Comments for Air Phase - All About Air Conditioning

Comment on HVAC Triple Evacuation by xaymik

xaymik — Mon, 25 Oct 2010 21:01:37 +0000

did you make that T for the micron gauge yourself or did it come like that?

Comment on HVAC Triple Evacuation by DrZarkloff

DrZarkloff — Mon, 25 Oct 2010 20:32:48 +0000

@xaymik It came with the micron gauge.

Comment on HVAC Triple Evacuation by sickbastard80

sickbastard80 — Mon, 25 Oct 2010 19:56:08 +0000

i’ve had 3 different employers NON OF them ever evacuate, they say it’s a waste of time and money. what do you think z??? of course all they do is A/c not refrigeration. is it really necesary to evacuate?? cos as far as i know NOBODY i know evacuates. i live in north idaho though, northern dry dessert kind of weather.

Comment on HVAC Triple Evacuation by DrZarkloff

DrZarkloff — Mon, 25 Oct 2010 19:48:44 +0000

@sickbastard80 I advise you to evacuate but you can get away with it if your system is dry in a R-22 system. I wouldn’t even try it with a R-410a system.

Comment on HVAC Triple Evacuation by FlatOhead

FlatOhead — Mon, 25 Oct 2010 19:45:57 +0000

here is a thought/tip for you…………
When breaking the vac with Dry Nitrogen in tripple evacuation, try…. Making a coil out of some copper, (3/8″)put a 50 watt domestic light in the middle of the coil and turn it on. Allow the nitrogen to go through the copper, it is warmed up the nitrogen enough and will absorbe more moisture, therefore giving you a dry system…. What does moisture form when mixed with refrigerants/freon, acid What does acid do to motor windings?

Comment on HVAC Triple Evacuation by DrZarkloff

DrZarkloff — Mon, 25 Oct 2010 19:14:45 +0000

@FlatOhead Acid eats away the isolation around the windings.

Comment on HVAC Triple Evacuation by FlatOhead

FlatOhead — Mon, 25 Oct 2010 18:38:03 +0000

right on the mark Dr so “sickbastard 80″ maybe you should be taking tyhe docs advise and evacuating. Although in a mild form it is Hydrochloric acid. Keep the videos coming Dr

Comment on HVAC Triple Evacuation by DrZarkloff

DrZarkloff — Mon, 25 Oct 2010 18:05:40 +0000

@FlatOhead Thanks for watching.

Comment on HVAC Triple Evacuation by Rueuhy

Rueuhy — Mon, 25 Oct 2010 17:32:44 +0000

Just curious – why not put the vacuum gauge on and ensure you can get down to 500 microns first and ensure you have no leaks before using the nitrogen? Is it because of the moisture in the system will not allow it before the nitrogen purge? Thanks for any answers.

Comment on HVAC Triple Evacuation by DrZarkloff

DrZarkloff — Mon, 25 Oct 2010 17:02:54 +0000

@Rueuhy It’s important to remove as much moisture as possible from the system. Nitrogen will soak up the moisture and allow you to pull it out easier with the vacuum pump.