Results 1 to 8 of 8
  1. Username Protected
    Member

    Posts
    26 Posts
    Thanked 18 times
    Phenom Instructor/Mentor
    Join Date
    Joined Nov 2020
       #1  

    VCS/GCF refuse to open when it is hot outside!

    I had this issue when I flew 100s for JetSuite many years ago.
    The one l fly exclusively now is #30 and has the same issue.
    When you really need A/C (hot Wx) the VCS valve will not open, allowing GCF to run, cooling the aircraft.
    EMB’s fix is to slightly reduce the pressure in the coolant tank by letting some of it out!
    Anyone else had to put up with a 48C cockpit and 53C in the cabin?
  2. Username Protected
    Member

    Posts
    18 Posts
    Thanked 6 times
    Phenom 300 Owner & Pilot
    Join Date
    Joined Sep 2021
    #2  
    Are you seeing VCS Overpressure faults in your CMC? If so, Embraer is right to recommend reducing the pressure. When the VCS is serviced, it helps to have it serviced on a hot day and have the techs fill it to the low limit of pressure.
  3. Username Protected
    Member

    Posts
    26 Posts
    Thanked 18 times
    Phenom Instructor/Mentor
    Join Date
    Joined Nov 2020
       #3  
    No (Username Protected), no codes observed. Lowering the quantity is not in the Mx Manual, therefore cannot be legally used to clear the write up.
    Although your suggestion when servicing makes sense!
  4. Username Protected
    Member

    Posts
    12 Posts
    Thanked 7 times
    Phenom Instructor/Mentor
    Join Date
    Joined Nov 2020
    #4  
    (Username Protected),

    I have 1,000 hours in SN 30. We should download sometime. I really miss sn 30.

    I'm about to TO. Please drop me a text some time at 480.307.7097.

    Thanks,
    (Username Protected)
  5. Username Protected
    Frequent Poster

    Posts
    102 Posts
    Thanked 123 times
    Phenom Instructor/Mentor
    Join Date
    Joined Oct 2020
    #5  
    FOL PHE500-001/17 contains the following verbiage:

    "As a preventive action, whenever frequent operations of the aircraft at
    ground external temperatures greater than 40°C (104°F) are
    estimated, it is recommended that the maintenance personnel reduce
    the VCS refrigerant charge to 1.5 kg (3.3 pounds) in accor(Username Protected)ce with
    AMM task 12-17-00-610-804-A, which should be enough to prevent
    the system from reaching the high-pressure cutout level."

    I haven't looked at the task referenced, but I don't imagine the FOL is in error.
  6. Username Protected
    Member

    Posts
    26 Posts
    Thanked 18 times
    Phenom Instructor/Mentor
    Join Date
    Joined Nov 2020
       #6  
    Thank you for your response, (Username Protected)!
    I remember the Techs in Masa, AZ offering this fix a few years ago.
    Not sure if this was done to ours?
  7. Username Protected
    Member

    Posts
    20 Posts
    Thanked 3 times
    Phenom Pro Pilot
    Join Date
    Joined Aug 2021
    #7  
    (Username Protected), as (Username Protected) says, juts follow the FOL. Most of the time it will get fixed with that. I also was with the same problem during the last couple of weeks (VCS not working with temperatures under 33 celsius, so strictly, FOL didn’t applied but I did it anyway) it was only fixed just after doing a reset, then we did some FIM’s recommended by Embraer and everything looked good, finally we added some freon (because it was a bit low) and until now, is working fine.
  8. Username Protected
    Member

    Posts
    26 Posts
    Thanked 18 times
    Phenom Instructor/Mentor
    Join Date
    Joined Nov 2020
       #8  
    Thank you, lgnacio!

Posting Permissions