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Type: Posts; User: Entropie

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  1. Replies
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    If the motor is rated 575VAC @ 60Hz, the drive...

    If the motor is rated 575VAC @ 60Hz, the drive should provide 575VAC @ 60Hz. Usually a motor accepts a +/- 10% variation in input voltage which would be 632VAC. You measured 650VAC. If you apply...
  2. VFD compressor has benefits but disadvantages as...

    VFD compressor has benefits but disadvantages as well. Here a few:

    + superior water temperature control
    + increased part load efficiency
    + soft start
    + reduced compressor cycling
    + reduced...
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    1,102

    Has anyone got the service manual for the LSC...

    Has anyone got the service manual for the LSC screw. The Hartford internet page doesnīt issue that.
  4. Replies
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    1,758

    The valve is physically the same, but might be...

    The valve is physically the same, but might be different from size. The control algorithm in the control is the same except of the low suction superheat action.
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    Itīs all about the NEMA rating of the panel:bump:

    Itīs all about the NEMA rating of the panel:bump:
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    The software version is ok. There are no issues...

    The software version is ok. There are no issues with the electronic expansion valve control. I suspect that the issue is when the compressor unloads to start the lag system. The degree of opening of...
  7. Replies
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    The type of chiller you mentioned...

    The type of chiller you mentioned (YCAS0140EC17YGADBC) does indicate to me that it is a style G chiller. Form 201.18-nm1 does refer to style F chillers. They are basically quite the same but your...
  8. Replies
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    Do you have the manual for the chiller? It is...

    Do you have the manual for the chiller? It is form 201.19-nm1. It is quite good, a lot of information about almost everything of the chiller.
  9. Replies
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    4,762

    It sounds to me that your YCAS has electronic...

    It sounds to me that your YCAS has electronic expansion valves? Does the chiller has suction line HTX installed? What refrigerant R22 or R407C? Do you know the software version of the EPROM?
  10. The following qoutation is from the...

    The following qoutation is from the article:"Undercover agents posing as members of an al Qaeda sleeper cell met with Smadi several times while the terrorist suspect hatched his plot to commit jihad,...
  11. Replies
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    4,762

    The solenoid valve on the compressor is a 3-way...

    The solenoid valve on the compressor is a 3-way pressure regulating valve. It does control the oil pressure applied to the slide valve in accordance to the current running (voltage applied to the...
  12. Replies
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    4,762

    You should check compressor #2 for proper slide...

    You should check compressor #2 for proper slide valve operation. The amount of starts to hours is an indication for a slide valve problem (slide valve stuck in high position, broken sv spring, lip...
  13. Replies
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    37,912

    The motor protection / CT module can be reseted...

    The motor protection / CT module can be reseted by removeing itīs 24V power supply. Therefore you have to check always if the mp module shows a fault code. If yes, the internal contact is open, this...
  14. Replies
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    4,590

    There is no connection between the coolant and...

    There is no connection between the coolant and the electrical power! The reason why deinonized water is used, is corrosion. But you should never use anything else in the system then the original...
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    I am really tired of reading silly complaints...

    I am really tired of reading silly complaints about Obama......It is not good if you do not stand behind your president, this encourages others to gain an advantage over America. Therefore, general...
  16. Replies
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    What about to fit a much smaller 3 phase motor...

    What about to fit a much smaller 3 phase motor (e.g. 3hp) to the output of the SSS instead of the compressor motor? Then starting and take measurements until the chiller trips on something else (low...
  17. Replies
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    I suspect that they are quite expensive, even the...

    I suspect that they are quite expensive, even the single SCR`s! It isnīt easy to test them, because you canīt test them under load. If you have access to a FLUKE 434 power analyzer you could probably...
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    It will have almost no affect on the starting...

    It will have almost no affect on the starting amps with or without compressor coupled, because the starting current is mainly caused by the breakaway torque on the rotor itself. The problem could be...
  19. If there are just a few days where you have...

    If there are just a few days where you have design ambient conditions you could consider to choose a smaller system (lower installation / equipment and operation costs) with an additional electrical...
  20. Thread: Reincarnation

    by Entropie
    Replies
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    4,347

    Scientificly itīs totally clear! Energy cannot...

    Scientificly itīs totally clear! Energy cannot disapear, only change itīs state. We are energy, hence we cannot disapear but we transform into something new. Probably a lot of the atoms and molecules...
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    worldīs most known rogues

    Who is worth to be listed?
  22. Thread: Water temp

    by Entropie
    Replies
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    9,848

    Sorry, but this does not allign with the facts i...

    Sorry, but this does not allign with the facts i know about HVAC! Your cooling loop is undersized or the heat transfer / conduction in the ground is less then calculated! If the ground loop canīt...
  23. Thread: Water temp

    by Entropie
    Replies
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    9,848

    As mentioned previously, the cooling/heating...

    As mentioned previously, the cooling/heating capacity of your system depends on the evaporating and condensing temperatures. Higher condensing temperatures cause efficiency and capacity losses. Bring...
  24. How many hrs in the year will be at design...

    How many hrs in the year will be at design conditions (maximum heat/cooling load)? The less it is it the more it makes sense to go for a two stage ac/hp and an additional electrical heater. Have you...
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    I did send you already a pn. So it seems to be...

