¶ Heating Fans (Blower)
There are 2 heating fans under heating chamber. The front one rotates clockwise, the rear one rotates anticlockwise. So, the PN of motor and fan blade of these 2 heating blowers are different. Don’t mess them up when install them.
¶ Steps:
a. Power machine off, and unplug the main power cable. Remove the left and back cover with knob wrench (Figure 1.4-1).
b. Remove 2 covers of raceway. Loosen the screws and remove the power cables (red highlighted in Figure 4.2-1) of the 2 motors from K3-Relay.
c. Unplug the cables connectors (blue highlighted in Figure 4.2-1) in 2 capacities.
d. Find the ground line connector (check the label on cables) in the terminal of ground line, and take it off. (Yellow highlighted in Figure 4.2-1)
e. Take these cables out of raceway. Pull filament chamber out completely to get enough space.
f. The 2 motor assemblies are above the chiller. Remove 6 screws in two sides of the mount and take the assembly off. Figure 4.2-2
g. Remove the nut with 14mm socket wrench (red highlighted in Figure 4.2-3), and loosen the set screw (blue highlighted in Figure 4.2-3). Then, separate the motor and fan blade.
h. Remove 4 nuts with 7mm socket wrench, and take the motor off the mount. Then, do the replacement as needed. Figure 4.2-4
i. If the 2 motors were going to be replaced at the same time, do not mess up the 2 motors and their fan blade. Their rotation directions are different.