chrisf
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| posted on 12/2/05 at 12:42 AM |
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Fan Switch
Does the fan switch require a relay or can it be wired directly to the fan??
If it can be directly wired to the fan, does the bypass switch require a relay??
--Chris
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Ben_Copeland
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| posted on 12/2/05 at 08:51 AM |
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It was discussed in depth not long ago.. basically put a Relay to be safe, especially if your fitting a bypass switch
Ben
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chrisf
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| posted on 12/2/05 at 03:00 PM |
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Thanks Ben; will do.
--Chris
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tomm
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| posted on 21/2/05 at 05:48 AM |
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I'm great with the spanner, but US with the wires can anyone send me a wiring diagram for a electric with or without an overide switch -
Pleease
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bob
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| posted on 21/2/05 at 01:51 PM |
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does this help
 
Rescued attachment Free Notes.jpg
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indykid
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| posted on 21/2/05 at 02:37 PM |
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or try this if you arent sure the fan switch(thermo) can take switching the power.
by making all the switches switched earths, if there is a short at the switch, or something rubs through the fan wiring, it will power the fan rather
than burning out the loom. probably, i think
tom
 
Rescued attachment small.jpg
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Hellfire
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| posted on 21/2/05 at 02:58 PM |
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Nice drawing Indykid... obvious Autodesk user
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indykid
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| posted on 21/2/05 at 05:39 PM |
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pen, paper, camera.
did'nt even scan it.
sod this techy malarkey
tom
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clbarclay
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| posted on 21/2/05 at 05:41 PM |
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Are thermo switches output on/off (digital) or are they like senders for water temp guage and give an variable resistance output (analogue).
If the latter, then a relay is necissery, the fan won't operate properly and will most likely ruin the electric motor. Electric fan motors, like
most motor are designed to work at constant speed with an un restricted input.
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tomm
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| posted on 26/2/05 at 12:43 AM |
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thanks for the diagrams guys roblem solved - Awesome!
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tomm
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| posted on 26/2/05 at 03:51 PM |
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just had a thought, does the diagram given mean that all the power used byt he fan goes through the thermo switch?? is the thermo switch OK to take
this much power or current?
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britishtrident
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| posted on 26/2/05 at 08:37 PM |
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quote:
Originally posted by clbarclay
Are thermo switches output on/off (digital) or are they like senders for water temp guage and give an variable resistance output (analogue).
If the latter, then a relay is necissery, the fan won't operate properly and will most likely ruin the electric motor. Electric fan motors, like
most motor are designed to work at constant speed with an un restricted input.
Just good old fashioned bimetal switches, the old Kenlowe ones were adustable.
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