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In Progress
EPA Certification:
Not Texted
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Piotr Kisiel at HVAC Technical Academy
Piotr Kisiel video - pump down procedure
Piotr Kisiel video transcript - pump down procedure (Training video Transcript)
Hello everyone, my name is Piotr Kisiel, and I’m a student at HVAC Technical Academy. Today, I’m going to talk about the pump down procedure—what it’s used for and how it’s done.
Before starting the pump-down procedure, the condenser unit needs to run for about 10 to 15 minutes. This ensures the system is operating properly and that the compressor is functioning correctly.
Now, you may ask what the pump-down procedure is and why we need to do it. The pump-down procedure is used to recover refrigerant either into the condenser or to remove it from the system entirely. We typically perform this procedure when we need to open the system, such as when replacing a coil or changing a filter drier. Pumping the refrigerant down into the condenser is one of the fastest and most efficient ways to remove refrigerant from the rest of the system.
Here’s how it’s done:
First, run the system for 10 to 15 minutes. Then, close the liquid line valve, which is the high side valve. After that, monitor your gauges and watch for the low side pressure to drop.
When the low side pressure reaches approximately 0 PSI, close the vapor line valve and immediately shut off the power to the system. It’s important to shut the power off right away to prevent damage to the compressor.
That’s the pump down procedure.
Thank you for listening.