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  1. Thread: Static Pressure

    by mjm88
    Replies
    17
    Views
    1,210

    Haha funny you should mention that. On this same...

    Haha funny you should mention that. On this same system I found two return air fans that haven't ran in years. Put new belts on and started them up....holy cow. It was foggy in the back hall of the...
  2. Thread: Static Pressure

    by mjm88
    Replies
    17
    Views
    1,210

    Static Pressure

    Can anyone give me some good info on how to interpret static pressure readings. Just for a little background I am a service tech for a grocery store chain and do 90% refrigeration. We get to HVAC...
  3. The biggest thing I was looking to use it for was...

    The biggest thing I was looking to use it for was checking the heat exchanger. Since some of the older units we have are near impossible to get a good visual inspection of the heat exchanger.
  4. Yea expensive is not what I'm looking for. Just...

    Yea expensive is not what I'm looking for. Just something to help me get started with.

    Now I have a dumb question. With RTU's do you just stick the probe straight in the exhaust and still get an...
  5. Combustion analysis in the supermarket world

    I know combustion analysis has been a big topic on here, but I service strictly supermarkets my main job is refrigeration. We also take care of the hvac which is normally pushed to the side...
  6. Thread: "Drying" a drier

    by mjm88
    Replies
    21
    Views
    1,515

    I was at a Sporlan class and someone asked a...

    I was at a Sporlan class and someone asked a similar question. He said to remove moisture a drier would have to be baked at a high temperature for hours.
  7. Thread: OIL MUD

    by mjm88
    Replies
    5
    Views
    582

    It was converted from mineral oil and 502 to AB...

    It was converted from mineral oil and 502 to AB oil and 408a. This was years ago it was converted. It must have had oil issues in the past as someone put an oil separator in it. I just think if the...
  8. Thread: OIL MUD

    by mjm88
    Replies
    5
    Views
    582

    It's AB oil, I've seen dirty screens before I've...

    It's AB oil, I've seen dirty screens before I've just never seen it so bad it had to be scraped off. I'm curious what all the sludge came from?
  9. Thread: OIL MUD

    by mjm88
    Replies
    5
    Views
    582

    OIL MUD

    Have you ever had a copeland oil pick up screen so dirty it looked like mud? I had to scrap it off with a screwdriver it was so bad. The screen actually split. I'm guessing that's how it kept...
  10. Replies
    11
    Views
    1,108

    Accumulators are a great way to protect your...

    Accumulators are a great way to protect your compressor against liquid. Whatever reason it may be low loads, evap fan motors go out, txv gets stuck wide open. It's a good investment for the...
  11. Thread: digital gauges

    by mjm88
    Replies
    35
    Views
    3,047

    One of the first times I used my ak's I had the...

    One of the first times I used my ak's I had the wind catch a panel On a hussmann remote system and slam shut on the screen of the gauge. The only thing it did was put a small cut in the rubber boot...
  12. Replies
    1
    Views
    574

    Case temperature monitoring

    I have a customer that has asked for a way to remotely monitor case temps. These are just a few split systems and some self contained equipment. Looking for some ideas for the most affordable...
  13. Replies
    30
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    4,301

    Haha we'll have to start pulling trailers

    Haha we'll have to start pulling trailers
  14. Replies
    30
    Views
    4,301

    I've heard the same thing about it being phased...

    I've heard the same thing about it being phased out due to high GWP ratings a few months ago by a local supplier
  15. Replies
    25
    Views
    3,420

    Well I have a system I'm trying to program on a...

    Well I have a system I'm trying to program on a press2temp sensor for and it's not available on the version of reflecs. I didn't know if I could update it to get that feature
  16. Replies
    25
    Views
    3,420

    . Is there a way to update the software on...

    .

    Is there a way to update the software on the reflecs controller with ultrasite?
  17. Replies
    15
    Views
    2,464

    I was just working on a Hussmann deli service...

    I was just working on a Hussmann deli service case today and they told me just the opposite. Set the Thermostat's to 28* discharge air, and set the EPR a few degrees below the evap setpoint so if a...
  18. Replies
    6
    Views
    1,692

    I've always had good luck with the strap wrench...

    I've always had good luck with the strap wrench on stuborn filters
  19. Thread: Hose Length

    by mjm88
    Replies
    17
    Views
    1,964

    This is why we never hook up to critically...

    This is why we never hook up to critically charged systems unless your positive you have a refer issue. Also probably why alot of critical system don't have access ports...
  20. Replies
    10
    Views
    1,092

    Yea it's a good way to ensure you don't plug up...

    Yea it's a good way to ensure you don't plug up the new one. Normally do a nitro purge as well to try and get any oil out of the evap and accumulator as well
  21. Replies
    10
    Views
    1,092

    We change the oil in the compressor with a...

    We change the oil in the compressor with a plugged cap tube and poe
  22. Thread: out of my realm

    by mjm88
    Replies
    43
    Views
    4,184

    I've :censored: up and last 400# of hp 80 before....

    I've :censored: up and last 400# of hp 80 before. **** happens as long as you learn from it. I was tol a long time ago it only a mistake the FIRST time
  23. Thread: out of my realm

    by mjm88
    Replies
    43
    Views
    4,184

    Same here. Just bleed the vapor out of the hoses

    Same here. Just bleed the vapor out of the hoses
  24. Replies
    10
    Views
    2,022

    you can get some milkstone remover at a farm...

    you can get some milkstone remover at a farm supply store. i wouldn't use it more than once though. then you will no doubt jack up the evap.
  25. Thread: out of my realm

    by mjm88
    Replies
    43
    Views
    4,184

    :ditto: Also like previously mentioned, learn...

