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arthur , ontario | the acr3 are quite reliable but not very well sealed against moisture? there is a plastic dam on the bottom of the board? that we drilled a drain hole through?then liberally sprayed the board with krown rust? might also add that every plug on the board was filled with dielectric grease too! and finally coated the sealing surface with lots more grease? we had one board die within a month of install, but after doing all this? it has been 7+ years trouble free since! knock on wood?:)
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