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6-3. Servicing Refrigerant System
procedures involved in servicing the refrigerant
a. General. When the air conditioner must
system.
undergo maintenance that requires opening the
b. Discharging and Purging System. Refer to
system, the system must be discharged prior to
figure 6-1 for discharging or purging the refrigerant
maintenance and purged and charged after
system.
maintenance. This paragraph covers the basic
6-2
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