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  1. Well, I went there today and the machine was...

    Well, I went there today and the machine was gone. In its' place was something that looked older. A unit made by Mulco Manufacturing. The tag was worn away so no m/n or s/n, etc.

    The cube control...
  2. Thank you for the replies. Will be going back...

    Thank you for the replies. Will be going back there today.

    When I was there last after removing the sheet of ice:

    The cubes fell separately, and where the correct size as depicted in the...
  3. It is the older style, as ECTofix described. I...

    It is the older style, as ECTofix described. I vaguely remember reading here that as the nickel plating wears off, the ice tends to stick to the evaporator. Don't know if I'm correct about that. ...
  4. Scotsman CM250EA-1E with intermittent harvest

    Hello,
    I had removed a plate of ice from the back about 30hours ago watched it go through several cycles, observed the timer motor moving and timed the freeze cycles which were average about 24min. ...
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    Yea it looks it. I was told that at it's...

    Yea it looks it. I was told that at it's previous location, they would regularly hit the reset. I'm guessing the high pressure reset.

    Thanks for the identification and the link for the manual....
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    Can you identify this Scotsman?

    Hello,
    Can anyone help identify this ice machine? The model and serial numbers have worn off. Once the numbers are found, where can I retrieve the service manuals for it.
    It goes in a soon to...
  7. Thanks for the replies. I purchased the...

    Thanks for the replies. I purchased the HVAC-Calc. Now I see that those who have replied prefer WrightSoft. Well, I hope the former will work out.
    Thanks again for the replies. Now to put these...
  8. Survey: Favorite HVAC load calculation software

    Hello Everybody,
    I'm considering purchasing some new HVAC load calculation software. So which software is your favorite? What would you recommend?
    Thanks for the replies.
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    I'm going to leave the trap in place, and explain...

    I'm going to leave the trap in place, and explain to them the pros and cons($) regarding installing an accumulator.

    Thanks for the link and advice.

    Now if they would only return phone calls,...
  10. Replies
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    1,151

    I've not been able to get back there. Hopefully...

    I've not been able to get back there. Hopefully today. The TXV is, as I remember, rated for: 502, 402, 404a, and something else. I don't know the size yet. Or the evaporator numbers.
    I was going...
  11. Replies
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    1,151

    I got the m/n on the compressor and condensing...

    I got the m/n on the compressor and condensing unit. According to the supply house, the compressor in question is compatible to the condensing unit and is suitable for a -20deg. evaporator with 404a...
  12. Replies
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    1,151

    Thanks for the response. If the compressor...

    Thanks for the response.

    If the compressor can be saved, the customer would really appreciate it. I can barely read the model numbers on the condensing unit. Should I be able to find out what...
  13. Replies
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    Sometimes, you just have to fire your customer. ...

    Sometimes, you just have to fire your customer. It's hard to do that in a tight economy, but sometimes the stress is not worth it as has been well said previously.

    Alot of the time, I'll explain...
  14. Replies
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    1,151

    Vapor charged 402a Low temp walk-in

    This week I looked at low temp walk-in cooler. That alot of people have been working on.

    I found a leak in the discharge line and at the external equalizer line.

    The owner told me that the...
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    2,085

    Well, They found someone else who sold them and...

    Well,
    They found someone else who sold them and installed a used Hoshizaki. I put together a quote to replace the equipment but it was too high. Being a one-man company, it don't have used...
  16. Replies
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    Well, the manual on page 3-6 indicates a 110deg...

    Well, the manual on page 3-6 indicates a 110deg angle for the probe end. That is what I was referring to. I must not have been clear in the first description. Sorry.
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    So the general consensus is to replace the...

    So the general consensus is to replace the equipment.

    This unit is "only" about eleven years old. Is that normal? I'm thinking that it isn't, because this one has been not maintained real well...
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    Manitowoc question

    Hello,
    I'm working on a Manitowoc. The m/n QD0892N s/n 981064521 and the remote condenser m/n JC0895 s/n 981190055.

    There are several questions and issues regarding the unit.

    First, the...
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    Yeah, that makes sense. I haven't called them...

    Yeah, that makes sense. I haven't called them about the bad news regarding their equipment. I assume it's still working, but it would be good to give them a heads up about its' future prognosis.
  20. Replies
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    It seems that Scotsman is not a popular brand...

    It seems that Scotsman is not a popular brand here. NFI. I'm just curious as to why.
  21. Replies
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    HeyBob I used a generic, 'Nickle-safe'...

    HeyBob

    I used a generic, 'Nickle-safe' ice-machine cleaner. It was like that already. I know that sounds kind of lame, but that's the truth.
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    Thanks for the comments.

    Thanks for the comments.
  23. Replies
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    Would you sell them a new unit or replace the...

    Would you sell them a new unit or replace the evaporator?
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    Cracked Heat Exchanger

    This came out of a RV. It was being used all last winter and I changed it out this fall. Well actually, I had taken it apart for them and they had a friend put the new one in to save $ I suppose. ...
  25. Replies
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    1,802

    Nickle coating on a Scotsman

    I was working on a Scotsman M/N SCE170-A S/N 575776-10 and noticed some of the coating to be wearing off. At what point, or how much has to wear off before it's time to replace the evaporator or...
  26. Replies
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    2,610

    I'm putting together a quote to replace the...

    I'm putting together a quote to replace the evaporator. It will have the "Bohn-Kote" on it. Thanks for the link.
  27. Replies
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    Thanks very much for all the responses.

    Thanks very much for all the responses.
  28. Replies
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    2,610

    O.K. How often do you think the coils would need...

