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(5) Set the solenoid valve for the spray to ON (open).
From the operation screen, select "Main screen → Service →MC func →MC mainte →Fan and Spray check",
and set the spray of "System A (or B)" to ON.
(6) When water of all modules are completely drained, set the solenoid valve for the spray to OFF
(close).
Cautions
This method can only drain water from the spray inside each module.
As shown in "Pipe example", water drain valves (procured locally) also need to be provided in the
collecting pipe to each module. Be sure to use these valves to drain water.
(5) Set to ON (open).
(6) Set to OFF (close).
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