Maintenance and RepaiR
powermax
45
  Operator Manual  5-7
Replacement
1.   Hold the Mylar barrier so that the edge with the 
3notches is on the left and the edge with 4notches is 
on the right.
2.   There is a perforation across the top, about 4.45cm 
(1.75 inches) down from the top edge. If you are 
replacing the Mylar barrier with a new one, you will need 
to fold it along this perforation so that the top edge 
bends away from you.
3.   Position the barrier so that the folded section will cover 
the top of the power board. Slide the barrier into place 
with the bottom edge between the ribs on the base 
and the power board. The notches on each side of the 
barrier should align with the ribs on the inside of the end 
caps.
4.   Being careful not to pinch any of the wires, slide the 
cover back onto the power supply. Make sure that the 
bottom edges are in the tracks and that the slot in the 
top of the cover is aligned with the tab on the front end 
cap so that the louvers in the cover are in front of the 
fan. Position the handle over the holes in the top of the 
cover, then secure the cover with the 2screws.
Three
notches
Cover slot
Tab
Four 
notches
Replace the work lead (CSA and CE)
1.   Turn OFF the power, disconnect the power cord, and disconnect the gas supply.
2.   Use a #2Phillips screwdriver to remove the 2screws from the handle on the top of the power supply. Tip the end 
panels back slightly so that you can get the edges of the handle out from underneath them. Lift the cover off the 
power supply. Remove the Mylar barrier that protects the power board.
3.   Remove the screw from J21 (also labeled “work lead”) on the power board that attaches the lead to the board. Set 
the screw aside.
4.   Gently tilt the front panel away from the power supply. From the inside of the panel, unscrew the nut that secures 
the strain relief to the end cap.