HRX-MM-N007
Chapter 3 Alarm Indication and Troubleshooting
3.3 Troubleshooting HRS Series
1. Check the facility water system.
Check that the facility water system capability satisfies the required facility water flow rate that is
specified in the Operation Manual.
2. Facility water is contaminated.
Check that the facility water is clean (without any foreign matter or discolouration).
3. Incorrect flow rate of the facility water.
Install a flow meter and check that the facility water system satisfies the required facility water flow
rate that is specified in the Operation Manual.
* Facility water does not flow when the Thermo-Chiller is not operating. Check the facility water flow
rate while the external load is being applied to the Thermo-Chiller or the circulating fluid temperature
is being decreased.
4. Water-cooled condenser is contaminated.
Contamination given to the water-cooled condenser reduces cooling capacity. Check the
water-cooled condenser for contamination by following the instructions shown below:
(1) Remove the pipings connected to the inlet and outlet of the facility water.
(2) Remove the upper panel and the right panel.
(3) Remove the plug of the water-cooled condenser, and check inside the water-cooled condenser
for contamination.
5. External load is out of the specification range.
Cooling capacity varies depending on the facility water temperature, set circulating fluid temperature,
and power supply frequency.
Please refer to the "Cooling capacity" graph shown in the Operation Manual.
Fig. 3.3-13 The port for visual check for contamination inside the water-cooled condenser
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