Safety features
3-2
Safety
・
alarm features
This product is equipped with the following safety features and alarm features.
If you face any trouble, please refer to “Troubleshooting" on page 24 and follow the instruction.
7
Safety device
Operation
Reasons why the device works.
Residual current
device
Power is turned off.
・
Electric leakage hazard occurs, or excess current
flows.
High-pressure
switch for
refrigeration unit
Pressure rises abnormally while
the refrigeration unit is operated,
and alarm LED lights up, which
stop running refrigeration unit.
・
Ambient temperature exceeds 40
℃
.
・
Heat load was too heavy for cooling capability,
which made the temperature in the bath rise.
・
Dirt adheres to air filter.
・
Fan for refrigeration unit does not work.
Protection circuit
for refrigeration
unit’s over load
Refrigeration unit operates with
over loaded (over heated),
which made Alarm LED light up
and stop refrigeration unit.
・
Refrigeration unit started up with over loaded.
・
Power and voltage variation exceeds the
rated value
（±
10
％）
.
・
Ambient temperature exceeds 40
℃
.
・
Heat load was too heavy for cooling capability,
which made the temperature in the bath rise.
・
Dirt adheres to air filter.
・
Fan for refrigeration unit does not work.
Thermal protector
for circulation
pump
Circulation pump performs over
heat operation and stops
operation.
（
Recovers when the pump is
cooled down.
）
Over heat operation of circulation pump
・
Circulation liquid has high viscosity.
・
Foreign substance is sucked in.
・
Ambient temperature exceeds 40
℃
.
・
Piping resistance is high.
（
Valve is closed and etc.
）
Self-diagnosis
function for
temperature
controller
Temperature controller gets in
Abnormal status, which made
alarm light up and stopped all
the controls.
The device recovers naturally if
the trouble can be sorted out.
・
Temperature controller is in abnormal status
because of noise and etc.
・
Ambient temperature exceeds 40
℃
.
