Service Manual -
HRG18xxS1P
508206-01
Issue 2140
Page 54 of 83
Verifying Suction Pressure Transducer Operation
Using a multimeter set to VDC with the Suction Pressure Transducer connected to the “Suct P” 3-pin connector on the
control board. Pin 1 (Red wire +5VDC) to Pin 3 (Black wire - GND) should read 5 VDC continuous. Pin 2 (Blue wire output
from transducer) to Pin 3 (Black - GND) should read 0.5 to 4.5 VDC and will vary depending on suction pressure measured.
See Table 16.
VDC
Figure 26. Suction Pressure Transducer Voltage
Suction Pressure
(PSIG)
DC Voltage Output
(Pin 2 to Pin 3)
Suction Pressure
(PSIG)
DC Voltage Output
(Pin 2 to Pin 3)
0
0.49
110
2.69
10
0.69
120
2.89
20
0.89
130
3.09
30
1.09
140
3.29
40
1.29
150
3.49
50
1.49
160
3.69
60
1.69
170
3.89
70
1.89
180
4.09
80
2.09
190
4.29
90
2.29
200
4.49
100
2.49
210
4.50
Table 16. Suction Pressure Transducer Output Voltage