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Thread: Cask SAMS; 1 won't foam

  1. #1
    Join Date
    Nov 2002
    Location
    Estacada, OR.
    Posts
    33

    Cask SAMS; 1 won't foam

    Our Cask SAMS system is 5 years old. Many problems, but have always managed to persevere. This one has us baffled. We can't seem to get position 2 to foam so we have some headspace in the can. We manipulate foam in 1 and 3 just fine. #2 also is filling slower than the others. We have replaced springs inside the filler assemblies. and beer lines to the machine. We chopped the lines shorter. We replaced both coils (fill and foam). I have disassembled each one of these filler assemblies trying to find a reason, nothing.

    Please help us ObiWan,

    SKåL!

    Ken Johnson
    Fearless Brewing Company

  2. #2
    Join Date
    Nov 2009
    Location
    Moab, Utah
    Posts
    527

    Diag. Procedures

    Quote Originally Posted by fearless1 View Post
    Our Cask SAMS system is 5 years old. Many problems, but have always managed to persevere. This one has us baffled. We can't seem to get position 2 to foam so we have some headspace in the can. We manipulate foam in 1 and 3 just fine. #2 also is filling slower than the others. We have replaced springs inside the filler assemblies. and beer lines to the machine. We chopped the lines shorter. We replaced both coils (fill and foam). I have disassembled each one of these filler assemblies trying to find a reason, nothing.

    Please help us ObiWan,

    SKåL!

    Ken Johnson
    Fearless Brewing Company
    Assuming the SAMS filler head is similar Tech to the ACS, you need to be sure both coils are actually lighting off when they are supposed to by checking DC Volts at the coil terminal junction and DC Amps when the coil is energized. Again, if the Tech is setup like ACS, you will have a relay in the control panel that is energized to switch power to each solenoid coil. Those relays are subject to high failure rates, especially when the coils have been shorted formerly. The TC connection for the beer line inlets can be subject to some strange behavior depending on how it is oriented and clocked. When you cycle the coils on that head in question from the HMI, you should be reading voltage, then AMPS, and checking that the relay is lighting off in the control panel. Its usually the contacts in those relays that fail, and generally stuck closed in our case, but you could have an open coil. If the coils are energizing and they are sound, the mechanical should be responding accordingly. These things have to be verified stepwise as a starting point. The same size coils should have similar AMP draw across the unit. The coil housing should not be abnormally hot to the touch. Look for consistency in readings across the filler head.
    Last edited by Starcat; 04-17-2019 at 11:22 AM.
    Warren Turner
    Industrial Engineering Technician
    HVACR-Electrical Systems Specialist
    Moab Brewery
    " No Cell Phone Zone."

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