Commercial Air Conditioning Units in Durham – A Refrigeration Vacuum Pump.

A refrigeration vacuum pump is a device used to purge air conditioning and refrigeration (AC/R) systems of contaminants such as moisture and air. This purging action is achieved by inducing a deep vacuum in the system by continuously drawing small amounts of gas out over a protracted period. 

Residential HVAC Units in Durham – Water in the System.

During this process, any water in the system is boiled off and the resultant vapor and any air is drawn out. Refrigeration vacuum pumps are typically rotary variants, many of which feature two stage operation. The vacuum values in question are expressed in microns with the average two stage vacuum pump capable of producing values of 50 microns or less.

Residential Air Conditioning Units in Durham – Rotary or Scroll Type.

Refrigeration vacuum pumps are typically off-set rotary or scroll type pumps. Many deep vacuum pumps feature twin stages which are basically two identical pumps run in series. This type of pump can pull a vacuum of 250 microns with ease and may even produce pressures of 50 microns or less. To illustrate the depth of this type of vacuum, the micron pressure of air at sea level is approximately 760, 000 microns!

Home Air Conditioning Systems in Durham – Capacity Ratings Ranging.

Refrigeration vacuum pumps are available in a number of capacity ratings ranging from approximately 1.2 to 10 cubic feet per minute (CFM). It is important to ensure that the vacuum pump used is appropriately rated for the particular size of AC/R system in question. Using a pump that is too small can cause unnecessary wear and possible damage. It is also essential to maintain correct oil levels in the refrigeration vacuum pump during purging operations.