discharge service valve is frontseated. This captures all the liquid refrigerant in the condenser and the hot gas discharge line. Using the condenser as a storage area does not cause high-discharge pressure (as commonly believed), unless the system is severely overcharged. The condenser will hold the normal system charge and not be completely full. Liquid occupies less space than vapor, and the vapor stops coming into the condenser before the condenser becomes full. See Figure 15‑21. 15.12.2 Capturing Refrigerant in the Condenser When a system does not have a liquid receiver, the condenser can be used as a storage area to capture refrigerant. A shut-off (isolation) valve must be available at the condenser outlet liquid line. The system is pumped down into the condenser after closing the shut-off valve at the condenser outlet liquid line. After pumpdown to the condenser, the compressor is shut off, and the Goodheart-Willcox Publisher Figure 15‑21. The system is pumped down into the condenser after closing the shut-off valve at the condenser outlet. 278 Heating and Cooling Essentials Copyright Goodheart-Willcox Co., Inc.