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4. Turn on DIP SW002-6.
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Then, slowly turn the water vent screw of the two water pumps at the lower part inside the HBC.
(Maximum of two turns)
*
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Water vent screw
(Maximum of two turns)
Water pump (water vent screw position)
Slowly open the strainer inside the HBC (on the maintenance side).
* Note that, if it is opened fast, water may blast out.
Remove the strainer, and clean its inside.
Strainer maintenance
6. Slowly open the strainer on the far side inside the HBC. Remove it in the same way as the other strainer, and clean its inside.
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7. Make sure the strainers are re-installed properly.
Flowchart for debris removal operation (Turn on DIP SW002-1.)
Air 1
Intermittent operation of water pump (20 min)
The operation is performed to discharge air from the water circuits. [Air1]
Air 2
Water supply to all indoor units (20 min)
Debris in the pipe will accumulate into the strainer by supplying water to
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(1) The operation can be forced to stop by turning on DIP SW002-4.
(2) If it is found during any step that air has not been discharged to the desired degree, repeat the air discharge operation from the
beginning.
(3)
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discharge operation from the beginning.
3. Final step
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01_WT09805X01_en.book 20 ページ 2021年11月1日 月曜日 午前8時47分