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Type: Posts; User: mseng

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  1. Replies
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    Just another thought, are they doing a chiller...

    Just another thought, are they doing a chiller reset? Raising the temp of the water according to the outdoor ambient?
  2. Replies
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    1,955

    The thing I would add is cycling the fans help...

    The thing I would add is cycling the fans help lower energy usage. Be careful on setting the fan cycle lower than the Headmaster otherwise they will be fighting each other.
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    I enjoy reading about others problems and...

    I enjoy reading about others problems and learning from them along with giving advice to help them out.
  4. Thread: Tyler Rack

    by mseng
    Replies
    8
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    935

    The newest version of Danfoss AK2 controllers...

    The newest version of Danfoss AK2 controllers have an option to setup the enviroguard. Just tell it it has a enviroguard and it will give you the inputs.
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    1,812

    Thanks for the feed back, going to go Pro someday.

    Thanks for the feed back, going to go Pro someday.
  6. Thread: INVERTER SYSTEMS

    by mseng
    Replies
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    612

    What brand? What model? More infomation needed...

    What brand? What model? More infomation needed give us all you got.
  7. Replies
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    1,812

    Low temp rack is running way to low suction. A...

    Low temp rack is running way to low suction. A -22 evaporator with R404 would only need a 17 cut-in on an RMCC. This is creating a high compression ratio, which will break rods. It looks like your...
  8. Replies
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    744

    I prefer CPC but the Danfoss can read quit a few...

    I prefer CPC but the Danfoss can read quit a few different companies temperature and pressure sensors if you already have them installed.
  9. Thread: INVERTER SYSTEMS

    by mseng
    Replies
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    612

    What systems? We need more information than this.

    What systems? We need more information than this.
  10. Replies
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    1,796

    Most home owners just want it to work and do not...

    Most home owners just want it to work and do not care so much for the safty aspect, but how much does it cost.
  11. With the climate you are in the only answer is to...

    With the climate you are in the only answer is to thaw it out and reinsulated with new sorry.
  12. Thread: Coil combs

    by mseng
    Replies
    8
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    1,004

    I have found the wire fin combs will fall out...

    I have found the wire fin combs will fall out with time so I put a line of silicon along both edges where they are crimped in before using them.
  13. Thread: Coil combs

    by mseng
    Replies
    8
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    1,004

    The fin comb that looks like a bunch of thin...

    The fin comb that looks like a bunch of thin wires work for most sizes. That way you just have to carry one. Google the image.
  14. Replies
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    1,366

    A good tank of CO2 will blow just about anything...

    A good tank of CO2 will blow just about anything out.
  15. Thread: Bryan boilers

    by mseng
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    668

    http://www.bryanboilers.com/boilers_lit_water_io_d...

    http://www.bryanboilers.com/boilers_lit_water_io_data.html

    Give this site a try.
  16. Replies
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    2,171

    Have you found anyone yet? I write software for...

    Have you found anyone yet? I write software for just this kind of monitoring. We already have Danfoss and CPC monitoring software in use by another large company. Can make contacts or deliver alarms...
  17. Thread: Super heat

    by mseng
    Replies
    13
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    1,580

    On a medium temperature application the 6-8 is...

    On a medium temperature application the 6-8 is correct. The closer you get to the 6 the better the efficient the unit will run saving the costumer energy.
  18. Replies
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    1,666

    Running low suctions will give you a large...

    Running low suctions will give you a large compression ratio. Copleand does not recommend anything over 10 to 1.
  19. Replies
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    1,921

    Seeing that they are TXV systems and they have a...

    Seeing that they are TXV systems and they have a sight glass. Make sure they are charged with a full sight glass then recover it all out and weigh it that is the quickest way when you do no have any...
  20. Replies
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    1,627

    You can lay them on there side for as long as you...

    You can lay them on there side for as long as you like just as long as you set them up without plugging them in for 24 hours.
  21. Thread: PMs for racks

    by mseng
    Replies
    26
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    4,042

    If the system is tight and the people working on...

    If the system is tight and the people working on it use good practices the oil never needs changed under normal use. How many times have you changed your oil on your wifes refrig?
  22. Replies
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    4,900

    I would be interested in what LED lights you...

    I would be interested in what LED lights you installed and where you picked them up?
  23. Thread: POE and MP39

    by mseng
    Replies
    6
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    1,560

    I have left the MO in MP39 larger supermarket...

    I have left the MO in MP39 larger supermarket systems and have been running for over 8 years without any problems.
  24. Replies
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    1,175

    I agree and another benifit is more efficient...

    I agree and another benifit is more efficient unit lowing the electric usage making a quicker pay back.
  25. Replies
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    9,775

    They work very well when you have a rack that is...

    They work very well when you have a rack that is over sized for the load. You will have much less short cycling of the compressors saving contactors and compressor life. I also agree with all the...
  26. Thread: Hill Rack

    by mseng
    Replies
    11
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    1,134

    If you have felt suction cores they will hold a...

    If you have felt suction cores they will hold a lot of dirt and as the oil passes through them it will pick some of it back up. So if the oil is discolored then change the suction cores also.
  27. Replies
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    LED’s work great and lower the heat load on the...

