HVAC Condensor fans stalls during cycle
It starts no problem and the issue only seems to pop up after running for awhile.
Things I've done:
-Tested that the caps charge from a multimeter (I don't have a capacitance meter)
-Topped up the 2 oil ports in the fan motor (it's an old unit)
-Verified the shaft can spin no problem
-Measured resistance on the leads, and they appear OK. (Black to yellow: 45.5, Black to brown: 93.7, Yellow to brown: 138.5 -- No connection on any lead to ground)
-Verified 240V at the unit.
I have no idea what more could possibly be checked with this stupid thing. If I understand correctly the capacitor ONLY applies during the start up correct, so even if it is dying (can't confirm the condition due to lack of capacitance meter) and the fan can start that shouldn't be the problem right ? Any other thoughts on things to take a look at ?
EDIT: I sat at the unit while it ran and waited it out until it stalled. While everything is running fine the voltage between black (common) and brown is 225v. When I started to hear the fan slow down I measured again and the voltage had dropped to 89V, and stayed at 89V when the fan stalled