Control macros 137
Autochange
SPFC system supports autochange naturally as the drive starts all the pump.
Autochange functionality in SPFC is similar to autochange function in PFC except
that autochange with auxiliary motor is not applicable for SPFC. See section
Autochange on 128.
In autochange, two pumps meet the flow consumption for long term running and the
3rd pump is reserved for shifting.
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