Need a proof of fire switch.

[magentaman]

Need to replace the proof of fire switch on my Winslow PS40. Part number H5887. Found a couple places that sell it but was wondering if there was an option like at Grainger? Suggestions?

 

[SmokeyTheBear]

Need to replace the proof of fire switch on my Winslow PS40. Part number H5887. Found a couple places that sell it but was wondering if there was an option like at Grainger? Suggestions?

If you get the numbers off of the part and have the measurements for the depth and size of the place it fits into you can use Grainger's search function, they carry a lot of limit switches.

 

[Heater Helper]

Most units don't use snap/ limit switches but use thermistors which send a resistance reading to the circuit board. I'd advise ou to use the proper part.

 

[SmokeyTheBear]

Most units don't use snap/ limit switches but use thermistors which send a resistance reading to the circuit board. I'd advise ou to use the proper part.

According to the manual for the PS40 it uses a 140°F close on rise snap disc to provide proof of fire and a 120°F close on rise snap disc to turn on the convection blower.

 

[Heater Helper]

I stand corrected. Should be easy to find a replacement if you use find out the on/ off range of the switch. It should be marked on the side of the switch. It should say 140-20 0r something like that right on the switch. Meaning it closes at 140... opens at 120

 

[magentaman]

According to the manual for the PS40 it uses a 140°F close on rise snap disc to provide proof of fire and a 120°F close on rise snap disc to turn on the convection blower.

I was under that same assumption, except now I have the temp!

 

[SmokeyTheBear]

H5887 http://www.google.com/url?sa=t&rct=...zeH2DQ&usg=AFQjCNGmLlVEYZHHfNj8dlAOw5S2qzj4mA


That looks like a common garden variety ceramic pof to me.