HP 11744195 manual Operation

Operation

Check system functions and your understanding of the system by following these steps with an empty thermal enclosure before installing the product to be tested.

1.Verify that all utilities are on-line before operating equipment. Liquid nitrogen is required for proper cooling. (Empty or low LN2 tanks produce a mixture of liquid and vapor which will not properly cool the chamber.) Proper voltage and phase electrical supply are necessary for full heating capability. These requirements are listed in the Specifications section.

2.With all function switches in OFF position, connect power to the chamber.

3.Be sure chamber enclosure door is closed securely.

4.Turn the Control Power switch to the ON position.

5.Press Reset push-button to enable control circuits.

6.Adjust temperature set points on the temperature controller to achieve desired internal temperature.

￿ Operator Control Switches

The control console has several selector switches and buttons. The switches/buttons are

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5

These switches/buttons provide the following control:

1.Watlow Controller

Controls the internal chamber heating, cooling, circulations fans, air purge and window heaters.

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