Bird Technologies 8578B150 Series - Manual (Page 28)

Bird 8578 Series RF Load Resistor
16
4. Disconnect the wires from the motor to the power entry module, switch
and terminal strip.
Note:
These are quick disconnects and may be easily detached.
5. Lay the load on its side.
6. Remove the 14 #8 truss head screws from the bottom panel.
7. Remove the bottom panel.
8. Remove the 5 1/4-20 pan head screws and washers that secures the blower
to the blower support bracket.
9. Remove the 3 1/4-20 pan head screws and washers that secure the sup-
ports to the bottom of the blower.
10. Remove the 4 #10-32 screws and washers that secure the blower supports
to the front and rear panels.
11. Remove the supports.
12. Remove the blower from the blower housing.
13. Install the new blower in the load housing.
14. Reverse the procedure to secure the blower into place.
Motor Blower Assembly Replacement, 8578B, 100, and 150 Series
1. Remove and retain the sixteen (16) truss head screws that fasten the right
side panel to the front and back panels.
2. Remove and retain the six (6) truss head screws that fasten the right side
panel to the top and bottom panels then remove the right side panel.
3. Remove and retain the four (4) truss head screws that fasten the left side
panel to the blower assembly support bracket.
4. Lay the 8578B series load down on a flat surface on its left side panel.
5. Remove and retain the remaining eleven truss head screws from the bot-
tom panel and remove the bottom panel.
6. Disconnect the orange, white, red, blue, and black motor wires via the in-
line, quick connect connectors
7. Remove the green/yellow ground wire from the inside of the front panel.
Note:
Retain the hardware for reassembly.
8. Cut the two wire ties that hold the thermal switch wires to the front panel
and other wire assemblies
9. Disconnect the thermal switch wires from the interlock terminal strip.
10. Remove and retain the truss head screws (four per panel) that hold the
front and rear panels to the top blower support bracket.
11. Remove and retain the four truss head screws and other hardware holding
the two lower blower support brackets to the front and rear panels.
12. Remove and retain the truss head screw holding the lower resistor bracket
to the rear panel.
13. Spread the front and rear panels apart enough to clear the blower mount-
ing brackets on the blower assembly and lift it out of the unit.
14. Remove all three blower support brackets from the old blower (by remov-
ing the eight 1/4” pan head screws).
15. Mount the support brackets on the replacement blower assembly and
replace the blower assembly in the unit by reversing the above procedure.