656 Modern Refrigeration and Air Conditioning Copyright Goodheart-Willcox Co., Inc. Typical Refrigerator Statistics Condition 70°F Ambient Temperature 90°F Ambient Temperature 100°F Ambient Temperature Cabinet Temperature 38°F 40°F 47°F % Operating Time 38 62 100 Cycles per Hour 3 2 None kWh/24 hrs 3.8 6.0 9.9 Temperature Control Position 4 4 4 Evaporator Air Temperature 1.5°F –1°F 0°F Suction Pressure (Min–Max) 2" Hg–13 psig 0–13 psig 13–20 psig Watts (Complete System) 390±20 395±20 395±20 Suction line High-pressure vapor Low-pressure vapor High-pressure liquid Low-pressure liquid Piercing valve Evaporator Filter-drier Capillary tube Compound gauge Condenser High-pressure gauge Compressor Discharge line Piercing valve Goodheart-Willcox Publisher Figure 25-16. A gauge manifold connected to a hermetic system. Piercing valves are used to access a hermetic system that has no service valves. Goodheart-Willcox Publisher Figure 25-17. This chart shows operating characteristics of 18 ft3 combination refrigerator-freezer that has 1/3 hp two-pole single- phase compressor motor.