Purger

Installing an AUTO-PURGER Saves Money
An AUTO-PURGER noncondensible gas (air) purger quickly and efficiently removes air from a refrigeration system. Noncondensible gases, primarily air, present in a refrigeration system increase condensing pressures. Air also reduces the overall capacity of the refrigeration system by acting as an insulator, which increases the amount of time compressors mustrun. The increased run-time of compressors, in turn, increase the energy required to operate the system throughout the year. This is true not only during the hot ambient temperatures of summer days, but also during the cool ambient temperatures of night and the winter season. Eliminating air in the refrigeration system reduces the energy required to operate the system, resulting in lowerelectricity bills.
Installation of an AUTO-PURGER results in savings on energy costs all year.

Hansen AUTO-PURGERs are the Best Noncondensible Gas (Air) Purgers
The thousands of satisfied AUTO-PURGER customers are a testament to the quality and reliability of Hansen AUTO-PURGERs. The money saved in reduced energy costs alone will pay for the purchase and installation of an AUTO-PURGER. HansenAUTO-PURGERs are the leader in multipoint purging. Multipoint purging is the only effective method for removing all air from a refrigeration system. In addition, the large air-removal capacity of Hansen AUTO-PURGERs allows a very large amount of air to be removed quickly. This helps ensure that the refrigeration system runs at its design capacity, especially in hot weather months. There are AUTO-PURGERmodels to match a variety of system requirements. From large ammonia or halocarbon systems, to single condenser operation, to hazardous locations, there is an AUTO-PURGER to meet your needs. 2 ❍ CSA ❍ Factory ❍ Multipoint ❍ Payback ❍ Flexible ❍ Models ❍ Large

air removal capacity over a short time span purging

typically within one year installation location

to match a variety of systemsizes and requirements automatic startup

❍ Completely

assembled and tested

and CE certification available

A Wide Range of Models Meet Individual Needs
AUTO-PURGER AP
❍ For multiple purge points, up to 24 points ❍ Ideal for large systems up to 1500 tons (5300 kW) nominal capacity ❍ Total and rapid air removal ❍ Prewired, prepiped, and insulated ❍ Each unit tested on a real refrigerationsystem ❍ Solid-state controls ❍ Completely automatic ❍ Water bubbler included

AUTO-PURGER APM
❍ For multiple purge points, up to four points ❍ Ideal for medium-size systems up to 200 tons (700 kW) nominal capacity ❍ Solid-state controls sense the presence of air and purge for a longer time at those points ❍ Completely automatic with self-diagnostics ❍ Welded pipe construction ❍ Prewired,prepiped, and insulated ❍ Water bubbler included ❍ Functionally tested

NON-ELECTRICAL AUTO-PURGER (NEAP)
❍ Low cost and very simple ❍ Typically used for a single purge point ❍ Ideal for small systems up to 100 tons (350 kW) nominal capacity ❍ Completely a nonelectric design ❍ Especially suited for installation in hazardous atmospheres ❍ Fully automatic ❍ Welded pipe construction ❍ Prepiped andassembled
(shown with optional valve package)

❍ Functionally tested 3

Cost Savings and Payback
Cost of air
The presence of air in a refrigeration system increases the condensing pressure. As a result, the power requirement of the compressor also increases. The chart to the right shows the relationship between condensing pressure and power consumption of the compressor for a typical ammoniasystem. For every 10 psi (0.7 bar) increase in condensing pressure, there is approximately a 6% increase in power consumption by the compressors. This, in turn, means the amount of money required to operate the system also increases. An AUTO-PURGER quickly and effectively removes all air from the system. Therefore, for every 10 psi (0.7 bar) decrease in condensing pressure resulting from the...