SMC Networks HRSH Series User Manual

HRX-OM-Q026
Chapter 5 Display and Setting of Various Functions
HRSH Series 5.11 Anti-freezing Function
5-29
5.11 Anti-freezing Function
5.11.1 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.
● If the circulating fluid temperature falls down to 3
o
C or less, the pump
starts operation automatically.
● Heat generated by the pump operation warms up the circulating fluid.
When the circulating fluid temperature reaches 5
o
C or higher, the
pump stops operation automatically.
● Repeated automatic operation start and stop of the pump maintains
the circulating fluid temperature to 3
o
C to 3
o
C to prevent the
circulating fluid from being frozen.
When the anti-freezing function is set ON, the [RUN] light blinks every 2
seconds while the pump is in the standby state (while the pump stops
operation). The [RUN] light blinks every 0.3 seconds during the automatic
operation of the pump. The default setting of this function is “OFF”.
This function does not prevent the automatic water fill circuit from being
frozen. Countermeasures against freezing of the automatic water fill circuit
should be taken with the user's equipment.
Note that when the warming up function is ON, the warming up function has
a priority over the anti-freezing function, and the anti-freezing function will
not be activated. (See “5.18 Warming Up Function”)
 This function can be activated only when the power supply is ON
and the thermo-chiller is not operating.
 Fully open the valve or manual bypass valve that is arranged by the
user to make it possible for the circulating fluid to circulate when
the pump starts automatic operation.
 In extremely cold weather, the heat generated by the pump
operation may not be enough to prevent freezing of the circulating
fluid.
 During the automatic operation, the pump does not stop even if the
"RUN/STOP" key is pressed. To stop the pump, turn the power
supply OFF or turn this function OFF.
 This function does not prevent the automatic water fill circuit from
being frozen. Countermeasures against freezing of the automatic
water fill circuit should be taken with the user's equipment.
Keep the power supply ON for this function. This function does not
start when the power is OFF.

SMC Networks HRSH Series Specifications

General

Brand	SMC Networks
Model	HRSH Series
Category	Chiller
Language	English