Rainbow D4C Main Power Switch

This switch works with all D4C and SE Rainbow systems. If you have a switch with 6 holes (R3127) where the wires push in, please read the information below on how to wire this version.

Factory OEM switch for the D4C SE (Special Edition) and D4C model Rainbow. This switch first came as pictured (diagram) in the early version D4C that came out in 1986. Rexair then changed to a new design switch that did not have wires attached. The second version, effective serial number 6171011, had six holes that you would stick the wires into. Inside each hole was a spring-loaded catch that held the wires in place.

Over time, the factory found this design inferior, and returned to the four-wire system. If you have the previous design with six holes (R3127), below is how you connect the four-wire system.

Each wire is 9 inches (22.86 centimeters) long.

• One black wire from the switch and one black wire from the power cord make a double connection.
• One black wire from the switch and one white wire from the power cord make the second double connection.
• One blue wire from the switch and one black wire from the field, and one wire from the power nozzle receptacle, make the first triple connection.
• One blue wire from the switch and one black wire from the field, and one wire from the power nozzle receptacle, make the second triple connection.

There is no hot and neutral in this application.

Used in the D4C through serial number 6171010. Later D4C units use the R3127 switch.