Originally Posted by mendozer

Manifold hooked up and set up the AC to high, doors open like FSM says....no pressure readout at all. The gauge knobs were indeed open.

Then I set a vacuum to the system to the lowest I could get (-30 on the low side) and closed valves, came back 10-15 minutes later, still at -30. So there's not an obvious leak.

As for the sight glass, I don't know what's normal. The manual says it should froth a bit right after turning off then go clear. I think it does that, but I ran over to see from the driver side so maybe it was clear the whole time. During operation, I'm not sure if there are bubbles. It looks like clear liquid is swirling around in there but a bit of white foam...are those bubbles? I would need to see an example of an obvious bad sign.

The major deficit is that nothing happened on the manifold~!