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Getting the Details on Digital
Reprinted from RSES Journal View the original article By Carter Stanfield, CM. Original publication date July 2011. The digital gauges used by today’s HVACR service professionals are a far cry from what was employed by many in the industry even 10 years ago. But knowing the nuances of these instruments is critical to maximizing their…
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Using a Vacuum Pump With a Recovery Machine
Many contractors pull the refrigerant out and think the work is done. In reality, once you get to 15 inches of vacuum, you are only half finished. Once the recovery machine has done its work, it’s time to finish off the job with a vacuum pump. Why a Vacuum Pump? Many manufacturers recommend evacuation to…
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Safety and Evacuation
It’s a good idea to review the safety procedures before starting evacuation. Always read and comply with all warnings and instructions found in the manufacturer’s manual before operating any pump. When working with tools and machines like a vacuum pump, it’s always wise to wear safety goggles. Some pumps come with an exhaust cap, which…
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Corroded Oil Pump Got You Down? Flush It!
You know how important it is to change the oil in your pump on a regular basis, right? Because if you don’t, it won’t work as well and will wear out faster. For the purpose of this note, let’s say you don’t change your pump oil. EVER. If the damage isn’t too severe, there still…
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Choosing The Right Vacuum Pump For The Job
Like any other job, having the right equipment can make all the difference. A quality vacuum pump will consistently pull a deep vacuum of 50 microns or less. Some will even pull as low as 15 microns. To achieve the deepest vacuum in the shortest amount of time, use a 2-stage rotary vane, oil-sealed pump,…
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Annual Vacuum Pump Maintenance
Technicians in northern climates should plan to give their vacuum pump and annual maintenance check before putting it on the shelf for the winter. This will help ensure a clean, easy startup in the spring, as well as protect the investment you’ve made in the pump. The recommended maintenance and service checklist will take less…
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Vacuum Pumps and Cold Weather Starts
If you’ve been having problems starting your vacuum pump in cold weather, we have an easy solution for you: replace your vacuum pump oil immediately after a job. Here’s why. By the time you complete an evacuation, the entire vacuum head is immersed in the oil reservoir. When the pump is turned off, oil from…
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Why (And How) to Change Your Vacuum Pump Oil
Your vacuum pump’s oil is what keeps it, well, pumping. It lubricates the pumping apparatus, and collects moisture and contaminants from evacuated systems. And since vacuum pumps don’t have filters, you need to change the oil frequently for the pump to perform as efficiently as possible. If you don’t, you’ll quickly run into problems. Oil…