This post only after I have climbed under and in my waste water bay.
There is a MAC switch on the dash and a macerator spec sheet in my stack of manuals, BUT I can not find either the pump itself or the discharge valve. According to the literature the pump discharges through a 1" pipe, but I suspect that maybe it really discharges through the 3" main valve. Any Liberty owners that could shed some light? Thanks...Ken & Ellen