Operating manual - ComPAC
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011769 en 2020.03
Design and function
3.2.7 Air purge valve
If there is air in the refrigeration plant, it tends to accumulate in the receiver or the condenser.
On ComPAC (water-cooled condenser), the air purge valve is fitted at the top of the HP float valve
cover at the bottom of the condenser, Fig. 14, pos. 3.
Note: The valve at the bottom of the cover, Fig. 14, pos. 4, is used for liquid draining (R717).
During air purging the air purge valve should be connected to an open vessel containing water via
a refrigerant hose.
The air will leave the water as bubbles whereas the R717 gas will be absorbed by the water.
Note: R717 containing water must be disposed of in a correct and proper way, see chapter 2.3.9
Purging a refrigeration plant.
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