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Type: Posts; User: DavidWRosario

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  1. Replies
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    i would look to see what the data plates on the...

    i would look to see what the data plates on the equipment your working on calls for weight of refrigerant. that gives you a starting point. add 404a in liquid state using a scale to see how much...
  2. Heavy ice on supermarket suction line at header

    Working on a 404a low temp rack. Two loops, this loop has heavy ice at the suction header. The on units on this loop are two howe ice machines, flakers, one a 2000 lb and the other a 1000 lb, and a...
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    Hussman cases, eprs and superheat

    Have been working on sm's since August 2013, before that mostly self contained equipment for over 20 yrs. Have noticed Hussman tech support asking for 5 degrees of superheat on thier equipment...
  4. I heard this one has a eye, not sure how it works...

    I heard this one has a eye, not sure how it works

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  5. Liquid level sensor on rack receiver

    Was working on a rack the other day with a leak. Found and repaired the leak, however, the liquid level read on the E2 39%, there was no offset in the program, after repair and addition of 388 lbs...
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    So it seems annual oil test at a bare minimum,...

    So it seems annual oil test at a bare minimum, once every six months preferred ?

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    Also how often do you change the oil ? Sent...

    Also how often do you change the oil ?

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    We change contactors on a regular bases, are you...

    We change contactors on a regular bases, are you looking for a sticking contactor or maybe a wiring issue feeding the oil switch. I will check both, but good lead..thanks

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    Thanks Sent from my SCH-I605 using Tapatalk

    Thanks

    Sent from my SCH-I605 using Tapatalk
  10. Replies
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    595

    Hmm, your suggesting high operating temps or just...

    Hmm, your suggesting high operating temps or just a bad iol ?

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  11. Replies
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    Thanks, I'll check Sent from my SCH-I605 using...

    Thanks, I'll check

    Sent from my SCH-I605 using Tapatalk
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    Nuisance oil failures

    Am working with Hussman racks and about once a month one rack gets a compressor alarm with a oil failure. When you get there, there is oil in the sight glass, one or two balls floating in the...
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    Rack refrigerant oil

    Was wondering what is the recommended pm interval for oil testing and filter changes on racks ?

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  14. I do small grocery stores, using e2 einstein s,...

    I do small grocery stores, using e2 einstein s, on the screen there is a actual discharge and a set point in brackets, does this bracketed number what you are trying to get the a8/a9 to maintain ?
    ...
  15. I thought stacking was a bad thing, I appreciate...

    I thought stacking was a bad thing, I appreciate the info. So its more of a controlled stacking. Awesome

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  16. Interesting, during this time are you running a...

    Interesting, during this time are you running a split condensor while all this is going on ?

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  17. So stacking maintains refrigerant to maintain...

    So stacking maintains refrigerant to maintain head pressure ? I thought fan cycling did that

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  18. Grocery store refrigeration..stacking refrigerant ?

    Have been working in Sm refrigeration for 7 months. This winter, I have had dealings with receivers at 0 level, return piping from rooftop condensor ice cold, sight glass bubbling, rack not cooling...
  19. Livin the dream : :-) Sent from my SCH-I605...

    Livin the dream : :-)

    Sent from my SCH-I605 using Tapatalk
  20. Replies
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    which ic machines do you work on, my guess is the...

    which ic machines do you work on, my guess is the brands are different but the machines are probably similar, like ice machine and coolers. different name tags, same concepts, different boards and...
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    Hadnt given to much thought to self employment, i...

    Hadnt given to much thought to self employment, i am a service tech, i think running a business might be a different kind of animal. that was probably a long winded answer for a service...
  22. Good morning, Been in RHvac for about 24...

    Good morning,

    Been in RHvac for about 24 years, I have done Commerical hvac, my refrigeration background has been walk ins, ice machines, reaching. I have a NC Refrigeration License and Universal...
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    Time for a Change

    Been doing Commerical Refrigeration and HVAC for almost 25 years. Am the NC Refrigeration License holder for my company. My company sent me to a Electro freeze class last year, then decided not to...
  24. been around reading only, finally gonna get active

    have a friend on the boards always talking about the group. been in the trade almost 25 years wanna be part of this
  25. Replies
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    if your Outdoor temp is 20. the heat coming from...

    if your Outdoor temp is 20. the heat coming from the heat pump is going to be very low. With the winters you have in NJ you will need to be on aux heat or em heat when the temp gets down. Heat pump...
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