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Yes
there is . And they have
two failure modes, "Open" or "Closed".
"Open" results in no operation,and "Closed" results in a fried armature if a slow enough opening fuse is used. I replaced the panel fuse on mine with a 25 amp snap in automotive circuit breaker.Haven't had a melt down since. RJ On 4/30/2014 6:50 PM, Charlie wrote:
I decided to fix the dead front lift on my I5 last Sunday and spent a few hours with the schematic and a voltmeter. It turns out that the switches, wires and fuse are all good, but the motor (which has nothing visibly wrong with it) doesn't spin at all, in either direction. The schematic shows what looks like a circuit breaker symbol INSIDE the lift motor coming off the common wire. And since my meter shows infinite resistance on both the up and down windings, if there was a popped breaker on the common that'd explain it. Does anybody know if there's really a breaker in there? Any tips for disassembly? The whole thing seems to have been dipped in black plastic, which I guess I'll have to peel off. --Charlie _______________________________________________ Elec-trak mailing list Elec-trak cosmos phy tufts edu https://cosmos.phy.tufts.edu/mailman/listinfo/elec-trak |