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Troubleshooting
Chilled Leaving Water Temperature (CLT) and
Chilled Return Water Temperature (CRT) Sensors
Temperature
Resistance
°F (C°)
ohms
14° (-10°)
16598
18° (-7.8°)
14896
21° (-6.1°)
13388
25° (-3.9°)
12047
28° (-2.2°)
10856
32° (0.0°)
9795
36° (2.2°)
8849
39° (3.9°)
8005
43° (6.1°)
7251
46° (7.8°)
6575
50° (10°)
5970
68° (20°)
3748
86° (30°)
2417
104° (40°)
1598
TEST POINTS:
Leaving Water .................................................. Micro-board J11-7/1
Return Water ................................................... Micro-board J11-8/2
Ambient Temperature Sensor
Temperature
Resistance
°F (°C)
ohms
14 (-10°)
55330
23 (-5°)
42227
32 (0.0°)
32650
41 (5°)
25390
50 (10°)
19900
59 (15°)
15710
68 (20°)
12490
77 (25°)
10000
86 (30°)
8057
95 (35°)
6530
104 (40°)
5327
TEST POINT:
Test Point ......................................................... Micro-board J11-9/3
192
SENSOR CALIBRATION CHARTS
Voltage
VD
1,45
1,57
1,69
1,80
1,93
2,05
2,17
2,30
2,42
2,54
2,66
3,22
3,69
4,05
Voltage
Vdc
0,97
1,20
1,45
1,72
2,00
2,29
2,58
2,85
3,11
3,35
3,57
Oil & Discharge Temperature Sensors
Temperature
Resistance
°F (°C)
ohms
32 (0°)
163250
50 (10°)
99500
68 (20°)
62450
86 (30°)
40285
104 (40°)
26635
122 (50°)
18015
140 (60°)
12440
158 (70°)
176 (80°)
194 (90°)
212 (100°)
230 (110°)
248 (120°)
266 (130°)
284 (140°)
302 (150°)
TEST POINTS:
Oil Temperature:
System 1: .................................................. Extension-board J10-7/3
System 2: .................................................. Extension-board J10-6/2
Discharge Temperature:
System 1: .................................................... Extension-board J8-4/1
System 2: .................................................... Extension-board J8-6/3
Pressure Transducers
0 - 200 psig Transducer
Pressure
Voltage
psig
Vdc
0
0,5
25
1,0
50
1,5
75
2,0
100
2,5
125
3,0
150
3,5
175
4,0
200
4,5
Red Wire = 5v, Black wire = 0v, White/Green Wire = signal
TEST POINTS:
Suction Pressure:
System 1: ......................................................... Micro-board J13-7/1
System 2: ......................................................... Micro-board J14-7/1
System 3: ..................................................... I/O Board # 2 J4 - 10/1
System 4: ..................................................... I/O Board # 2 J7 - 10/1
Oil Pressure:
System 1: ......................................................... Micro-board J13-8/3
System 2: ......................................................... Micro-board J14-8/3
System 3: ..................................................... I/O Board # 2 J4 - 11/3
System 4: ..................................................... I/O Board # 2 J7 - 11/3
Discharge Pressure:
System 1: ......................................................... Micro-board J15-8/3
System 2: ......................................................... Micro-board J15-7/1
System 3: ..................................................... I/O Board # 2 J4 - 12/8
System 4: ..................................................... I/O Board # 2 J7 - 12/8
Voltage
Vdc
0,282
0,447
0,676
0,976
1,34
1,76
2,20
8760
2,63
6290
3,04
4588
3,40
3400
3,71
2556
3,96
1946
4,17
1504
4,33
1174
4,46
926
4,57
0 - 400 bar Transducer
Pressure
Voltage
psig
Vdc
0
0,5
50
1,0
100
1,5
150
2,0
200
2,5
250
3,0
300
3,5
350
4,0
400
4,5
YORK INTERNATIONAL
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