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Type: Posts; User: BDOLIN

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  1. Replies
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    The fan side of the coil is usually the coldest. ...

    The fan side of the coil is usually the coldest. If there was a short charge or choked TEV, I would expect the coil to frost more close to the TEV.
    I assume you checked the heaters, since it going...
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    Once tried a heat gun to dry my hair quickly...

    Once tried a heat gun to dry my hair quickly
    Should grow back eventually...
  3. Replies
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    Break down water? Now you have free hydrogen and...

    Break down water? Now you have free hydrogen and free oxygen in the system. Don't think so!
  4. Replies
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    I have found that the torch flame sort of bounces...

    I have found that the torch flame sort of bounces off the ice rather than heating it.

    The real issue is to solve the icing problem. Placing a solid state sensor, or two, in the fins of the coil...
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    Pardon me if this shows up twice, I lost the...

    Pardon me if this shows up twice, I lost the internet for a moment.

    For freezer applications, we suggest KE2 Evaporator Efficiency controllers on each coil,since the needs for defrost will be...
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    The controller will control a liquid line...

    The controller will control a liquid line solenoid and/or an EEV. When satisfied on temperature, or during defrost, the EEV will close along with the solenoid. On a retrofit, there is no need to...
  7. Thread: beacon I

    by BDOLIN
    Replies
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    1,430

    Be careful with temperature sensors, they are not...

    Be careful with temperature sensors, they are not all the same. There are nominal 2k, 5k, 10k, etc but that only means they have a resistance of 2,000 ohms (or 5,000, or 10,000 ohms, etc) at 77*F or...
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    Sorry, i should not have included the website in...

    Sorry, i should not have included the website in the post.
  9. Replies
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    There are three products and selection depends on...

    There are three products and selection depends on your needs.
    KE2Temp+defrost is for off cycle defrost, time initiate, time terminate. It is dual voltage and includes the thermostat and timeclock...
  10. Replies
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    While it can't fix a leaky walk-in, a controller...

    While it can't fix a leaky walk-in, a controller with pro-active defrosts and door switch controlled fans can help minimize the pain. We have had lots of good results with that. Heaters cycled on...
  11. In a perfect world defrost clocks wouldn't be...

    In a perfect world defrost clocks wouldn't be needed on a cooler, but the rest of us live in a world of open doors, people who want the coldest beer in town and clerks who turn off the fans because...
  12. Thread: Beacon II

    by BDOLIN
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    2,450

    I hear bad things about Beacon, but then I am...

    I hear bad things about Beacon, but then I am biased. There are other alternatives to the Beacon out there that may have more features and less cost. Ability to use any valve, free communication...
  13. Replies
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    Do you have to take a stiff exam to work there?

    Do you have to take a stiff exam to work there?
  14. Thread: Walk in cooler

    by BDOLIN
    Replies
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    1,646

    I suspect it is both-short charge and damaged...

    I suspect it is both-short charge and damaged valve. The stem packing on TEVs is there to keep you from getting freezer burn when you adjust the valve, it is not a good seal. Without the seal cap,...
  15. Replies
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    1,261

    I am not sure if you are referring to the...

    I am not sure if you are referring to the KE2Therm Temp+Defrost controller. The KE2Te3mp+defrost has a switch only for selecting 120v or 230 v. The "power robbing" mode is just a jumper to the...
  16. Replies
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    I don't see the problem.If the product is right...

    I don't see the problem.If the product is right up against the coil it gets cold by conduction.:grin2:
  17. Replies
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    There is no question that sensors have been a...

    There is no question that sensors have been a real thorn in the side of electronic controls. however, we have made great progress. Our parts per million failure i for temp sensors is 366 and for...
  18. Replies
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    3,182

    Mechanical timers and thermostats were good in...

    Mechanical timers and thermostats were good in their day but the world has moved on. Some of the original electronic controls were real nightmares-not particularly reliable and totally not user...
  19. Replies
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    There has never been an owner who thought the box...

    There has never been an owner who thought the box was cold enough or who didn't think that setting the thermostat very low makes the box get cold faster.
    Some electronic controls can act as...
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    EC Motors (electronically commutated motors) come...

    EC Motors (electronically commutated motors) come in a couple of different flavors. They can be constant speed, sometimes 2 speed and variable speed. Constant speed can be just two wires and all...
  21. You are supposed to take the shipping plugs...

    You are supposed to take the shipping plugs OUT!!! I thought that is what the FILTER DRIER is for!!!
    (when I was with Sporlan, we occasionally got driers back with pipe plugs in them)
  22. A proactive defrost controller would respond to...

    A proactive defrost controller would respond to changes to conditions or loading and adjust the defrosts accordingly. Coolers "don't need defrosts" but we know that is not true in the real world. ...
  23. Thread: Body cooler

    by BDOLIN
    Replies
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    2,424

    I hear you have to pass a stiff exam to get into...

    I hear you have to pass a stiff exam to get into that line of work;-)
  24. Replies
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    2,481

    I think that just shutting off fans may not be a...

    I think that just shutting off fans may not be a good thing for the system. The compressor is bound to be very unhappy sooner or later! Of course, once the compressor breaks, the room will get...
  25. Replies
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    You are absolutely correct, this is an extreme...

