Wiring Controlling 110v Swamp Cooler Using Nest Thermostat I Would - Preliminary situation: no relays energized. One set of ry2's direct energy one direction to the motor. Second circumstance: sw2 caused, its no contact energizes ry2, which reverses motor polarity and latches itself (you'll need a pair of diodes or another relay touch set to accomplish each reversal and latching). Third circumstance: sw2 released, ry2 remains latched, mechanism swings the alternative direction. Fourth circumstance: sw1 prompted, its no touch energizes ry1. An nc contact set on ry1 breaks ry2's latching circuit, and the identical no contact latches ry1 on until power drops away. The second ry1 touch set's nc interrupts power to the motor. To be able to motive the motor to rotate clockwise, and after a time it will interact ls1, ultimate ls1-c and nc, so one can connect the supply positive to k1-eleven and permit modern-day to glide via the relay coil and into the supply terrible thru k2-1 and a couple of.
With strength ( and - ) connected and restrict switches ls1 and ls2 disengaged, the only street to be had for contemporary drift might be from the deliver high-quality ( ) to k1-1, then through k1-2, the motor, k1-5 and four, and eventually via k2-1 and a pair of to the supply poor, (-).