4-33. CURBSIDE EXHAUST DAMPER MOTOR.
This task consists of:
General Mechanics Tool Kit, (Appendix B, Section III, Item 1)
Stool and Bracket Removed (Paragraph 4-40)
General Safety Instructions
Before performing any maintenance actions on electrical equipment, ensure all
electrical power has been turned off. Failure to comply with this warning may
result in serious injury or death.
Remove Curbside Exhaust Damper Motor. See Figure 4-21.
Inside laboratory, remove drawers P3 and P4 to gain access to mounting hardware.
Remove nine screws (1), lockwashers (2) and housing (3) covering damper housing (4). Discard lockwashers.
Remove cover from electrical junction box (5) located on bottom of motor (6). Tag and disconnect motor leads and
Remove six screws (8), washers (9), lockwashers (10), nuts (11), spacers (12), and damper assembly (13) with
motor (6). Discard lockwashers.
Install Curbside Exhaust Damper Motor. See Figure 4-21.
Install damper assembly (13) with motor (6) and secure with six screws (8), lockwashers (9), washers (10), nuts (11),
and spacers (12).
Connect conduit (7) and motor leads as tagged to electrical junction box (5). Remove tags and install cover.
Install housing (3) and secure with nine screws (1) and lockwashers (2).
Install drawers P3 and P4.
Install stool and bracket (paragraph 4-40).