    You are absolutely correct, this is an extreme case and was 2 years in the making. If just a little frost is left on the coil during each defrost, over time the coil can bunker up with ice. The...
  26. Replies
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    The controller set up its own defrosts, it was...

    The controller set up its own defrosts, it was not timeclock based. The controller looks at evap efficiency and triggers a defrost when the evap loses 10% of its capacity. With the fan and...
  27. Replies
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    BTW-the box cleared simply with the pro-active...

    BTW-the box cleared simply with the pro-active defrost control. No chisels, or backhoes, were used. Time between the two photos is 5 weeks.
  28. Replies
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    From my understanding, it was an operational...

    From my understanding, it was an operational issue. The box had consistent icing issues for at least two years. Lots of activity, lots of door openings and too many defrosts causing excessive...
  29. Replies
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    370431I don't think the "before" photo linked in...

    370431I don't think the "before" photo linked in correctly. Here it is.
  30. Replies
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    Here's the after picture of the same job. 368291

    Here's the after picture of the same job.
    368291
  31. Replies
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    Dchappa may have the right idea. With proper...

    Dchappa may have the right idea. With proper defrost and fan control, the frost can sublimate, going directly from ice to vapor without actually melting. It will reclaim the cold of the ice to...
  32. Replies
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    366741 the bad news is, more electric defrosts...

    366741
    the bad news is, more electric defrosts really bump air temp.


    the good news is that proactive defrosts, heater management and sublimation can really reduce the temperature swing
    366751...
  33. I agree with Cavalieri85. Placing the sensor in...

    I agree with Cavalieri85. Placing the sensor in the fins where the ice persists will guarantee a clean coil. We have found that to be very effective. You will have to force a complete defrost to...
  34. Replies
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    Lot's of guidance here on the source of the...

    Lot's of guidance here on the source of the moisture. Door openings, leaky seals, etc. but moisture will always get into the box. The solution is to get good, complete defrosts, at the proper time...
  35. The coldest part of the coil is often on the fan...

    The coldest part of the coil is often on the fan side. This is because the warmest air enters the back of the coil and most refrigeration circuiting is set so that the air hits the coldest part of...
  36. Replies
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    Of course you are right, cases in supermarkets...

    Of course you are right, cases in supermarkets with common suction groups would not be divided. Since these two cases are on separate condensing units, I wonder if the warmer air from one case in...
  37. Replies
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    Shouldn't there be a divider (plastic wall)...

    Shouldn't there be a divider (plastic wall) between the two cases to prevent what happens in one to affect the other?
  38. Replies
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    If you can do a "copy screen" of the graphs and...

    If you can do a "copy screen" of the graphs and post here, we can give you more information.
    During the first day or so of new operation, the KE2 controller will initiate and terminate a few...
  39. Replies
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    11,719

    One last comment on the IP address. Each...

    One last comment on the IP address. Each controller has a unique IP address but they are in the 10.10.xx.xx format. 10.10. numbers are non-routable meaning they cannot be directly addressed from...
  40. Replies
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    Thanks for your interest and confidence in the...

    Thanks for your interest and confidence in the controller.
    Here a few comments and answers on the KE2Evap controller. Defrostmadness is correct that the controller will force itself into a defrost...
  41. Replies
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    I also just read all the threads and did not...

    I also just read all the threads and did not realize it was started in 2005!
    A lot has happened with electronic control systems since then and there are now controls out there that combine all the...
  42. Replies
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    Fan cycling can be done for a number of reasons,...

    Fan cycling can be done for a number of reasons, but primarily for energy savings. How much is saved in a small reach in is debatable but in walk-in coolers and freezers it can be significant. Fans...
  43. Replies
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    I would be happy to answer any questions you may...

    I would be happy to answer any questions you may have about the KE2Therm controller.
  44. Replies
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    11,719

    Thanks Dave, This is what we expect from the...

    Thanks Dave,
    This is what we expect from the control, and have seen this in several thousand installations. I would not be surprised to see the defrosts space out even further as the humidity begins...
  45. A newer system out there cycles the heaters...

    A newer system out there cycles the heaters during a defrost based on temperature rise of the coil. This wil avoid the scenario Bunny describs. If there is little or no ice, the heaters don't have...
  46. Replies
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    11,719

    How did these installations work out?

    How did these installations work out?
  47. Replies
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    If there are cans of beer in there, then you are...

    If there are cans of beer in there, then you are using the wrong bucket.
  48. Replies
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    Although we are all very comfortable with...

    Although we are all very comfortable with mechanical timeclocks, with the progress in electronics and the level of control and flexibility they offer, I think the days of mechanical defrost clocks...
  49. Replies
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    You may have been kidding about the app but I...

    You may have been kidding about the app but I found one that seems to do it all.

    Electrical Calculator by Pugazh @$3.99

    I am too cheap to buy it but have made up some excel sheets with some of...
  50. Replies
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    Measuring watts is a little tough with the...

    Measuring watts is a little tough with the equipment we normally have available.
    There are some pretty expensive "data buckets" that can do it but with just an amprobe it requires more math....
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