HRX-OM-X037
Chapter 5 Display and Setting of Various Functions
5.4 Description of the Screen
HRL Series
・KEY-LOCK, START-UP operating method, ANTI-FREEZING and WARMING-UP
1. Following settings can be made on this product:
• KEY-LOCK–––––––––––––– Prevents all operations other than “Run/Stop,” “Change
screen” and “Alarm reset.”
• START-UP operation setting–– Function to restore back to the state prior to power
shutdown, after the power supply is restored, when
power supply had been cut off due to a power
outage.
• ANTI-FREEZING–––––––––– Function to prevent freezing of circulating fluid when
the operation was stopped during winter time by
automatic operation and by heating the circulating
fluid with heat generated by pump. Pump automatic
running and stopping is repeated to prevent freezing
by maintaining circulating fluid temperature at 3ºC to
5ºC.
Pump automatically starts operating if the circulating
fluid temperature drops below 3ºC.
Circulating fluid is heated by the pump power
generated by pump operation. When the circulating
fluid temperature reaches 5ºC or higher, the pump
will stop operating automatically.
• WARMING-UP––––––––––––– Function to maintain the circulating fluid at the
warming-up setting temperature when operation is
stopped during winter time or at night by conducting
automatic operation and heating the circulating fluid
with heat generated by the pump.
Pump automatically continues operating until the
circulating fluid temperature rises up to +2ºC, which
is the warming-up setting temperature.
Pump automatically stops operating when the
circulating fluid temperature rises up to +2ºC which is
the warming-up setting temperature.
Pump automatically restarts operation when the
circulating fluid temperature drops to -2ºC which is
the warming-up set temperature.
The “ANTI-FREEZING” and “WARMING-UP” functions operate when the
power supply is ON and the product operation is stopped.
Fully open the valve or manual by-pass valve that was installed by
the user to let the circulating fluid circulate when the pump
operation automatically starts.