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  1. Thread: beacon I

    by BDOLIN
    Replies
    17
    Views
    758

    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...
  2. Replies
    14
    Views
    1,043

    Sorry, i should not have included the website in...

    Sorry, i should not have included the website in the post.
  3. Replies
    14
    Views
    1,043

    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...
  4. Replies
    9
    Views
    486

    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...
  5. 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...
  6. Thread: Beacon II

    by BDOLIN
    Replies
    20
    Views
    1,905

    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...
  7. Replies
    28
    Views
    2,064

    Do you have to take a stiff exam to work there?

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

    by BDOLIN
    Replies
    13
    Views
    1,279

    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,...
  9. Replies
    13
    Views
    964

    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...
  10. Replies
    24
    Views
    2,089

    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:
  11. Replies
    34
    Views
    2,618

    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...
  12. Replies
    34
    Views
    2,618

    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...
  13. Replies
    3
    Views
    361

    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...
  14. Replies
    10
    Views
    752

    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...
  15. 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)
  16. 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. ...
  17. Thread: Body cooler

    by BDOLIN
    Replies
    26
    Views
    1,942

    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;-)
  18. Replies
    21
    Views
    1,999

    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...
  19. Replies
    24
    Views
    2,258

    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...
  20. Replies
    24
    Views
    2,258

    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...
  21. Replies
    24
    Views
    2,258

    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.
  22. Replies
    24
    Views
    2,258

    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...
  23. Replies
    24
    Views
    2,258

    370431I don't think the "before" photo linked in...

    370431I don't think the "before" photo linked in correctly. Here it is.
  24. Replies
    24
    Views
    2,258

    Here's the after picture of the same job. 368291

    Here's the after picture of the same job.
    368291
  25. Replies
    24
    Views
    2,258

    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...
  26. Replies
    12
    Views
    1,041

    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...
  27. 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...
  28. Replies
    36
    Views
    3,520

    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...
  29. 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...
  30. Replies
    52
    Views
    4,252

    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...
  31. Replies
    52
    Views
    4,252

    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?
  32. Replies
    4
    Views
    663

    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...
  33. Replies
    60
    Views
    10,034

    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...
  34. Replies
    60
    Views
    10,034

    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...
  35. Replies
    43
    Views
    6,225

    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...
  36. Replies
    16
    Views
    2,663

    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...
  37. Replies
    6
    Views
    1,684

    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.
  38. Replies
    60
    Views
    10,034

    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...
  39. 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...
  40. Replies
    60
    Views
    10,034

    How did these installations work out?

    How did these installations work out?
  41. Replies
    15
    Views
    1,937

    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.
  42. Replies
    25
    Views
    3,798

    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...
  43. Replies
    60
    Views
    10,034

    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...
  44. Replies
    60
    Views
    10,034

    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....
  45. Replies
    14
    Views
    2,081

    :.02:Agree with Crackertech. The sensor should...

    :.02:Agree with Crackertech. The sensor should feel only the return air not any surface like the wall, ceiling or even the coil itself. I would say near where the fan pulls the most air through the...
  46. Replies
    60
    Views
    10,034

    ITSICEMAN is right. Potentially, the most...

    ITSICEMAN is right. Potentially, the most dangerous time for liquid getting to the compressor is just before a defrost and at the start of a defrost. As ice builds on an evap, heat transfer goes...
  47. Replies
    60
    Views
    10,034

    How did this work out for you? Do you have any...

    How did this work out for you? Do you have any questions?
  48. Replies
    16
    Views
    1,408

    I think Phase Loss is on the right track....

    I think Phase Loss is on the right track. Electric defrost heaters are spot heaters in that the parts of the coil closest to the heaters get very hot, while parts of the coil that are further away...
  49. Thread: Powering VFD's

    by BDOLIN
    Replies
    19
    Views
    1,388

    Another thing to consider with shutting off VFDs...

    Another thing to consider with shutting off VFDs is the ambient temp. Most drives are only rated for -10C or -20C ( 14F to-4F) If they are mounted outside and not powered the oil in the capacitors...
  50. Running the fans in reverse on air cooled...

    Running the fans in reverse on air cooled condensers does have some value in pushing dry dirt out. It doesn't replace a good wet cleaning but can be quite useful between them.
    I put a unit into...
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