Sun Electronic Systems Environmental Chamber EC1A

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

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 around the blower air intake on the rear wall of the interior of the test chamber.

Cooling Module Assembly Replacement

Unplug the chamber from the line voltage

Turn off the expectorant supply

Disconnect supply hose from the chamber

Ensure components carrying the expectorant have reached ambient temperature

Remove the controller chassis as described in 'Temperature controller section removal'

Unplug the chamber from the line voltage

Turn off the expectorant supply

Disconnect expectorant supply hose from the chamber

Ensure heating elements and chamber interior have reached ambient temperature

Remove the (14) or (18) #6 screws from the perimeter of the chamber back plate

Carefully pivot back plate away without stressing line or fuse wiring

Position the chamber for rear access

Turn off the expectorant supply

Remove the expectorant supply hose from the rear of the chamber

Remove any contamination from the filter