[DML] Bosch style thermotime switch

[Martin Gutkowski - DMC Ltd <martin@xxxxxxxxxxxxxx>]

Hi All

Just a note on the thermotime switch.

For those who aren't aware, this is the brown sensor that screws into 
the top of the water pump and has a little 2-pin white connector under a 
black boot plugged into it. This sensor is well known for breaking the 
brown casing off the plug. The original sensor was a VDO part but Bosch 
also make one that is much more robust. The general wisdom I was given 
many moons ago is that the plug will still fit. It does, but with one 
problem, which has had me scratching my head for several days recently 
and just goes to show how when you're trained to do something, you're 
also trained to make assumptions....!

The thermotime switch must not be plugged in backwards, and if using a 
bosch type switch, it is quite easy to do this. I assumed it didn't 
matter which way it was plugged in (it's just a switch, right!?). The 
result if backwards will be very hard starting from cold, though 
curiously not a short circuit as the manual suggests

Best Wishes

Martin








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