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  1. A large multitude of factors can damage a chiller...

    A large multitude of factors can damage a chiller long before an arbitrary date. Many of those items have nothing to do with whether the compressor is VFD driven or constant speed.
  2. 10% capacity on a fixed speed compressor uses...

    10% capacity on a fixed speed compressor uses significantly more energy than a VFD compressor at 10% capacity.
  3. Fancy! I only have the 435. It is sweet, though.

    Fancy! I only have the 435. It is sweet, though.
  4. Yep. I have seen this many times. The installing...

    Yep. I have seen this many times. The installing contractor puts in a resistor across 1&2 and then wonders why the unit won’t go into heat.

    by the way, these units can be configured a few hundred...
  5. Rogowski coils.

    Rogowski coils.
  6. you can not recalibrate the vane motor switch,...

    you can not recalibrate the vane motor switch, however, if the linkage isn't setup properly, the vanes may be fully closed, but the motor is not fully closed and the mechanical limits inside the...
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    How would you add refrigerant?

    How would you add refrigerant?
  8. Thread: Mixing of oils.

    by jayguy
    Replies
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    731

    The issue of “mixing oils” has nothing to do with...

    The issue of “mixing oils” has nothing to do with the oil. It has to do with converting from one refrigerant to another when the new refrigerant requires a different oil. The concern is if there is...
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    There can be many reasons that the next chiller...

    There can be many reasons that the next chiller starts even though the running chiller is not fully loaded. Such as inaccurate sensors, design issues, cold condenser water, etc.
  10. you can use an adapter like this:...

    you can use an adapter like this:
    https://www.fluke.com/en-us/product/accessories/adapters/fluke-pm9081
  11. Fluke 289: 0.001 mV to 1000 VDC and VAC 0.01 uA...

    Fluke 289:
    0.001 mV to 1000 VDC and VAC
    0.01 uA to 10 A AC and DC
    0.001 ohms to 500 Mohms
    temperature
    0.001 nF to 10 mF.

    no amp clamp though. I carry an add-on amp clamp from FP that goes to...
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    I have done this many times. However, I have them...

    I have done this many times. However, I have them manifolded together such that I push-pull liquid into 1 tank with the vapor going into the liquid port of another tank, etc and my recovery unit on...
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    Not replacing the valve plates means you will be...

    Not replacing the valve plates means you will be replacing the compressor. There isn’t much lubrication going on every 5 minutes with a 5 second run time. CYA and recommend valve plates.
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    Are your gages accurate?

    Are your gages accurate?
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    I have the ford 6 with eco-boost or some garbage....

    I have the ford 6 with eco-boost or some garbage. It struggles with the freeway on ramp. Iowa hills arent too bad so I don’t notice it there. I drive a lot of miles on the interstate so after I...
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    Unfortunately, the Dwyer U-tube 1227, set on an...

    Unfortunately, the Dwyer U-tube 1227, set on an incline still isn’t as accurate as the 922. And with the kit, it does much more than just gas pressures...and without running out of red dye or...
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    One of the things you will notice with it is the...

    One of the things you will notice with it is the temperature drift of the sensors. The sensors are very accurate but they drift a bit and you need to zero them out a bit more often than I like but I...
  18. Thread: Screw Vs Other

    by jayguy
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    5
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    457

    I don’t know if there is anything vastly...

    I don’t know if there is anything vastly different other than the amount of oil it pumps. Do you have an issue or other reason in mind?
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    Is this on the 3630 board you upgraded to? You...

    Is this on the 3630 board you upgraded to? You should be able to get to all of the Sales order into unless you pressed the “finish setup” button.
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    I know that a little bit of oil is used to...

    I know that a little bit of oil is used to install York’s oil less chiller orings. But it is a very small amount. I would agree with the contaminated tank theory.
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    check your inbox. it is a large file so it may...

    check your inbox. it is a large file so it may not come through. they changed the model number from LCH to YCW so i may have some of the LCH stuff if you know what model number to look for.
  22. Yup

    Yup
  23. Replies
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    Many but not all.

    Many but not all.
  24. Replies
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    With the exception of the aforementioned issues,...

    With the exception of the aforementioned issues, it is a fairly clean install. The water heater pan needs replaced. Code may not allow for a copper gas line...this varies by jurisdiction but I would...
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    If i am not pulling the charge, I go by Evap...

