SMC Networks HRS012-A-10 Series Service Manual page 52

HRX-MM-N007
Chapter 3 Alarm Indication and Troubleshooting
AL25 goes off when the circulating fluid pressure sensor connector is disconnected.
4.
Confirm that "AL25: Circulating fluid
discharge pressure sensor failure"
goes off when the connector "PS1" of
the circulating fluid pressure sensor
(for discharge) is pulled out.
5. Check the circulating fluid pressure sensor after it is replaced.
Replace the circulating fluid pressure sensor (for discharge). (See section "4.5.8 Replacement of
pressure sensor")
After replacing the sensor, operate the Thermo-Chiller and confirm that the alarm does not go off
again.
3.3 Troubleshooting
3-36
Fig. 3.3-22 Circulating fluid pressure sensor
HRS Series