is migration possible with the crankcase heater working? Also it is a split ac and the unit is in no way the coldest spot.
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    "But this one goes to 11" "Why not just have a...

    "But this one goes to 11"
    "Why not just have a 0 and go to 10?"
    ".... .... But this goes to 11"
    Cmon someone's seen Spinal Tap
  6. Right here pal!!! Ask away- on the site that is....

    Right here pal!!! Ask away- on the site that is. Only way to learn is by your mistakes or asking someone you trust... But be forwarned a lot of times like anything else If you ask ten guys you'll...
  7. Can liquid refrigerant boil out when heated

    Have a cope 4d 15 ton I think but that's neither here no there. Seldom intermittent oil trips. Oil consistantly runs foamy- all the time. There is plenty of oil pressure and superheat is plenty -...
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    Yes it's been awhile since I've done one from...

    Yes it's been awhile since I've done one from scratch and read the literature. However Confucius say if I'm flooded at the header- I'm surely flooded at slightly downstream of bulb especially when...
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    I'm getting a little of track here but just for...

    I'm getting a little of track here but just for my own educational purposes and I'm sure it's in some lit but can somebody refresh my memory as to where sporlan recommends equalizer be landed? Near...
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    Pegged out all the way open? They can't be...

    Pegged out all the way open? They can't be throttles back?
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    Forgot to mention that. No. No receiver.

    Forgot to mention that. No. No receiver.
  12. Replies
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    I know i can't measure an appreciable amount of...

    I know i can't measure an appreciable amount of liquid subcooling and not have a solid column site glass that fills up then gases fills up then gases. I realize in undercharge system will fill up and...
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    Burn that bridge when I get there but my order of...

    Burn that bridge when I get there but my order of troubleshooting is to address what I know is not right first- then move on
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    Just curious why do I want to down size the...

    Just curious why do I want to down size the valves? There matched to the system? Two 20 ton valves feed a 40 ton coil?
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    Well that's how this all started- I suspected...

    Well that's how this all started- I suspected undercharge as there was no sub-cooling and excessive superheat- so I judisciously charge to an appreciable 8-10 roughly sub cool - which seems to come...
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    Oh I hear all that - Airflow is fine. Most vavs...

    Oh I hear all that - Airflow is fine. Most vavs calling for cooling - I create these conditions when digging into this sort of stuff. It's a Mcquack evap so if your familiar with there mid ninties...
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    35 hp 6d that runs at full load 100% per circuit...

    35 hp 6d that runs at full load 100% per circuit of the time and that is a whole other topic of discussion that I'll avoid for now. 40 ton system two 20 ton txvs. Ok I hear ya on the equalizer line...
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    I made sure there was adequate load and vfds at...

    I made sure there was adequate load and vfds at 100%. I'm not just mindlessly tearing into txvs in fact I tell the "younger" or should I say less experienced that I work with that the txv is the...
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    Thanks guys. That's the heart of my question. Can...

    Thanks guys. That's the heart of my question. Can the "cartridge" be replacer guts spring etc- it concerns me how the stem just spins with no stop all the way in or out. To answer some other...
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    DING DING DING DING - or is it sirens going off...

    DING DING DING DING - or is it sirens going off because I'm busted!!! This is the exact same facility in which I recently posted -again some long winds about purging non-condensables- although I...
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    Topped off. Virgin r22. Highly doubtful is mixed.

    Topped off. Virgin r22. Highly doubtful is mixed.
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    OVE-20 TXV conundrum

    This is an AC application but I feel ill get the beat answer here- as I normally do. Two 20 ton externally equalized OVE-20s feed a single 40 ton evap. Had an undercharge condition. My pecking order...
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    I can never remember who made what gas law or...

    I can never remember who made what gas law or what they say exactly but the long and short of it is they "shirnk" the condenser. One thing that hasn't been hit is the non-condensables "contaminating"...
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    No I hear ya in fact I always affix a hose with...

    No I hear ya in fact I always affix a hose with cold water to spray down and keep recovery cylinder cool. Especially since a lot of the times I'm dealing with 100 lb recov cylinders. Also on a good...
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    Yea I was thinking of isolating and recovering...

    Yea I was thinking of isolating and recovering just the condenser. I only mentioned not being feasible because of the amount 200+ total and they're very whiny and the down time would insue panic- so...
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    While running? Does it not travel with the...

    While running? Does it not travel with the liquid- liquid seal or not- this is the heart of the debate- does it magically stay on the condenser via liquid seal in a dynamic system- or does it travel...
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    Ah ha- very good question- northern mn. Easily...