    I did send you already a pn. So it seems to be enabled.......
  26. Replies
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    Enable your private messageing, i will pass you...

    Enable your private messageing, i will pass you the information...
  27. Replies
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    It is possible but you need some experience with...

    It is possible but you need some experience with York products. The letters prior to the serial number do indicate the place and date of manufacturing of the chiller. So letīs start and post a few of...
  28. Replies
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    The EEV on the YCAL is basically a thermostatic...

    The EEV on the YCAL is basically a thermostatic expansion valve with a heater at the bulb. The heater is fired with a 24V PWM signal to maintain the suction superheat setpoint. One end of the bulb is...
  29. Before the new coil has been installed you had...

    Before the new coil has been installed you had no problems, with the new coil you have. It is likely that there is a relationship. But sometimes it is difficult to reveal all problems on the first...
  30. Replies
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    They are not mandatory but good for quick...

    They are not mandatory but good for quick reference / trouble shooting on a system. HVAC experts do not really need em:D
  31. Thread: Water temp

    by Entropie
    Replies
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    9,848

    The differences in water inlet to water outlet do...

    The differences in water inlet to water outlet do indicate that the flow rate is right. The temperature level is to high, you should ask what the original design temperatures where. This does...
  32. Replies
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    I agree, replacement jobs with already installed...

    I agree, replacement jobs with already installed ductwork are far more difficult. Maby a two stage unit with a vsd fan can increase comfort/efficiency under off design conditions....But there will be...
  33. Replies
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    I assume that not many customers will complain...

    I assume that not many customers will complain about a rule by thumb choosen unit because they are probably larger then needed. And a lot of customers perhaps even donīt know how "good" a proper...
  34. Replies
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    I perform chargeing only in accordance to liquid...

    I perform chargeing only in accordance to liquid subcooling and suction superheat on DX systems, and the evaporator/condenser approach on flooded systems.
  35. What do you mean with low capacity? 0.5 tons, 5...

    What do you mean with low capacity? 0.5 tons, 5 tons or 500 tons? Which refrigerant, application? Ammonia, CFC, HFC? Which evaporating, condensing temperature?
  36. Replies
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    This is only true in case of a motor burn out!...

    This is only true in case of a motor burn out! But two smaller compressors are better then one large under part load conditions (better efficiency). Full load conditions are only in 3% of the total...
  37. Thread: York D3CG

    by Entropie
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    2,219

    As FLA says (Full Load Amps)........when the...

    As FLA says (Full Load Amps)........when the motor is not fully loaded it does draw less current then the FLA. On a fan motor this can be achieved by pumping less air through the impeller. It is...
  38. Thread: Water temp

    by Entropie
    Replies
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    9,848

    I donīt believe in any way that it takes 7 days...

    I donīt believe in any way that it takes 7 days for the temperature in the drilling hole to equalize! The average temperature in earth is about 50°F within the dept you mentioned. Have you seen the...
  39. Replies
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    A proper installed shaft seal (with oil on the...

    A proper installed shaft seal (with oil on the mating surfaces) does withstand the vacuum that has been mentioned. Donīt forget to check the shaft seal oil pressure and adjust if neccessary when you...
  40. Replies
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    37,912

    At the time the starting command has been...

    At the time the starting command has been released by the controller the current monitoring starts. If there is no current read by the three phase module for 3 seconds, the chiller trips on the...
  41. You should adopt the metric system! The Britains...

    You should adopt the metric system! The Britains did it and even the NASA turned to it. So power is in Watt, which by the way makes sense.:D
  42. Replies
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    I would appreciate that! We in Germany...

    I would appreciate that! We in Germany experiencing actually exactly the same as you in the US. Our export industries dropped by 30% within one year! We broke a 40 years old record of unemployed...
  43. Replies
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    This wouldnīt help......our asses have been...

    This wouldnīt help......our asses have been already sold for Russian gas.......:D
  44. Replies
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    You shouldnīt fear Obama because almost half of...

    You shouldnīt fear Obama because almost half of your country has already been sold to Mao and the Sonyland connection.........:D

    http://en.wikipedia.org/wiki/United_States_public_debt
  45. Replies
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    2,188

    I like them, they are a different from the...

    I like them, they are a different from the ordinary equimpment. The single stages in hot water application (waste heat from processes) are quite popular here. Steam as well but we have almost no...
  46. Replies
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    1,391

    I would recommend you to send it back to Danfoss...

    I would recommend you to send it back to Danfoss for investigation. Have you done all the recommended (short/shielded power wiring to motor, output filter), dedicated set up of the motor parameters)...
  47. Replies
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    I did assume that all refrigerant has already...

    I did assume that all refrigerant has already been transferred on a dilution cycle and the chiller is off for a longer period (winter time) with the steam valve leaking. Steam control valves are not...
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    I consider George W. Bush to be the worst...

    I consider George W. Bush to be the worst president ever (and probably for all times as well, but this is my opinion as a European)...........:D. So basically the good news are it canīt become worse!
  49. Replies
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    TXV?, EXV?, capillary tube?, liquid receiver?...

    TXV?, EXV?, capillary tube?, liquid receiver? Whatīs the unit like?
  50. Replies
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    Agree, if you are a absorber specialist (like you...

    Agree, if you are a absorber specialist (like you :D) but difficult for others. If it completely crystalized it will need to have deionized water to add to make it work again. Am i right?
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