Figure 7.33 R-134A Compressor Pressure And Motor Current Curves Vs Ambient Temp (1 Of 2) - Carrier 69NT40-541-001 Operation And Service

Figure 7.33 R-134a Compressor Pressure and Motor Current Curves vs Ambient Temp (1 of 2)

Note: Curves to be used as troubleshooting guide only for model series 69NT40 with
fresh air makeup vent closed, unit powered on 460 VAC/60hz and SMV 100% open.
(Bar)
(22.0)
(20.7)
(19.3)
(17.9)
(16.6)
(15.2)
(13.8)
(12.4)
(11.0)
(9.7)
(8.3)
(6.9)
(5.5)
(Bar)
Compressor Discharge Pressure Versus Ambient Air Temperature at Stable Box Temperature
T-316
psig
320
300
280
260
35 F (1.7 C)
240
Box
220
200
180
160
140
120
100
80
60 70
(15.6) (21.1) (26.7)
Ambient Air Temperature
psig
(22.0)
320
(20.7) 300
(19.3) 280
(17.9) 260
(16.6)
240
(15.2)
220
200
(13.8)
(12.4) 180
(11.0)
160
(9.7) 140
(8.3)
120
(6.9) 100
(5.5)
80
60 70
(15.6) (21.1)
Ambient Air Temperature
80 90 100
(32.2) (37.8)
0 F (--17.8 C)
Box
80 90 100
(26.7) (32.2) (37.8)
7–48
F
110 120
( C)
(43.3)
110 120
F
(43.3)
(48.9) ( C)