DOC1001322
Chapter 7 Control, Inspection and Cleaning
7.2 Inspection and Cleaning
HRL Series
7.2.4 Inspection during winter season
Anti-freezing function
This function prevents freezing of the circulating fluid while the product stops
operation in the winter season with heat generated by automatically operating the
pump. When there is a possibility of the circulating fluid freezing due to changes
in the installation or operating environment (e.g. season, weather), set this
function ON in advance.
For more details, refer to “KEY-LOCK, START-UP operating method, ANTI-
FREEZING and WARMING-UP” (P.5-42).
Warming up function
This function maintains the circulating fluid temperature to the set warming-up
temperature with heat generated by automatically operating the pump in the
winter season or at night.
When the time required for increasing the temperature of the circulating fluid
needs to be shortened at startup, set this function ON in advance.
For more details, refer to “KEY-LOCK, START-UP operating method, ANTI-
FREEZING and WARMING-UP” (P.5-42).
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