Sun Electronic Systems Environmental Chamber EC16HA

Unplug the chamber from the line voltage

Turn off the expectorant supply and disconnect supply hose from the chamber

Ensure components carrying the expectorant have reached ambient temperature

Locate and follow the two wires attached to the cool module

Disconnect the two wires from the I/O board terminal block

Record the positions of the two wires for reconnection

Acknowledge that the controller no longer incorporates a replaceable RAM Battery. Time and programming are held through a Super Cap and will remain in memory for approximately one week without power.

Confirm that this procedure applies only to the mechanical fail-safe installed on all models except the Model EC1.3W.

If the electronic failsafe on the EC1.3W needs service, contact Sun Electronic Systems.

Unplug the chamber from the line voltage.

Turn off the expectorant supply and disconnect the expectorant supply hose from the chamber.

Ensure that the heating elements and the interior of the chamber have reached ambient temperature.

Acknowledge that the controller no longer incorporates a replaceable RAM Battery. Time and programming are held through a Super Cap and will remain in memory for approximately one week without power.

Unplug the chamber from the line voltage.

Turn off the expectorant supply and disconnect expectorant supply hose from the chamber.

Ensure that the heating elements and the interior of the chamber have reached ambient temperature.

Remove the (3) 6-32 screws and the (4) 8-32 screws located around the blower air intake on the rear wall of the interior of the test chamber.

Remove the (2) 6-32 screws located on the ceiling of the test chamber and the air baffle.

Unplug the chamber from the line voltage.

Turn off the expectorant supply and disconnect expectorant supply hose from the chamber.

Ensure that the heating elements and the interior of the chamber have reached ambient temperature.

Remove Temperature Controller Section

Follow the steps required to remove the temperature controller section as described earlier.

Remove the (3) 6-32 screws and the (4) 8-32 screws located around the blower air intake on the rear wall of the interior of the test chamber.

Unplug the chamber from the line voltage

Turn off the expectorant supply

Disconnect expectorant supply hose from the chamber

Ensure all components of the chamber have reached ambient temperature

Position the chamber on its left side as viewed from the front

Remove the 6-32 screws from the bottom of the chamber/control section intersection

Remove the 6-32 screws from the top of the chamber/control section intersection