HRX-MM-N007
Chapter 3 Alarm Indication and Troubleshooting
HRS Series
3.3 Troubleshooting
3-39
3.
Check the pump performance.
Operate the Thermo-Chiller as a single unit.
Install a pressure gauge (measurable range: approx. 0 to 1 MPa), a valve (with approximate flow
adjustability), and a flow meter (measurable range: approx. 0 to 30 L/min) to the Thermo-Chiller.
Make an isolated operation of the pump (by pressing the "RUN/STOP" key and "MENU" key
simultaneously) to check the pump performance.
Based on the measurement results of the flow meter and the pressure gauge installed, check if the
pump performance satisfies the values shown in the "Pump performance" graph provided in the
Operation Manual.
4.
A small amount of circulating fluid flows.
Check that circulating fluid, even for a small amount, flows through the pump (that the pump can be
rotated) when the pump makes an isolated operation (by pressing "RUN/STOP" key and "MENU"
key simultaneously) with the piping conditions provided in section "3. Check the pump performance".
Fig. 3.3-24 Piping example