    LED’s work great and lower the heat load on the compressor. The only down side I have found is on some systems you can get frosting around the doors because of the lost heat generated by the...
  28. Replies
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    I would suspect the cap tube sizing or the amount...

    I would suspect the cap tube sizing or the amount of charge, because if it is 30 years old it would not have been manufactured with 134a.
  29. Replies
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    Please check the voltage rating on the cap. It...

    Please check the voltage rating on the cap. It should be greater than the voltage to the compressor. Example if the compressor is 220V then the cap should be say a 330V.
  30. Thread: old evap coil

    by mseng
    Replies
    6
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    948

    If you suspect the TXV’s are over sized and you...

    If you suspect the TXV’s are over sized and you can not find out the BTU’s of the coil without doing a tube/fin calculation. You need to check the superheat and if you cannot throttle it down then...
  31. Thread: Bohn coil leak

    by mseng
    Replies
    8
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    1,439

    Just be careful on the amount of heat you put on...

    Just be careful on the amount of heat you put on old copper. It becomes thin over time and will melt and collapse easily with too much heat.
  32. Replies
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    4,852

    Working with the foam isolating covering a...

    Working with the foam isolating covering a evaporator I have found leaks under the foam by poring soap bubbles over the foam and letting it soak for a bit and then the bubbles occur. You can not use...
  33. Replies
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    1,584

    The other thing you might check is the gear box,...

    The other thing you might check is the gear box, if it is old and the oil has turned to grease it will pull more amperage.
  34. Replies
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    Over time the ice cylinder scores or gets pitted...

    Over time the ice cylinder scores or gets pitted and accumulates lime. Under the worse conditions you will need to pull the auger and hone the cylinder smooth again. I would replace the bearing and...
  35. Thread: plugged captubes

    by mseng
    Replies
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    2,208

    POE oil is a very good cleaner, so if the system...

    POE oil is a very good cleaner, so if the system was put in under less than optimal conditions the oil is bring back dirt to plug things up. The other thing to look at is has someone added UV dye...
  36. Replies
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    1,625

    CPC boards do not need to be terminated when they...

    CPC boards do not need to be terminated when they are first installed; however, they should be. The low voltage communication will work until it gets some age on it. I have seen them work for a...
  37. Replies
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    The other thing to look at is the set points. If...

    The other thing to look at is the set points. If they are running too cold you will see frost built up like this also.
  38. Thread: Hussman Protocol

    by mseng
    Replies
    24
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    6,086

    We have quit a few protocols with electronic...

    We have quit a few protocols with electronic controls they are very reliable. The short cycling normally comes from being oversized. They are not too bad to work on if you can get around them, all...
  39. Thread: E2 "Reclaim In"

    by mseng
    Replies
    3
    Views
    546

    Yes, is does shift up the condenser set point to...

    Yes, is does shift up the condenser set point to enable more heat for reclaim. Look under the condenser application to see the amount you are shifting.
  40. Raise the suction cut-in just as high as you can...

    Raise the suction cut-in just as high as you can and still maintain temperatures. For example a 20 rack running R-22 I would give it a cut-in of #44 and let the Alteh do the work. This will allow...
  41. Thread: Supermarket PM

    by mseng
    Replies
    9
    Views
    902

    Here is a short list for a rack system with...

    Here is a short list for a rack system with electronic controls
    1. Check ALL transducers-calibrate/replace as necessary
    2. Check ALL set points and programming
    3. Investigate All case temps....
  42. The demand cooling control can be checked by...

    The demand cooling control can be checked by pulling the sensor off of the control and after about 2 minutes it should shut down the compressor if it is working and no one has bypass the wiring.
  43. Replies
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    8,066

    Talk to the parts supply house about a water...

    Talk to the parts supply house about a water cooled condenser. It will hold up well with lime build up for a few years.
  44. I do not know the laws in the UK, but do you...

    I do not know the laws in the UK, but do you really want to put refrigerant lines underground subject to vibration of the earth with rocks causing possible leaks? At least with treated water the leak...
  45. Replies
    6
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    4,643

    My water furnace will heat my water for the whole...

    My water furnace will heat my water for the whole family without any additional element heat when the outdoor ambient drops below 20 degrees. Nice extra.
  46. Replies
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    4,073

    Water furnace had a rash of bad TXV's I would...

    Water furnace had a rash of bad TXV's I would have a WF tech look at it the Envision series has a 10 year warranty
  47. Replies
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    4,657

    Check the thermostat settings some they have a...

    Check the thermostat settings some they have a differential that can be set. If the room temperature drop degree the unit will bring on 2nd stage, then make sure the auxiliary needs a 1 degree drop...
  48. You have air heat now and going to hydronic is...

    You have air heat now and going to hydronic is very expensive, but very comfortable. It can be done just order the geo without the electric backup and put a relay in to bring on the boiler. I would...
  49. With a geo system you do not want to do a night...

    With a geo system you do not want to do a night setback. Because the unit will turn on then find out it cannot make set point so it will bring on 2nd stage then auxiliary heat costing you money. ...
  50. Replies
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    2,473

    Sounds like you are trying to make a cascade...

    Sounds like you are trying to make a cascade system out of a geo. If you want to make it more efficient easily then just add more footage to your loop.
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