    If i am not pulling the charge, I go by Evap approach and Discharge Superheat.
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    i haven't seen any large chillers that are...

    i haven't seen any large chillers that are charged to subcooling except for some air cooled models. The larger the chiller, it becomes obvious that more subcooling costs more money.

    Perhaps this...
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    jayguy1 said that. Totally different person.

    jayguy1 said that. Totally different person.
  28. Replies
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    If there is a lot of oil in it, it shouldn’t take...

    If there is a lot of oil in it, it shouldn’t take too long!
  29. Replies
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    1,701

    Uhhhh, wait. Let me repost this advice from my...

    Uhhhh, wait. Let me repost this advice from my spam account.
  30. Replies
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    Dump a bunch of cheap, liquid refrigerant in it...

    Dump a bunch of cheap, liquid refrigerant in it and use an infrared meter.
  31. Silver solder, duct tape and some paint.

    Silver solder, duct tape and some paint.
  32. Replies
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    I have found that, even if the new equipment is...

    I have found that, even if the new equipment is similar to the old equipment the or the new problem is similar to the old problem, there are enough differences to confuse the 2 issues. Starting a new...
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    As for your ground fault issue, Danfoss did have...

    As for your ground fault issue, Danfoss did have some ribbon cable failures that would cause that.

    as for your overvoltage, your meter isnt deigned to handle the ACTUAL voltage going to the motor....
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    The nickel fell off?

    The nickel fell off?
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    These new designs sure are space saving.

    These new designs sure are space saving.
  36. Do you have a better picture of wire tie on the...

    Do you have a better picture of wire tie on the left? It looks tight. If it’s tight while the tubes are crushed, it could have been this way from the factory.
  37. Well, it ran fine for 6-ish years. So this...

    Well, it ran fine for 6-ish years. So this happened recently. My money is also on a water issue but I wouldn’t know what issue. Logically, the water crushed the tubes when you pulled it into a...
  38. While I don’t agree with all of your tips, I am...

    While I don’t agree with all of your tips, I am glad you got it fixed.
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    So you are chastising us for not reading your...

    So you are chastising us for not reading your description and then the rest of your post was new info.

    i’m out.
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    BluVac Pro. Don’t be tempted to go cheap. Going...

    BluVac Pro. Don’t be tempted to go cheap. Going cheap is so expensive these days.
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    Classic “hot box” pull down scenario. The design...

    Classic “hot box” pull down scenario. The design is cold and the compressor design is for a small amount of refrigerant flow. Now that it is warm, the compressor can pump MUCH more refrigerant than...
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    I have used them before. They can work very well....

    I have used them before. They can work very well. I usually use a pressure drop method but it certainly has it limitations.
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    In your particular case, M/S are probably not...

    In your particular case, M/S are probably not necessary. Adding more information helps to avoid the questions that are important. In more difficult or technical cases, the model AND serial numbers...
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    Ok...so that’s good. Still, if the water flow is...

    Ok...so that’s good. Still, if the water flow is low enough, then small movements in the PRV will cause big changes in the chilled water flow. Also consider that the PRV position sensor is kind of...
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    Low airflow is one of the most common reasons for...

    Low airflow is one of the most common reasons for low suction pressure (like a dirty air filter). Increasing airflow will not help with an oversized unit but decreasing the airflow will make the...
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    so...what is common between both chillers? i...

    so...what is common between both chillers? i suspect tube fouling on the chilled water side. i just finished troubleshooting a job that had a 4.5 psid across the evaporator (nearly exactly design)...
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    i seriously question your advice.

    i seriously question your advice.
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    I know it seems dumb, but start a new thread for...

    I know it seems dumb, but start a new thread for your issue. It helps keep things clean and then symptoms and fixes don’t get mixed between the different machines.
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    And the guy before that looked at the “12” and...

    And the guy before that looked at the “12” and thought it was 12 tons instead of 120,000!
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    Interesting and ridiculous. A 2 speed motor and 2...

    Interesting and ridiculous. A 2 speed motor and 2 contractors are cheaper, use less energy and is simpler in operation.

    As for this motor, we still haven’t heard what the line-to-line voltages...
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