Search:

Type: Posts; User: raptyr

Page 1 of 5 1 2 3 4

Search: Search took 0.02 seconds.

  1. Replies
    13
    Views
    963

    The main reason Poodle is the equipment used to...

    The main reason Poodle is the equipment used to do the machining of the rotors, tighter tolerances = quieter machine but can also cost $$$$$$ extra, and if you have just spent several millions on...
  2. Replies
    20
    Views
    1,131

    cost and efficiency are improved without the...

    cost and efficiency are improved without the check valve but reliability isn't , effect on efficiency in not much in my opinion , 1% but that can be a lot if you are a marketing or sales person...
  3. Replies
    20
    Views
    1,131

    The initial minimum speed was 50hz and although...

    The initial minimum speed was 50hz and although thereafter the compressor does ramp down to 0hz in an electronically soft stop way, but this is not really a mechanical or refrigerant related soft...
  4. Replies
    20
    Views
    1,131

    They did not fit based on cost and effect on...

    They did not fit based on cost and effect on efficiency but that’s about 0.5% and it’s no good having an efficient broken compressor due to debris from the oil separator


    Sent from my iPhone...
  5. Replies
    20
    Views
    1,131

    The problem for the compressor with backspin is...

    The problem for the compressor with backspin is that it can wash metallic and copper debris from the oil separator back into the rotors and lock up the compressor, you can fit a standard Danfoss...
  6. Replies
    20
    Views
    8,368

    Check your condenser water temperatures ...

    Check your condenser water temperatures


    Sent from my iPhone using Tapatalk
  7. Replies
    2
    Views
    463

    Hope this helps Regards808381 808382

    Hope this helps
    Regards808381
    808382
  8. Replies
    20
    Views
    8,368

    If this shaft is moving in both directions then...

    If this shaft is moving in both directions then you know the slide valve is moving in both a load and unload direction, but why would the amps increase and current limit or trip if you are unloading?...
  9. I would open up all valves before powering up, do...

    I would open up all valves before powering up, do you have a suction actuator valve too ? Make sure it opens because they can stick if stored or standing for a long time, you may have to remove the...
  10. Replies
    20
    Views
    1,131

    Can you explain why the reverse rotation when...

    Can you explain why the reverse rotation when slowing down is not good for the compressor ?
  11. Replies
    20
    Views
    8,368

    Is the FLA increasing due to increased head...

    Is the FLA increasing due to increased head pressure or due to slide movement, you can see if the slide is moving by watching the control shaft connected to the pot


    Sent from my iPhone using...
  12. Replies
    20
    Views
    1,131

    You can purchase a suction check valve from Frick...

    You can purchase a suction check valve from Frick that fits those compressors or you can fit a standard Danfoss NRV in the discharge line between the oil separator outlet and condenser inlet , that...
  13. You only need power on for about an hour before...

    You only need power on for about an hour before running, the heater in the compressor just warms the body directly to keep and liquid refrigerant out , there is no oil heater



    Sent from my...
  14. Replace the aluminium hx with a copper tube and...

    Replace the aluminium hx with a copper tube and fin type it is the reaction with the aluminium that causes the problem


    Sent from my iPhone using Tapatalk
  15. Replies
    36
    Views
    7,806

    The YR chillers are notorious for oil loss,...

    The YR chillers are notorious for oil loss, especially if you are running low condensing temperatures, if the Chilled Water Leaving setpoint is 7C then i would ensure you are running at least 22C...
  16. Replies
    4
    Views
    578

    Switch the chiller off and the fault will go away...

    Switch the chiller off and the fault will go away


    Sent from my iPhone using Tapatalk
  17. Thread: YMC2-S1055AAS

    by raptyr
    Replies
    4
    Views
    321

    Are any of the main fuses blown ? Normally with...

    Are any of the main fuses blown ? Normally with Input DCCT's faults we swap around the plugs on the DCCT's to see if the fault moves with the plug or stays with the DCCT, usually that indicates that...
  18. Replies
    19
    Views
    1,694

    You should replace the harnesses too between the...

    You should replace the harnesses too between the gate driver board and the VSD Logic Board, especially if the fault is intermittant
  19. Replies
    19
    Views
    1,694

    Did you replace the harness at the same time as...

    Did you replace the harness at the same time as you replaced the board ?


    Sent from my iPhone using Tapatalk
  20. Replies
    28
    Views
    1,492

    I think you may find with vets that due to the...

    I think you may find with vets that due to the lack of internet and mobile phones they had to try and figure it out for themselves or RTFM or , god forbid humiliate themselves by asking their manager...
  21. Replies
    25
    Views
    1,235

    Well there are “demand “ limits , they are...

    Well there are “demand “ limits , they are typically set just above the optimum sweet spot for your specific site selection , that’s when you want another chiller to kick in and balance load across 2...
  22. Replies
    25
    Views
    1,235

    Then there is “Pull Down “ limit too [emoji4] ...

    Then there is “Pull Down “ limit too [emoji4]


    Sent from my iPhone using Tapatalk
  23. Thread: YVWA Inhibitor

    by raptyr
    Replies
    9
    Views
    803

    It's light blue now, changed again :-)

    It's light blue now, changed again :-)
  24. Or as we call it 'small temperature difference' I...

    Or as we call it 'small temperature difference' I really don't know which boffin came up with that when we all use 'Approach' LOL
  25. Thread: YORK YT

    by raptyr
    Replies
    8
    Views
    754

    well I figured from my iphone that if he got this...

    well I figured from my iphone that if he got this far then he pretty much knows what he's doing so i didn't want to go into great detail , especially if he came back asking where the coupling is? LOL
  26. Thread: YORK YT

    by raptyr
    Replies
    8
    Views
    754

    Just open the covers on the D flange, drop the...

