07-29-2016, 06:07 PM
Interesting.
There are two possibilities on the backwards business. One, it was plumbed backwards. On the compressor I put in the suction and discharge tubing was different sizes, so you would really have to work at it. Two, the way you make an AC motor run in the opposite direction is that you reverse the run wire and the start wire. In other words, if the start wire is wired straight to hot, and the run wire from the compressor is wired to the capacitor then the motor will turn in the opposite direction.
The problem with that is that the start windings are light gauge wire compared to the run windings. Meaning the motor windings could overheat if the motor runs backwards for extended periods.
On a new compressor the wiring is usually clearly marked for start, run, and common.
There are two possibilities on the backwards business. One, it was plumbed backwards. On the compressor I put in the suction and discharge tubing was different sizes, so you would really have to work at it. Two, the way you make an AC motor run in the opposite direction is that you reverse the run wire and the start wire. In other words, if the start wire is wired straight to hot, and the run wire from the compressor is wired to the capacitor then the motor will turn in the opposite direction.
The problem with that is that the start windings are light gauge wire compared to the run windings. Meaning the motor windings could overheat if the motor runs backwards for extended periods.
On a new compressor the wiring is usually clearly marked for start, run, and common.
Richard and Rhonda Entrekin
95 Newell, 390 Ex caretaker
99 Newell, 512 Ex caretaker
07 Prevost Marathon, 1025
Maverick Hybrid Toad
Inverness, FL (when we're home
)