Be sure motor pump and cooler are properly grounded. See evaporative cooler installation instructions and motor and pump instructions for proper motor and pump wiring.

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Evap cooler wiring diagram. Once again if it is practical placing the switch on the outide of the flue chase can be a good option. On the other hand this diagram is a simplified variant of the structure. Determine first the best location for the switch. An evaporator cooler switch. Other wiring color codes to wire in the thermostat the above would be followed. Amazon affiliate link to swamp cooler switch.
Here is how to wire up a 120 volt swamp cooler switch controller. Always follow the schematics that come with the switch that is bought this is only an example on the left side is the wiring coming from a breaker with black hot white common and green ground. The swamp cooler wiring. It makes the process of assembling circuit easier. Evaporative cooler switch wiring diagram wiring diagram swamp cooler switch wiring diagram. This diagram is a basic schematic and is not intended to represent all methods of installation because of various cord plug and pump configurations.
This can be tricky as the route must communicate with unfinished space to the power source and also communicate with the attic. Basic evaporator switch wiring schematic. For example l1 is labeled as power which is the black wire from the circuit breaker. Refer to above diagram the green. The diagram provides visual representation of the electrical arrangement. The above is a basic wiring schematic for a swamp cooler switch.
All common wires white are tied together so the circuit is completed. Httpsamznto2kx6lud click here for a complete write up on wiring a swamp cooler. This diagram gives information of circuit. The above is a basic wiring diagram of how to wire up a thermostat for swamp cooler.