SECTION 16—TRANSFORMER
56
SECTION 16—TRANSFORMER
Replacing Transformer Assembly
DANGER
To prevent electrical shock, ALWAYS disconnect concentrator from electrical
outlet before servicing.
1. Turn power Off (O) and unplug the unit.
2. Remove cabinet. Refer to Removing Cabinet on page 25.
3. Remove control panel. Refer to Removing Control Panel on page 50.
4. Locate the transformer assembly in the upper left corner on the back of control panel.
5. Unplug the transformer connector from the P.C. board.
6. Remove the two screws that secure transformer to the back of the control panel.
7. Reverse STEPS 5-6 to install new transformer. Torque keps screw to 1.53 N-M ± 0.11
N-M (13.5 ± 1 inch-lbs).
8. Run unit and inspect for leaks. Refer to Leak Test on page 71.
9. If no leaks detected, turn power Off (O) and unplug the unit.
10. Reinstall cabinet. Refer to Removing Cabinet on page 25.
FIGURE 16.1
Replacing Transformer Assembly
Transformer
P.C. Board
Connector
Transformer
Assembly
Keps Screws
Control Panel
P.C. Board
