PV
SV
Flashing
Flashing
Lights up
Alarm code
Accumulated
time
Displayed item
PV PV
Convenient functions (Refer to the Operation Manual for details.)
Ex. SE.02 “ON timer”
Unit conversion function
Temperature and pressure units can be
changed.
Timer operation function
Timer for ON and OFF can be set in
units of 0.5 h up to 99.5 h.
Ex.) Can set to stop on Saturday and Sunday
and restart on Monday morning.
Timer
The time remaining can be checked.
Power failure auto-restart function
Automatic restart from stoppage due to pow-
er failure, etc. is possible without pressing the
key and remote operation.
Anti-freezing operation function
If the temperature approaches freezing point,
e.g. in winter at night, the pump operates au-
tomatically and the heat generated by the
pump warms the circulating fluid, preventing
freezing.
Key-lock function
Can be set in advance to protect the set val-
ues from being changed by pressing keys by
mistake.
Function to output a signal for
completion of preparation
Notifies by communication when the temper-
ature reaches the pre-set temperature range.
Independent operation of the pump
The pump can be operated independently
while chiller is powered off. You can check
piping leak and remove the air.
Orange
indicator
lights up.
Temperature unit
Pressure unit
For details, refer to page 146.
Self diagnosis and check display
Display of individual alarm codes
Operation is monitored all the time by the integrated sensor.
Should any error occur, the self diagnosis result is displayed by the applicable alarm code.
This makes it easier to identify the cause of the alarm.
Can be used before requesting service.
Changeable alarm set values
Setting item Set value
Circulating fluid discharge temperature rise
Circulating fluid discharge temperature drop
Circulating fluid discharge pressure rise
Circulating fluid discharge pressure drop
5 to 55°C
1 to 39°C
0.05 to 0.6 MPa
0.05 to 0.6 MPa
Ex.
AL01 “Low level in tank”
Alarm codes notify of checking times.
Notifies when to check the pump and fan motor.
Helpful for facility maintenance.
Ex. AL28 “Pump maintenance”
Check display
The internal temperature, pressure and
operating time of the product are displayed.
Ex. drv. “Accumulated operating time”
Displayed item
Circulating fluid outlet temperature
Circulating fluid return temperature
Circulating fluid flow rate∗1
Compressor gas temperature
Circulating fluid outlet pressure
Compressor gas discharge pressure
Compressor gas return pressure
Accumulated operating time
Accumulated operating time of pump
Accumulated operating time of fan
∗2
Accumulated operating time of compressor
Accumulated operation time of dustproof filter
∗2
∗1 This is not measurement value.
Use it for reference.
∗2 These are displayed only for
air-cooled refrigeration.
∗The fan motor is not used in water-cooled refrigeration.