    O.K. How often do you think the coils would need to be cleaned to prevent the acids from eating them?
  29. Replies
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    Thanks for the responses. This one is in a...

    Thanks for the responses. This one is in a kitchen in the county jail. So they store meats, vegies, cooked stuff, dairy products, eggs, etc.

    Acids from the foods make alot of sense. So I...
  30. Replies
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    Causes for rotted evaporator coils

    Hello Everyone,
    I'm working on a Heatcraft, medium temp., walk-in. R-22. The condensing unit is: M/N MOH008D72CF S/N T03H01639. The evaporator is a BOHN M/N ADT070AK
    S/N D03A11213 but has a...
  31. Replies
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    I've only learned how to charge, diagnose, etc....

    I've only learned how to charge, diagnose, etc. using the precision instruments.
    For example, using the voltmeter to check for voltage. I suppose one could feel the magnetic field generated by...
  32. Replies
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    Feel the side of the condenser and judge the...

    Feel the side of the condenser and judge the charge just so while watching suction pressure.

    That's interesting, never heard of it. So if the bottom of the condenser feels "OK" that is, room...
  33. Replies
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    Thanks jp. It was starting to get complicated. I...

    Thanks jp. It was starting to get complicated. I feel better now.
  34. Replies
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    About 1.5ft from the compressor. The suction line...

    About 1.5ft from the compressor. The suction line as it comes through the wall and to the compressor about 5ft is not insulated. Thanks for the link, crackertech
  35. Replies
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    1,861

    I added 16lbs. and cleared the glass with a...

    I added 16lbs. and cleared the glass with a 5-8deg subcooling. At about 80deg. ambient, the pressures were: 220-250 high and 16 low, 50deg. superheat, box temp. was -5deg to 0deg.
    I think the unit...
  36. Replies
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    O.K. Thanks, Monday I'll go back to add more to...

    O.K. Thanks, Monday I'll go back to add more to clear the glass. Then persuade them to let me fix any leaks and redo the suction line.
  37. Replies
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    Thanks for the response. What do you think of...

    Thanks for the response. What do you think of the discharge pressure?



    Could you say more about torching the receiver(s) to determine liquid level? BTW, there are two receivers in the...
  38. Replies
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    Problems with a low temp. walk-in

    First, here are the specs.
    Condensing unit: Copeland M/N C3AL-0301-TAC-001 S/N 605-2897
    Compressor (Not original) Copeland LAHA-032E-TAC-800 S/N 00C70702
    Evaporator: Bally M/N BF200A S/N 6260K2
    ...
  39. Replies
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    Thanks for the links and methodologies. I...

    Thanks for the links and methodologies.

    I need to tap in a line above a factory filter/drier to see if there's any pressure drop across it. Also got another situation where someone trashed a...
  40. Replies
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    Accessing systems w/o service valves

    Hello,
    What has anyone found to be the best way to access systems that have no service valves or shrader valves? I found those Bullet piercing valves to tend to leak. What other options are there?...
  41. Thread: R-404a question

    by gesinc
    Replies
    9
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    1,185

    Yes, it's cooling at -10deg. and the tubes are...

    Yes, it's cooling at -10deg. and the tubes are equally frosted now. They used to have chunks of ice on them from, I guess, multiple cycles and not melting off in the defrost cycle. The evaporator...
  42. Thread: R-404a question

    by gesinc
    Replies
    9
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    1,185

    Thanks Icemeister for the link. This exact unit...

    Thanks Icemeister for the link. This exact unit was not in their manual, so I called the tech support. The receiver on a 90deg. day @90% full would hold 41.5 lbs.
    What they said, at a 70-80deg....
  43. Thread: R-404a question

    by gesinc
    Replies
    9
    Views
    1,185

    Yes, it has a receiver. I go back today to see if...

    Yes, it has a receiver. I go back today to see if the TXV has settled down, replace the crankcase heater, and finish charging it.
  44. Thread: R-404a question

    by gesinc
    Replies
    9
    Views
    1,185

    Thanks very much. It had me concerned.

    Thanks very much. It had me concerned.
  45. Thread: R-404a question

    by gesinc
    Replies
    9
    Views
    1,185

    R-404a question

    I've been working on a Masterbilt five-door reach-in freezer. The condensing unit m/n BSLZ028UCC s/n HQ393938. Cleaned the condenser coil, replaced a seized condenser motor,and found a loose service...
  46. Thread: PTC Fireworks!

    by gesinc
    Replies
    9
    Views
    1,285

    sapper Yes, that's right. I think United...

    sapper

    Yes, that's right. I think United Technology owned brands such as Carrier use them alot. Though I'm not sure who owns whom.
  47. Replies
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    When I removed the boards, it sure wobbled alot....

    When I removed the boards, it sure wobbled alot.
    BTW this unit is in a double-wide and the resident was saying that there was little airflow on the side that was furthest away from the unit. I...
  48. Thread: PTC Fireworks!

    by gesinc
    Replies
    9
    Views
    1,285

    PTC Fireworks

    From what I understand, it's a Positive-Temperature-Coefficient-Resister.
    It allows current to flow to the start winding on start-up, but only momentarily, because with more current flow, there is...
  49. Replies
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    I had removed some of the boards that were...

    I had removed some of the boards that were directly over the outdoor fan, which helped bring the head pressure down. Then cleaned the outdoor coil. Of course I couldn't remove the top completely,...
  50. Replies
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    Possible air restriction

    On a 90deg day the head pressure was pretty high. I'm not sure which was put in first, the deck or the unit. The owner says the deck was there first. Installing that unit must have been difficult.
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