Quote:
Originally Posted by dsraven
I would start with the fan issue. I would use a couple of T style push pins from the craft store or staples etc and insert them into the power and ground plugs ins of the motor supply from the back side, then attach some jumper wires to them so you can test the circuit under running conditions without damaging your wiring by stabbing into the wire. when the fan (either one) stops running check to see what the voltage is and then, if good in your mind but the fan is still stopped, connect something that runs on 12v to those jumper wires (a headlight or another fan motor, whatever you have that actually draws some amperage) and see if it works. it would be wired parallel to the motor so if the other 12v draw works then I would look hard at the motor. when you tested before were your fan motors connected? if your multimeter says you have battery power at the terminals when you test that doesn't mean the circuit will support amperage to run a motor, it could fail with a load. just like a loose battery terminal will say you have 12v but when you go to start the car it just clicks and everything shuts off.
when you initially charged the system did you draw a vacuum with a vacuum pump for extended period, like overnight? that is what draws any contaminants out of the system. water, debris from the hose builder or inside the tubing etc. you may have a drop of moisture in the system that becomes ice and plugs your tx. are you able to see or feel the area where the tx is located? does it frost up there and then past that it is warm? did the system come with a spec on how much refrigerant and oil should be added?
|
We must have been posting at the same time. If you read the posting before yours, you'll see that I did trace down the electrical issue with the fan. IT now runs properly.
To answer your question about charging the system. Yes, I used a set of manifold gauges to pull a vacuum with a vacuum pump. Initially ran the vacuum for nearly two hours. Watched it over the next four hours, with no reduction of vacuum, I then ran it again for another hour before closing the valves on the manifold and checking for any signs of a leak overnight. This morning, there was no change in the vacuum, but I opened it all back up to remove the evaporator unit to fuss with the fan issue.
I'm now about to reinstall the evaporator and hoses (with new oiled o-rings) and run another vacuum on it today and see if it holds overnight. Should I be charging the system outside in hot temps or is inside my shop ok?