I needed to adjust the drive belt on a Whirlpool gas dryer requiring
the front panel to be removed and the door switch wiring to be
disconnected. It took two attempts to get the belt right. After the
first attempt, I replaced the front panel, reconnected the door switch
wiring, plugged it in and tested it. The belt was still misaligned
but there were no electrical problems. On the second attempt, I
plugged the power cord in without reconnecting the door switch
wiring. As soon as I plugged it in the thermostat burned up (sparks,
smoke, the whole enchilada). This all happened without actually
turning anything on. Seems like a longshot but I’m wondering if the
burned thermostat could be related to the disconnected door switch.
Any opinions on the matter? Thanks!
p.s., for those who must know, the belt slipped off the tensioner when
somebody who shall remain nameless turned the drum backwards by hand
from inside the dryer.
p.p.s., the belt is on right now
turning the drum by hand in either direction shouldnty cause a problem
perhaps you need a new belt? and maybe rollers?
the disconnected drum switch may have caused the short taking out the
thermostat or you may have another problem.
My guess is that, with the door switch disconnected, one or more of the
leads were touching the grounded cabinet. Then you plugged it in,
putting 120 volts across the high limit switch which caused it to
On Mon, 28 Feb 2011 04:03:13 -0800, jamesgangnc wrote:
Another thought: the wires to the door switch on our dryer take a long
route around the case at the top, and rely on being plugged into the
switch to keep tension - I suspect that's true with most dryers. Without
them plugged in, even with the ends taped, there's a danger of them
hitting the drum and being damaged (quickly leading to a short as
insulation was torn away)
Thanks everybody for your advice. A coworker checked the thermostat
and it turned out to be okay so the sparks must have been arcing from
the one of the leads (possibly from a short through the cabinet?).
There was sooty residue.on the terminal but the wire itself seemed to
be undamaged. Anyway, I put everything back together and the dryer
runs fine. We'll watch it closely for a while to make sure everything
is running right.
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