American Dryer Corp. MLG-460 - Manual (Page 17)

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c. Load Door Piston Lines
The load door cylinder pneumatic connections are made in the lower heat console section, in the area
behind the pneumatic panel. To connect the 1/4” poly-flo tubing into the corresponding needle valves,
match the number on the line with the number on the needle valve. Insert ALL of the tubing (two [2] on
a 1-Door model, four [4] on a 2-Door model) into their corresponding valves. Give a moderate pull on
ALL of the air lines to make sure that the connection are complete.