TM-9-2320-280-34 HMMWV Direct Support & General Support Maintenance Manual Download
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NOTE Table 2-1.1 applies to air-conditioning systems serviced with FR-12 refrigerant only. Relative Surrounding Engine Desirable Center Low-Side High-Side Humidity Air Temperature Speed Outlet Discharge Air Pressure Pressure (percent) °F (°C) (rpm) Temperature °F (°C) ± 5 psi ± 25 psi 70 (21) 42 (6) 9 157 20 80 (26) 1500 44 (7) 15 188 90 (32) 46 (8) 20 206 100 (37) 47 (8) 23 235 70 (21) 44 (7) 11 161 30 80 (26) 1500 45 (7) 16 188 90 (32) 47 (8) 22 214 100 (37) 48 (9) 26 247 70 (21) 44 (7) 12 165 40 80 (26) 1500 46 (8) 18 200 90 (32) 48 (9) 24 223 100 (37) 50 (10) 28 258 70 (21) 46 (8) 12 169 50 80 (26) 1500 48 (9) 20 206 90 (32) 52 (11) 24 231 100 (37) 54 (12) 28 269 70 (21) 46 (8) 14 173 60 80 (26) 1500 52 (11) 22 213 90 (32) 54 (12) 26 239 100 (37) 56 (13) 30 280 70 (21) 48 (9) 16 178 70 80 (26) 1500 52 (11) 22 218 90 (32) 56 (13) 28 247 100 (37) 60 (16) 30 292 70 (21) 52 (11) 20 182 80 80 (26) 1500 58 (14) 24 222 90 (32) 62 (17) 30 257 100 (37) N/A N/A N/A 70 (21) 62 (17) 22 186 90 80 (26) 1500 66 (19) 32 230 90 (32) 72 (22) 42 264 100 (37) N/A N/A N/A TM 9-2320-280-34 Change 1 2-20.1/(2-20.2 blank) Table 2-1.1. Normal Operating Temperatures and Pressures (FR-12).