# Category: All Videos

## How to Calculate Three Phase Voltage Imbalance Description

Calculating 3 phase voltage imbalance is easy and we show you exactly how to measure 3 phase voltage and 3 phase voltage imbalance in this video.

## Start Winding and Capacitor Crankcase Heater

There is an interesting old school way of providing crankcse heat using a run capacitor and I show you how it works.

–Bryan

## This AC Compressor Runs Backwards ON PURPOSE

We show the unique way this bristol compressor is wired that allows it to run in different directions to vary the capacity (unload).

–Bryan

## See What’s Inside a Scroll Compressor

We cut open a burned out scroll compressor and show what’s inside.

–Bryan

## Fluke vs. Chinese Megohmmeter

In this video, we test a high-quality Fluke Megohmmeter against two cheap Chinese versions from Amazon and see how they perform.

–Bryan

## See What’s Inside a Reciprocating Compressor

We cut up a Bristol recip that is shorted to ground and we see what we can find out.

–Bryan

## How to Identify Refrigerant Type

We show how to loosely determine a refrigerant type in a tank using the PT chart built into the Testo digital manifolds.

–Bryan

## Ductless Cleaning and Maintenance Start to Finish

Cleaning ductless systems is critical… and a pain..
Rather than just telling you how we do it let me show you some of the key points.
This video demonstrates cleaning and testing a ductless system including pulling the blower wheel and washing the evaporator with a bib kit.

I also wrote a process for this for The ACHR NEWS HERE

–Bryan

## Testing the Leak Rate on Your Micron Gauge Itself

As a technician gains skill they will learn that regularly testing your tools is a huge part of success. It isn’t long in the field before techs find out that just because a meter or gauge gives a particular reading it doesn’t ALWAYS mean it is correct. Vacuum is one of these areas.

Everything in an air conditioning and refrigeration system leaks to some extent, our job isn’t to eliminate all leaks, our job is is to reduce the leakage rate to as low as possible. When using a sensitive micron gauge we find that isolating an assembly and checking the “decay” or standing leak rate is a great way to test and ensure that a system has minimal leaks and moisture. The challenge is that all of the connections in your rig leak and even the vacuum gauge itself leaks.

Some techs attempt to test the leak rate on micron gauge by connecting it to a core tool and then straight to the pump, evacuating the gauge down to very low level and then valving off. If you do this, you will find that every commercially available vacuum (micron) gauge shoots up pretty quickly. This is because the VOLUME of the gauge and coupler are so low that ANY leakage whatsoever has an enormous effect.

In this video Ulises Palacios shows us how to use an an empty recovery tank to better test the leak rate of a vacuum gauge rig.

It is certainly important to test all of your vacuum rig components, just remember that volume makes a huge difference when decay (standing vacuum) leak testing.

— Bryan

## How to Evacuate an Air Conditioning System (Fast and Deep Vacuum)

Evacuation Start to finish with some of the best evacuation practices. Click below to see the video.

–Bryan

Scroll to top
Translate »

### Daily Tech Tip

Get the (near) daily Tech Tip email right in your inbox!