    :ditto:

    Also like previously mentioned, learn the defrost cycle and your in there!
  26. Thread: Hand tools

    by mjm88
    Replies
    33
    Views
    3,261

    craftsman, gearwrench, and klien. Also a fan of...

    craftsman, gearwrench, and klien. Also a fan of the veto pro pac :cheers:
  27. Thread: A True Question

    by mjm88
    Replies
    9
    Views
    1,038

    It does come on there from the factory. We do...

    It does come on there from the factory. We do warranty work for true and i've seen it on a couple of the 72f units
  28. Replies
    18
    Views
    2,989

    Thats a good idea. When you walk up on a unit...

    Thats a good idea. When you walk up on a unit thats leaking on the stem and the plastic cap is cracked because someone put leak lock on it and cranked on it till it snapped. :gah:
  29. i've never seen a system messed up from dye. Not...

    i've never seen a system messed up from dye. Not saying it doesn't happen but i have never seen it. We do use dye. I personally try not to, but sometimes it is a good alternative. I carry the yellow...
  30. Replies
    3
    Views
    475

    We deal with multiple refrigerants day in and day...

    We deal with multiple refrigerants day in and day out and only carry one recovery unit on our trucks. We have never had a problem with it. I always make sure i purge the excess pressure out of the...
  31. Replies
    11
    Views
    1,482

    :yes: :yes: I have seen this more than once...

    :yes:

    :yes: I have seen this more than once cause intermittent freeze up's and it always does it overnight or when your not there. Can be extremley frustrating
  32. Replies
    558
    Views
    61,788

    Get an Allen wrench not sure what size and try...

    Get an Allen wrench not sure what size and try tightening up the fitting on the side. Took care of that problem for me
  33. Replies
    5
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    882

    I don't think i'm opposed to anything right now.

    I don't think i'm opposed to anything right now.
  34. Replies
    5
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    882

    I am no self employed, I am a refrigeration tech...

    I am no self employed, I am a refrigeration tech that currently works on anything from parrallel rack systems to soda dispensers. I have an associates degree from our local college in hvac/r tech. I...
  35. Replies
    5
    Views
    882

    supermarket refrigeration

    looking to get into supermarket refrigeratoin in the cenrtal illinois area. i have been doing some small scale supermarket work in the area and want to get more involved. any input is appreciated.
  36. Replies
    32
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    3,284

    that looks like it was drilled...loo how clean...

    that looks like it was drilled...loo how clean the edge of the hole is:.02:
  37. Replies
    558
    Views
    61,788

    Its on the faceplate. Thanks for the help!:cheers:

    Its on the faceplate. Thanks for the help!:cheers:
  38. Replies
    558
    Views
    61,788

    Hey Doug is there a way I can get a replacement...

    Hey Doug is there a way I can get a replacement cap for my ak900. The wind caught a panel off a condensing unit and slammed it against the AK. All it did was cut the part of the cap off that holds...
  39. Thread: epr valve

    by mjm88
    Replies
    6
    Views
    1,206

    I appreciate the info guys. Still pretty new....

    I appreciate the info guys. Still pretty new. Especially to the supermarket world. Any info is greatly appreciated:cheers:
  40. Thread: epr valve

    by mjm88
    Replies
    6
    Views
    1,206

    I installed new internal parts and replaced the...

    I installed new internal parts and replaced the pilot assembly
  41. Thread: epr valve

    by mjm88
    Replies
    6
    Views
    1,206

    I verified it was the EPR building pressure by...

    I verified it was the EPR building pressure by pinching off the bottom pilot line. If I'm thinking right. If the high pressure line shuts off with the solenoid on the EPR won't the valve go wide open...
  42. Thread: epr valve

    by mjm88
    Replies
    6
    Views
    1,206

    epr valve

    I recently came across a system that was out on oil pressure i reset the system and observed my oil pressure. I was running 50 psi of oil pressure. I went ahead and replaced the compressor contactor...
  43. Replies
    12
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    1,507

    How does that work? Just curious

    How does that work? Just curious
  44. Replies
    23
    Views
    1,723

    This is a good way for us new guys to learn. keep...

    This is a good way for us new guys to learn. keep 'em comin engineer dave!:cheers:
  45. Replies
    23
    Views
    1,723

    No it is not floodback. All the frost means is...

    No it is not floodback. All the frost means is that the suction line and crank of the compressor is below 32*. Of course you would need to do superheat to verify it is not flood back
  46. I had no idea this existed! just ordered one last...

    I had no idea this existed! just ordered one last night lol!
  47. Thread: pneumatics

    by mjm88
    Replies
    7
    Views
    839

    thanks! i'll check that out

    thanks! i'll check that out
  48. Thread: norlake

    by mjm88
    Replies
    22
    Views
    1,500

    same here. every subway around here runs those...

    same here. every subway around here runs those for walkin coolers and freezers
  49. Thread: pneumatics

    by mjm88
    Replies
    7
    Views
    839

    pneumatics

    does anyone have a good place to start on learning some pneumatic controls for air handlers. i have absolutley 0 information on this. im just taking over and account and their air handlers w/ water...
  50. i agree startup should be done as per...

    i agree startup should be done as per manufacturer. as far as service i have found it comes with experience and asking question from knowledgable people. and this place is loaded with knowledgable...
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