Hvac Gauges

May sound stupid but im at school and for this im cold and when I take out the gauges I need to transfer the liquid on the high side until the vapor before taking off and gauges j I forgot if you do the same with the systems with Schrader valves. Also in specific detail with frontseat and how to make a back seat if I remember pumpdown Thanks!

For pump unit closing the valve on the high side and leave the suction side open. If the device has a low pressure switch, you must manually close the contactor. Do not let the pressure drop in suction below 0 psi. Once the suction pressure is you close the suction valve and Walla-the unit is pumped down. Schrader valves to disconnect, simply pull the hose connections as soon as possible and pay attention to the high side liquid line as refrigerant liquid will burn your fingers.

you'll need to have either a hose assembly with low loss or a ball valve on the end. Thus, while the system is running, close the valve on the top or if it is a low-loss editing simply disconnect the port. open your gauges and you will see that you get high side as it feeds into the low side, I always bleed the middle line is not used, to avoid putting Condesas not in the system when you open your gauges.