Brookfield Bath, Model TC-602 - Manual (Page 30)

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cursor will automatically advance to the next field in the password entry display. Once the final
character is entered, rotate the knob and the following Calibration screen(s) will be available.
On Programmable Controllers, the Calibration User – External Probe Calibration screen will also
appear if an external probe is connected to the Controller.
To perform a calibration, go to the appropriate Calibration User screen and press the Select/Set Knob.
Rotate the Select/Set Knob until the offset value equals the difference between the probe temperature
reading and the reference temperature probe. Press the Select/Set Knob to accept the offset value.
NOTE: Allow the temperature reading at the probe to stabilize before making adjustments.
NOTE: The Calibration User display(s) remains available only while Controller power is On. If the
Controller in placed in Standby or main power is disrupted, the display(s) will have to be re-enabled
by entering the Calibration access password.
$0'/(+!P!>!8%(,7-$)3(('/+1!
P?! +/'!\/--![('!"#$%&'$!^+(!3$&'=!0((-/+1=!(%!#,6#/+1_!
• Check that the power cord is plugged in to an operating electrical outlet.
• Check that the Circuit Breaker/Power Switch is ON.
• Check that the Controller Power Switch is ON.
• Check that the Safety Set temperature is higher than the control temperature set point.
• Reset Safety Set by pressing the Safety Set Reset button and then the ESC Button.
P?! [(!5,6#/+1!
• Check the fluid level of the bath to be sure the pump head is covered with fluid.
• Check the pump impeller for obstructions (it should turn freely).
P?! -(4!(%!+),99/0/$+'!5,6#/+1!
• Check for low line voltage, particularly when the heater is on.
• Check for too small of a hose diameter (closed loop applications).
• Check for too high of a fluid viscosity.
P?L! [(!Q$&'/+1!
• Verify that the unit is pumping properly.
• If the heat light is not lit, check the control temperature set point and bath temperature to verify
that heating is required.
• Verify that the liquid in the bath covers the heater coils.
• Check that the Limit High value has not been exceeded (Warning message appears on the display).
P?M! +),99/0/$+'!Q$&'/+1!
• Verify that the unit is pumping properly.
• Check for proper line voltage.
• Check for excessive external cooling load on unit.
• At higher temperatures, insufficient heating could be due to excessive heat loss from tanks, hoses,
or vapor from the tank.
• Check that the heat demand from connected devices or experiments does not exceed the heating
capabilities of the unit.
• Allow sufficient time for bath temperature to stabilize when changes in heat load or set point are made.