Spirax Sarco RIM20, Installation And Maintenance Instructions Manual, Page: 111 / 132

IM-P198-05 MI Issue 2 111
Fig. 53 Remote feed through board sensor connections
6.8.3 Symptom: no output
1. For remote mounted electronics, carefully check all the wiring connections in the remote
mount junction box. There are 18 connections that must be correct, verify each color
(black and red), shield, and wire number.
2. Turn on the pressure and temperature display in the Display Menu and verify that the
pressure and temperature are correct.
3. Using ESD precautions and hazardous area precautions, remove the electronics enclosure
window cover. Disconnect the turbine sensor from the electronics stack or remote feed
through board. Refer to Figure 54. Measure the resistance from each outside pin to the
meter ground should read a very low resistance. Measure the resistance from the center
pin to the meter ground - this should be grounded to the meter.
With the sensor still disconnected, go to the first column of the hidden diagnostics and display
the turbine frequency, f. Hold a finger on the three exposed pins on the Analogue board. The
meter should read electrical noise, 60 Hz for example.
If all readings are correct, re-install turbine sensor wires.
4. Verify all meter configuration and troubleshooting steps previously described. There are
many possible causes of this problem, consult factory if necessary.
Turbine
Pressure Temperature
Turbine
Pressure
Temperature
Fig. 54 Turbine Sensor Connector
Outside
Inside
Outside