Conair Thermolator TW-S User Manual page 48

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S t e p 3 – In i t i a l Un it Oper at i on
Enter the set point temperature. Refer to the Control Panel Operation section for further
information.
Start the unit by pressing the Start button on the control panel. Pressing the Start button
enables the microprocessor control functions, initiates an Auto-vent sequence, and turns
on the Run indicating light which is green when on.
The Auto Vent sequence removes air that may have separated out from the water or been
entrapped in the water circuit for some reason. Air in the system can lead to improper
operation and premature heater failure. When initiated, the Auto Vent sequence opens the
cooling valve for 30 seconds to allow air to escape. This allows the majority of the air
to escape from the system. For further air purging, the Auto Vent sequence energizes the
pump for 30 seconds while the cooling valve is open to remove any remaining air from
the system. While in the vent sequence, the Pump and Cool lights will flash. Once the
Auto Vent sequence is complete, the cooling valve is closed, the pump remains energized,
and normal operation initiates.
Check the rotation of the pump by visually confirming the motor shaft rotation matches
the directional arrow sticker on the motor case. If the pump is running backwards, switch
two of the main power leads, after shutting off the disconnect switch.
The unit is now ready for service.
4-12 I O p e r a t i o n