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  1. Replies
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    1,917

    Reversing Single Phase Motors & such

    First off...The "ONLY" single phase A/C motor you will likely "Ever" see is the drill motor or Impact wrench (Series-Motor) you plug into an outlet. Period!!
    The most common in our industry is the...
  2. Please turn off your caps Lock. It is like...

    Please turn off your caps Lock. It is like hollering at us.
    Is there a question in your post..
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    1,079

    These smaller VFD's have the capacitor banks...

    These smaller VFD's have the capacitor banks fully charged even when the motor is not running...Sooooo...The capacitor banks are "Fully" charged awaiting a run signal..Along comes a "Very" short...
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    1,079

    I read this post twice looking for a...

    I read this post twice looking for a question...but I did come away with great bit of wisdom in the "Accepting Stupidity" quotation..
    At least you do have a sense of humor Mongo...Keep it coming..
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    1,146

    The largest aquarium in the world here in...

    The largest aquarium in the world here in Atlanta, Jawja' is all sch80 PCV and all welded joints and take-offs. Every joint union welded of course. Noo problems so far.The equipment room is truly a...
  6. First off, do not mistake a motors nameplate data...

    First off, do not mistake a motors nameplate data with anything other than a motors "Rating".
    All motors are required by NEMA to state "Correctly" a motors "Rating" for a given Load(HP)/Applied...
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    My old company went to a large textile mill to...

    My old company went to a large textile mill to completely retube the evaporator on a 1500 ton 19C....
    Technician/mechanic found the chiller with the water drained and both heads down......
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    Some numbers quoted earlier are in error.......

    Some numbers quoted earlier are in error....
    When starting a Wye-Delta motor in the Wye configuration, the motor will pull 133% of Full Load Amps on start.
    The same motor starting in the Delta...
  9. Assuming the ref. is R-22, as long as you...

    Assuming the ref. is R-22, as long as you maintain a maximum of 3PSI(2f) pressure drop in the suction line sizing, and an adequate size liquid line there should be no problem.
    Sadly enough the art...
  10. Replies
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    According to every piping manual I have the...

    According to every piping manual I have the correct suction line pressure drop on a system with R-22 is, as an earlier poster correctly stated is 2f or 3PSI. This insures correct suction velocity...
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    As for unloaded thats usually the day after a...

    As for unloaded thats usually the day after a good vindaloo curry ............ put me another toilet roll on ice Honey please !!!!!!!!!!!!!!!!!!

    I had to Google the "Vindaloo Curry" to see what...
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    So....Ya' wanna' satisfy something with a brass...

    So....Ya' wanna' satisfy something with a brass body & strange dimensions, (6-175-250)
    I would suggest dinner, then a movie, followed by a serious intake of libations at your favorite bar or bistro,...
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    Need some wire.

    I remember the "Good-Ol'-Days" when an Amp was simply the result of putting one volt on a one ohm load...Now with the "Standards" of everything we see, eat, touch & measure being controlled from some...
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    The EPA mandates that the treated cooling tower...

    The EPA mandates that the treated cooling tower water be drained by overflow, cleaning into the sewage drain and never into the storm drains or directly into our eco-system. Only the sewage treatment...
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    I cannot begin to imagine the end result of the...

    I cannot begin to imagine the end result of the glycol, ref., ref. oil and elevated temperatures is going to produce in the long run. I have seen some nasty mixes of a contaminated ref. system from...
  16. A few years back when York changed from the...

    A few years back when York changed from the Danfoss to the lovely Cope's, I replaced a dozen of then on two units with the new Cope's..
    As the factory wanted one of them wiped out so they could peek...
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    Spend some time at your local motor repair...

    Spend some time at your local motor repair company and take a look at some of the motors taken apart for rewind/repair..Many of the end bells of a motor taken apart just crammed with excess grease...
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    As Chillerguy wisely stated, some serious number...

    As Chillerguy wisely stated, some serious number crunching should be done using the printed material available on PFC. Should one install a bank of PFC's with too much K-var capacity some serious...
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    Very simple....It is the mirror opposite of a...

    Very simple....It is the mirror opposite of a superheat calculation.
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    The "Only" thing Wolfdog has been in error about...

    The "Only" thing Wolfdog has been in error about is his chosing a puny 9mm against a full house 45ACP. His statement that there is no such thing as a 3ph. transformer is correct. Just because a 3ph...
  21. Thread: wye-delta

    by RichardL
    Replies
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    2,119

    That sucker gotta' be wired wrong....I would...

    That sucker gotta' be wired wrong....I would guess internally on the terminal board that some wiring got swapped...I mean putting power on term. 1-2 & 3 don't do squat' on a properly wired wye-Delta...
  22. Regardless what make model units you select, I...

    Regardless what make model units you select, I STRONGLY suggest that you have a semi-retired, knowledgeable, and handsome (ME) technician to do the lengthy start-up that should be performed. My fees...
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    I am sadly reminded of an incident here in...

    I am sadly reminded of an incident here in Atlanta, where a "Facilities Crew" installed a jumper on the Low water cut-out on a boiler to "Keep Cost Down" by not calling a service company..
    The sad...
  24. Thread: WHAT IF??

    by RichardL
    Replies
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    2,824

    I remember back when, I installed scores of the...

    I remember back when, I installed scores of the "Ingersol-Rand-Electrostatic-Water-Treater', which used a bypass connection treating 20% of the condenser water with a High DC voltage(10kv) power...
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    [QUOTE=wolfdog;8212751]Hey Richard....don't hear...

    [QUOTE=wolfdog;8212751]Hey Richard....don't hear from you near enough these days.

    Hiya' Wolfie...Being "Officially" retired now but in a "Non-working" advisor like capacity, I cannot pull on...
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