    Ah ha- very good question- northern mn. Easily see stretches for weeks below zero- ok in addition to head master we install a CCH to heat the receiver. Head master for sure as indicated originally...
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    Installing indoor unit outdoors

    Someone told said customer that there isn't enough air above walk ins despite egg crates all over and plenty of condenser cooling blah blah not enough make up air blah blah- so they are dead set on...
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    True true

    True true
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    Yes put more often then not the condenser is not...

    Yes put more often then not the condenser is not the highest point and in many remotes with no receiver there isn't enough pump down capacity to pump down entire charge into cool. I suppose one could...
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    True- but therorically wouldn't letting the temp...

    True- but therorically wouldn't letting the temp rise back to ambient and fall repeating do it. I agree with the temp drop by purging vapor- I'm just educating myself here. So pumping down- cooling...
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    Doesn't the liquid and air seperate in the...

    Doesn't the liquid and air seperate in the cylinder and blowing the top (vapor port) of cylinder off until PT falls into place a good place to start
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    I actually mentioned this in my op but I do not...

    I actually mentioned this in my op but I do not believe - and I'm open to valid discussion to the contrary- that you can contaminate the refrigerant itself with non- condensables. POE oil sure but...
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    Sorry but I can top that :) my also apologies to...

    Sorry but I can top that :) my also apologies to OP for getting so off track. One time I was getting something from my van and some dude comes up to me and asks if he knows " where he can buy freon"...
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    Any under counter reach in in a bar because...

    Any under counter reach in in a bar because there's always 100% of the time some wasted idiot telling you how "it probably just needs freon" or how it's probably the compressor
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    "Purging" non-condensables

    I recently read some old posts and wanted to open the floor for some more debate as there are valid arguments on both sides. Non- condensables suspected in system- can it really be pumped down-...
  37. That's what I'm talking about!! Thank you sum....

    That's what I'm talking about!! Thank you sum. It's hard to find good exploded diagrams like that although I've found an out fit called renwhit who I believe is out of Aussie has exploded views of...
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    Because there's a $650 core😄. No seriously I did...

    Because there's a $650 core😄. No seriously I did think about it but at 450 lbs it's not something I want to lug around and even if it past my bench test - which I wouldn't no how to really do I don't...
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    Really?? That's what the 800 at the end of all...

    Really?? That's what the 800 at the end of all "new" copes means?? Interesting. Yes it's an 4DE1-2000-TSK. Know that model by heart. My main concern was getting the end pressed back on. Really wanted...
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    Thanks for the response... All that said I think...

    Thanks for the response... All that said I think I'm gonna stop entertaining the thought of rebuilding and quote replacement. I could spend other people's money all day long but I see now a field...
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    Rebuilding 4D- rods, pistons, valve etc

    I'm stepping outside my comfort zone here. Trying to disregard fear of failure I'm seriously considering replacing busted rods and Pistons on a 80s vintage red tag 4D. Has anyone ever tried this?...
  42. Well so much for that... Valve plates no issues-...

    Well so much for that... Valve plates no issues- rear cylinders on both banks ( side closest to suction) rods/ Pistons scrambled lying in bottom of sump. I'm seriously considering rebuilding-...
  43. That's a good point. Suppose plates where as...

    That's a good point. Suppose plates where as smooth as glass and it where a feasible option as a mechanic I'm always trying new things- not necessarily taking the path of least resistance every time...
  44. I haven't determined anything yet I haven't even...

    I haven't determined anything yet I haven't even pulled the heads. I just like to do my own leg work especially with specific parts as they're never regular stock items. I just seen some vendors-...
  45. I tried unplugging the trunk from NAE and...

    I tried unplugging the trunk from NAE and uploading over bus... Still no luck... Ever
  46. Obsolete 4D OEM part numbers has to be a reference somewhere

    I have a red tag 4DE1-2000-TSK. Fair enough. The copeland Emerson some with the site hasn't been very helpful. The app pulls up an 4DE1A-2000 not sure what the A is for but bottom line is in trying...
  47. My CVT is older and just has the serial port as...

    My CVT is older and just has the serial port as does my laptop. I've given up on the serial to USB adapters- junk all junk. Gone through a few of them- eventually broke down and got a male X female...
  48. Really??!! So you need to unplug the NAE trunk...

    Really??!! So you need to unplug the NAE trunk bus first?? Never would've they've that
  49. What do you mean by pass through is it the...

    What do you mean by pass through is it the procedure o described with the adapter and plugging into a device ?
  50. In most cases it's usually just an NAE with...

    In most cases it's usually just an NAE with single trunks. None of the stuff your describing
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