Conair Temperature Controller HTR-1

Check for leaks in cooling and process lines

If a leak develops, stop the Thermolator and repair it

Check the unit and the area around it for cleanliness

Remove lint, dust or other obstructions on the unit, especially around air intake areas. Keep the floor around the unit dry

Refill as needed with the specified heat transfer fluid

Sign off on the maintenance check

Warning: This procedure requires trained personnel with PPE!

Test and calibrate the unit’s control systems

Press 'STOP' to shut down the Thermolator

Disconnect and lock out main power to the unit, then open the electrical enclosure

Set dip switches 3 and 5 to OFF

Close the electrical enclosure and restore power to the unit

Press any button to display the first test menu

Warning: This procedure requires trained personnel with PPE!

Inspect the fluid in the fluid reservoir

The heaTrac TH-1 and TH-2 models separate the cooling water from the process fluid, which is held in a reservoir inside the unit.

This reservoir should be kept at least three-quarters full of the process fluid.

Check the fluid level in the reservoir using the sight glass on the back of the Thermolator.

Remove the top panel of the Thermolator

Locate the reservoir near the top of the unit

Warning: This maintenance check requires trained personnel with PPE!

Has there been a change in process variables?

If there has been a change in process variables, perform an Auto Tune.

Describe any issues encountered during the Auto Tune.

Sign off on the temperature controller maintenance

Warning: Calibration should be performed annually or when a new thermocouple is installed.

Did you press any button to display the first test menu?

Select the Calibration Mode menu.

Did you press and hold the Setpoint key for 3 seconds until the controller indicates “SC.L” in the Actual display?

Did you press and release the Setpoint key to exit the current calibration and start the next one?

Apply the appropriate temperature to the control input using the thermocouple calibrator.

Did you press the up ▲ key to begin calibrating?