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Question:

how would you change the running direction of a Universal motor running on AC?

i salvaged a 1.6kw motor from a vacuum cleaner-wishing to make it into a blower but i want to use the impeller as a propeller- i can do this by changing the running direction of the motorhowever i do not know how to do this-there are two wires leading to the motor brown and blue these wires are also connected to a capacitor in Parallel they lead straight from the plugi have tried disconnecting the capacitor to see if i can hand start the motor in the opposite direction-however even when the capacitor is disconnected the motor still runs in the same direction there are no more wires coming out of the motor and the 2 brushes are connected to the field wires(the electromagnets around the armature)- can the direction of the motor be changed

Answer:

basically by way of reversing the path the present runs to the sector windings relative to the armature. Reversible prevalent automobiles are familiar on ac powered toy trains, maximum famously those by way of Lionel. this may be a fools errand: i don't see that reversing the path of rotation of the impeller is going to end what you opt to do: maximum impellers are unidirectional, they artwork poorly, if in any respect, whilst became around interior the incorrect path. you're able to rather talk approximately a thank you to rearrange the duct-artwork so as that the impeller strikes the air as you choose in its modern configuration.
Universal motors are usually series connected, meaning the armature and field are in series. You have to reverse the connections ro one of them, the armature or the field. The wiring will look like supply active, field in, field out, brush in (to armature), brush out, supply return. The capacitor is a electrical noise suppressor, just connected across the supply, or sometimes across the brushes. If it is shunt wound as you seem to describe (meaning the field is across the supply and so is the armature) then the solution is still the same, reverse one of them.

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