5.2
Reservoir Liquid Level
Fill the reservoir with the appropriate bath fluid. On Circulating Baths, the liquid level should be
sufficient to cover the heating coils, pump, over-temperature sensor, and at least one inch (25mm) of
the temperature sensor. On Immersion Circulators, the liquid level should be sufficient to fully
immerse the heater coils, over-temperature sensor, and pump outlet nozzle.
5.3
Power
An IEC power cord is provided with the Circulator. This power cord should be plugged into the IEC
receptacle on the rear of the Controller and then plugged into a properly grounded outlet. Make sure
that the power outlet is the same voltage and frequency indicated on the identification label on the
back of the Controller.
The use of an extension cord is not recommended. However, if one is necessary, it must be properly
grounded and capable of handling the total wattage of the unit. The extension cord must not cause
more than a 10% drop in voltage to the Circulator.
Once the unit has been connected to an appropriate electrical outlet, place the Circuit
Breaker/Power Switch on the rear of the Controller in the ON position. Four decimal points (….) will
appear on the digital display. DO NOT place the Power Switch on the front of the Controller ON until
the Safety Set has been adjusted to the desired temperature (see 5.4 below).
Indicated Voltage:
Volts/Phase/Frequency
Operational Voltage Range
Phase
Frequency
100/ 1 / 60
90 to 110 Volts
single
60 Hz
100/ 1 / 50
90 to 110 Volts
single
50 Hz
120/ 1 / 60
110 to 130 Volts
single
60 Hz
230/ 1 / 60
208 to 230 Volts
single
60 Hz
240/ 1 / 50
220 to 240 Volts
single
50 Hz
After filling the reservoir with fluid, you must set the Safety Set and the Software High Limit as
well as your desired control set point temperature.
5.4
Setting the Safety Set Set Point
The Safety Set feature automatically disconnects Controller power to the heater and pump in the
event that the reservoir liquid level drops too low or the Controller fails. The Safety Set is user-
adjustable between approximately 40° and 210°C. It should be set at least 5°C higher than the
Software High Limit temperature.
Use a flat blade screwdriver to rotate the Safety Set Indicator Knob to the desired temperature. Do
not force the knob beyond the stops at either end of the temperature value range.
Once the Safety Set temperature has been set, turn power to the Controller ON by pressing the
Power Switch on the front of the Controller. The pump will begin operating, the display will flash the
current temperature set point (tx.xx), the °C LED will light, and the current bath temperature will
appear on this display. Pump speed selection is made using the Pump Speed Selection Switch on
the rear of the Controller (see Section 2.3 or 3.3).
If power is disrupted because the Safety Set temperature was exceeded, place the Circuit
Breaker/Power Switch in the OFF position, press the Safety Set Reset Button, correct the problem
(low liquid level, incorrect Safety Set temperature, etc.), and then restore power.
Activation of the Safety Set during normal operation will display a fault (FLt 3) on the readout.
5.5
Selecting Temperature Units
The control set point and actual bath temperatures may be displayed in either °C or °F. The
factory-default is °C.
To change from °C to °F, place the Circuit Breaker/Power Switch on the rear of the Controller in
the OFF position and then press and hold the P2 Button while turning the power back ON.
