Need help regarding Beacon Medaes dryer issue.

  • Tuesday, August 02, 2022 1:51 PM
    Message # 12870899

    Hi all,


    I was hoping to reach out to see if some of you had suggestions regarding an ongoing issue.


    Customer has issue with a desiccant dryer for a quad 15HP med air system. (circa 2000) I have tried repeatedly to repair. 


    Problem: One dryer will purge for a while and then stop purging, (seemingly being stuck during a cycle). Only by closing inlet valve on dryer will switching valve start working again (pressure drops to about 60 psi, after which dryer cycles towers).


    I have repeatedly changed switching valve out (2 brand new units and also tried older parts I knew to be working).

    I have replaced check valves and also tested new check valves to make sure they are working properly.

    I have tried a different power cord connected directly to 110V power to take the controls out of the equation. No change.

    I have inspected the towers themselves and found nothing out of the ordinary.

    I have contacted Beacon tech support who spent a lot of time helping me go through this but eventually had no other advice.

    I have contacted manufacturer of switching valve. They could not offer suggestions as to why it does not work.

    I have inspected the aluminum mounting block. Minor corrosion on mounting face was cleaned using Scotch Brite. Some improvement was noted. (Still happens, but less-frequently).


    These dryers are not that complicated and I have never had this kind of an issue with one. Do any of you have any suggestions or have you run across this before???


    Thanks in advance,


    Bob






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