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7. INSPECTION AND MAINTENANCE
Heater Replacement Procedure
10. Pass the heater lead wire through the grommet, confirm the connecting destination of the heater
lead wire, and fasten it to the terminal.
11. Replace the left side panel.
12. Close the boiler drain cock.
13. Close front door and then open the water tap.
14. Turn ON (|) ELB.
15. The display on the control panel displays the standby screen.
16. Press the POWER key while holding down the ION EXCHANGED WATER key and the
DISTILLED WATER key. Calibration begins (P.29)
(Temperature sensor is embedded in each heater. Calibration is to store temperature of the
sensors under normal operating conditions in the internal controller as a reference temperature.
When heater temperature exceeds this reference temperature by 20 °C or more, an alarm will be
raised.
17. A message is displayed on the message screen of the control panel until calibration completes.
18. After calibrating for about five minutes, unit automatically begins normal operation.