replying to The Medway Handyman, Wingnuts wrote:
Hi, I have a Henry NVR200 which is over heating.

I've stripped it down and cleaned it as best I can.. The brushed have about
15mm left on them and the fans underneath the motor were pretty clean but I
soaked them in warm soapy water nonetheless and then used a bottle brush to
get in-between them. I then attached a drill to the nut and ensuring the
correct direction I spun it up to dry out any moisture that remained, if any.

The lack of obvious fluff and dirt and that it was pretty clean in the first
place bothered me; I was expecting something more significant to explain the
tripping of the thermal cut-out. I cleaned everything and re-assembled Henry.

There was a noticeable improvement in the suction and the motor didn't trip
out...... until just now.

So, before I strip it down again, could the thermal cut-out be faulty? I'm
guessing it's unlikely as Henry runs for a short time before it cuts out, then
it starts up again. I'm guessing this is due to the thermal cut-out cooling
slightly etc etc.

Does anyone have any advise on troubleshooting the actual cause or a process
of elimination I should follow?

I know this post is over 10 years old, but I have faith in you lot

Thanks in advance,

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