Hi, I have an evaporative cooler with a 3 speed fan. The speed switch has 6 speed positions, 3 speeds with the water pump running , 3 speeds without the pump. Occasionally I find the low fan speed still too high and would like to lower it by about 50%.
attached is the circuit diagram.
The motor specs are :
Fasco model 808555KVA A19
240V , 50Hz phase 1 (I am in Australia)
Watts 140
Amps 1.6
RPM 1300/3sp Type: CSR
μf/VS nil
μf/VR 1/440
I am tempted to simply place a 50 watt or 100 watt light globe in series with the motor with a switch to enable this to be selected as required. The actual light globe can be hidden and seems to be a very simple solution for me to implement and cheap. I am not worried about the small waste of energy as it is only likely to be used 2 or three hours at a time on maybe 10 times per year.
Ï do not need a very sophisticated solution as long as it did not damage the motor.
I t would not matter if I had to start it on a higher speed first to let the motor get up to speed.
If a thing such as a variable automatic transformer , or an additional capacitor would do the job I could possibly do that but would not know exactly what to get. With light globes I can just keep experimenting until I get the right value.
Thanks in advance ...
attached is the circuit diagram.
The motor specs are :
Fasco model 808555KVA A19
240V , 50Hz phase 1 (I am in Australia)
Watts 140
Amps 1.6
RPM 1300/3sp Type: CSR
μf/VS nil
μf/VR 1/440
I am tempted to simply place a 50 watt or 100 watt light globe in series with the motor with a switch to enable this to be selected as required. The actual light globe can be hidden and seems to be a very simple solution for me to implement and cheap. I am not worried about the small waste of energy as it is only likely to be used 2 or three hours at a time on maybe 10 times per year.
Ï do not need a very sophisticated solution as long as it did not damage the motor.
I t would not matter if I had to start it on a higher speed first to let the motor get up to speed.
If a thing such as a variable automatic transformer , or an additional capacitor would do the job I could possibly do that but would not know exactly what to get. With light globes I can just keep experimenting until I get the right value.
Thanks in advance ...
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