The locking mechanisms for our modular walk in cooler panels are referred to as “cam-locks.” One side of the panel will have at least two male cams (hook), and these connect to an adjacent panel whose edge has the female cams (pin). The male hook is designed to engage the female pin when the 5/16" cam wrench (provided) is turned clockwise. The pivot for the arm is oddly shaped—as the wrench is tightened, the arm will pull inwards, securing a tight panel-to-panel seal.
Occasionally you will find a male fastener with the hook assembly extended and loose. You will be unable to engage the locking mechanism or lock the walk in cooler panels together. All you need to do is re-cock the locking arm. Insert the cam wrench into the cam mechanism and twist the wrench counter-clockwise until you feel resistance. Continue to turn the wrench until you feel the arm bottom out. The hook will now be fully retracted and in position for normal assembly. Your walk in cooler panels should lock together just fine now!
Now I have better understanding with my cooler's locking panel. I just had my walk-in cooler with the help of this buying guide. ;)
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