    Just open the covers on the D flange, drop the coupling spacer out after marking it’s position and ensure you put it back with the same bolts in the same holes and same spacer position, take the...
  27. Replies
    7
    Views
    1,114

    They use the pump power required to push the...

    They use the pump power required to push the required amount of water through the evaporator and condenser , if air-cooled then it would be the fan power ,
  28. Replies
    7
    Views
    1,114

    You do have to include pumps in Europe for...

    You do have to include pumps in Europe for Eurovent certification


    Sent from my iPhone using Tapatalk
  29. Replies
    5
    Views
    831

    The eductor is not likely to be clogged , you can...

    The eductor is not likely to be clogged , you can raise the alarm temp and time , that may resolve the issue


    Sent from my iPhone using Tapatalk
  30. Replies
    5
    Views
    831

    You are on the right lines as far as swapping...

    You are on the right lines as far as swapping harnesses and gate drivers, make sure you have some thermal paste, first though i would just check all the pins in the plugs as an intermittant gate...
  31. Replies
    59
    Views
    4,899

    Just a couple of other points, I noticed on the...

    Just a couple of other points, I noticed on the Evaporator Screen you have the 50% setting for the vanes, this is normally set to 100% , the 50% setting slows down the response of the vanes by half....
  32. This may help, it was a common problem, you...

    This may help, it was a common problem, you should also check compressors mountings are ok and that the AVM's (anti-vibration mounts ) under the chiller are all set correctly and that those avm...
  33. Thread: Smart probes?

    by raptyr
    Replies
    19
    Views
    1,756

    I have found the testo probes quite handy when...

    I have found the testo probes quite handy when doing quick checks, but all my work is on chillers so they are usually only a few feet away from my Ipad, but longer more detailed testing i use Pico...
  34. Replies
    44
    Views
    8,594

    Rotate the gate driver boards and ensure you have...

    Rotate the gate driver boards and ensure you have everything plugged in that should be, keeps the doors closed during testing, see how fast the DC buss rises on pre-charge.
  35. Replies
    7
    Views
    456

    An idea of what the Optiview is reporting on the...

    An idea of what the Optiview is reporting on the fault history would help
  36. They don't run for long if they vibrate and you...

    They don't run for long if they vibrate and you would need historical footprints from commissioning and annually to date to do a good assessment, otherwise you are looking at a snapshot
  37. Replies
    19
    Views
    1,694

    Well the fault hasn't fixed itself, you will have...

    Well the fault hasn't fixed itself, you will have to replace the IGBT, I would also routinely recommend changing the harness too.
  38. Replies
    19
    Views
    1,694

    It could be temperature related or it could be...

    It could be temperature related or it could be the specific vibrations from compressors running at certain frequencies (also load and ambient related of course) that cause the problem, if the IGBT's...
  39. Replies
    19
    Views
    1,694

    Vibrations, tracks and sandwich boards

    Vibrations, tracks and sandwich boards
  40. Replies
    59
    Views
    4,899

    It has only been running 4 minutes so it’s likely...

    It has only been running 4 minutes so it’s likely that the water temperature hasn’t stabilized yet so the bad won’t slow down and open the vanes until it is inside the stability envelope
  41. Replies
    59
    Views
    4,899

    If the diode check works out on the remaining...

    If the diode check works out on the remaining diodes, and is everything ok on the DC Buss, caps ok, OUTPUT IGBT's ok ? Then I would be tempted to put small fuses on the input, maybe 100amp, turn...
  42. Replies
    120
    Views
    13,910

    It's not just about the meters, the most...

    It's not just about the meters, the most important tool is in your head, that needs protecting more than the tool in your hand. My first real troubleshooting battle with a high end meter was with a...
  43. Replies
    120
    Views
    13,910

    https://www.youtube.com/watch?v=OEoazQ1zuUM The...

    https://www.youtube.com/watch?v=OEoazQ1zuUM
    The part about CE rating is interesting , but this is why i use Fluke
  44. I would agree with Chops, either your pump is no...

    I would agree with Chops, either your pump is no good, you have a leak or your vacuum gauge is no good. Does the electricity get thinner too as you go higher ?LOL
  45. Replies
    120
    Views
    13,910

    I was nearly killed twice using 'other meters'...

    I was nearly killed twice using 'other meters' first time was checking some fuses on ohms while the guy stood and watched, fuses checked out ok so i switched his meter to volts to check 3 phase, all...
  46. Replies
    120
    Views
    13,910

    I have had a lot of meters over the years, hand...

    I have had a lot of meters over the years, hand me downs, but when i finally got the chance to choose my own stuff and the company paid, then i went to Fluke, 2 x 289's, 1 x fluke 435, 1 x fluke 345,...
  47. Replies
    19
    Views
    1,694

    RS Components have them

    RS Components have them
  48. Thread: York YZ Chiller

    by raptyr
    Replies
    14
    Views
    1,619

    Bear in mind we are running 400/50/3 but dc buss...

    Bear in mind we are running 400/50/3 but dc buss 550vdc and start frequency around 40hz but that can be modified to suit on site
  49. Replies
    19
    Views
    1,694

    here they are on page 7

    here they are on page 7
  50. Replies
    58
    Views
    1,547

    so they can earn money and send it home to their...

    so they can earn money and send it home to their families, maybe earn is not correct in all cases, aquire wealth they can then transfer home
Results 1 to 50 of 218
Page 1 of 5 1 2 3 4