Chart 10, A/C System Performance Test: Notes

SYSTEM PERFORMANCE CHART (AT 70°F/21°C AMBIENT AIR TEMPERATURE)

Application

Specification

Ambient Air in Degrees °F/°C

70°F/21°C

Hi Side Pressure ⁽¹⁾

149 PSI

Pressure Plus and/or Minus 20 PSI (+/- 140 kPa)

1025 kPa

Lo Side Pressure ⁽¹⁾

25 PSI

Pressure Plus and/or Minus 2 PSI (+/- 8 kPa)

170 kPa

Center A/C Outlet Temperature ⁽²⁾ (+/- 2°F (1°C))

50°F (10°C)

⁽¹⁾	Pressure reading taken just before Compressor Clutch releases.

⁽²⁾	Outlet temperature will be higher on humid days.

SYSTEM PERFORMANCE CHART (AT 80°F/27°C AMBIENT AIR TEMPERATURE)

Application

Specification

Ambient Air in Degrees °F/°C

80°F/27°C

Hi Side Pressure ⁽¹⁾

178 PSI

Pressure Plus and/or Minus 20 PSI (+/- 140 kPa)

1225 kPa

Lo Side Pressure ⁽¹⁾

27 PSI

Pressure Plus and/or Minus 2 PSI (+/- 8 kPa)

185 kPa

Center A/C Outlet Temperature ⁽²⁾ (+/- 2°F (1°C))

52°F (11°C)

⁽¹⁾	Pressure reading taken just before Compressor Clutch releases.

⁽²⁾	Outlet temperature will be higher on humid days.

SYSTEM PERFORMANCE CHART (AT 90°F/32°C AMBIENT AIR TEMPERATURE)

Application

Specification

Ambient Air in Degrees °F/°C

90°F/32°C

Hi Side Pressure ⁽¹⁾

214 PSI

Pressure Plus and/or Minus 20 PSI (+/- 140 kPa)

1475 kPa

Lo Side Pressure ⁽¹⁾

29 PSI

Pressure Plus and/or Minus 2 PSI (+/- 8 kPa)

200 kPa

Center A/C Outlet Temperature ⁽²⁾ (+/- 2°F (1°C))

54°F (12°C)

⁽¹⁾	Pressure reading taken just before Compressor Clutch releases.

⁽²⁾	Outlet temperature will be higher on humid days.

SYSTEM PERFORMANCE CHART (AT 100°F/38°C AMBIENT AIR TEMPERATURE)

Application

Specification

Ambient Air in Degrees °F/°C

100°F/38°C

Hi Side Pressure ⁽¹⁾

272 PSI

Pressure Plus and/or Minus 20 PSI (+/- 140 kPa)

1875 kPa

Lo Side Pressure ⁽¹⁾

33 PSI

Pressure Plus and/or Minus 2 PSI (+/- 8 kPa)

230 kPa

Center A/C Outlet Temperature ⁽²⁾ (+/- 2°F (1°C))

56°F (13°C)

⁽¹⁾	Pressure reading taken just before Compressor Clutch releases.

⁽²⁾	Outlet temperature will be higher on humid days.

FREON PRESSURE/TEMPERATURE RELATIONSHIP CHART - LOW SIDE ⁽¹⁾

Pressure (PSI)

Tempurature °F (°C)

53 (12)

55 (13)

57 (14)

59 (15)

60 (15.5)

62 (16.6)

64 (18)

65 (18.5)

67 (19.5)

68 (20)

70 (21)

72 (22)

74 (23.5)

75 (24)

76 (24.5)

77 (25)

79 (26)

81 (27)

83 (28.5)

84 (29)

85 (29.5)

87 (30.5)

89 (31.5)

100

90 (32.5)

102

91 (33)

105

93 (34)

108

95 (35)

110

96 (35.5)

112

97 (36)

115

99 (37)

118

101 (38.5)

120

102 (39)

125

104 (40)

130

107 (42)

135

109 (43)

140

112 (44.5)

⁽¹⁾	A/C Low Side BD 28 check made after 5 minutes with engine "OFF". A given pressure should correspond to a temperature reading plus and/or minus 6°F of the specified value.