9 Adjusting and Checking the Leak Sensor
9.1 Adjusting Sensitivity
1) Perform this adjustment with the unit cover, control panel and right door attached.
2) Turn the power ON and wait at least five minutes.
3) Press the [VP] key several times until "CALIBRATION" is displayed.
4) Press the [Func] key, and enter "00000" at "PASSWORD".
5) Press the [Func] key several times until "L-CAL" is displayed.
6) Check that the sensor is dry, and press the [ENTER] key to start origin adjustment.
7) Press the [Func] key until "LEAK THR" is displayed. After checking that the sensor is dry,
close the control panel and right panel, check that the "ActLv" value is between 95 to
105, and note down the value at this time as Ld.
8) Open the right door, drop four drops of water from a syringe onto the detecting part of
the leak sensor, and close the right door.
9) After closing the right door, wait for the "ActLv" value to stabilize, read the "ActLv" value
at this time, and take the value at this time as Lw.
10) Calculate the threshold value by the following formula, and enter this value.
(threshold value) = (Lw – Ld) 0.7 + Ld
Example) When Ld=100 and Lw=150
(threshold value) = (150 - 100) 0.7 + 100 = 135
11) Wipe up water around the detecting part of the leak sensor and allow to dry.
9.2 Checking Operation of the Leak Sensor
1) Press the [VP] key several times until "VALIDATION" is displayed.
2) Press the [Func] key until "LEAK SENSOR TEST" is displayed.
3) Open the right door, drop 1 mL of water from the syringe onto the leak tray 2 cm away to
the left side of the detecting part of the leak sensor, and close the right door.
4) After ten seconds, press the [ENTER] key.
[Judgment] "CHECK GOOD" must be displayed.
* After inspecting the leak sensor, wipe up water around the detecting part of the leak sensor
and allow to dry.
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