TM 10-6640-239-13
4-69
4-31. MECHANICAL ROOM PURGE EXHAUST DAMPER MOTOR.
This task consists of:
a.
Remove
b.
Install
INITIAL SET-UP
Tools Required
General Mechanics Tool Kit, (Appendix B, Section III, Item 1)
Equipment Condition
Air Tank Removed (Paragraph 4-35)
Materials/Parts Required
Lockwasher, (15)
General Safety Instructions
WARNING
ELECTRICAL SHOCK
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
Remove Mechanical Room Exhaust Damper Motor. See Figure 4-20.
a.
Remove nine screws (1), lockwashers (2), and housing (3) covering damper housing (4). Discard lockwashers.
b. Remove cover from electrical junction box (5) located on bottom of motor (6). Tag and disconnect motor leads and
conduit (7).
c.
Remove six screws (8), washers (9), lockwashers (10), nuts (11), spacers (12), and damper assembly (13) with
motor (6). Discard lockwashers.
INSTALL
Install Mechanical Room Exhaust Damper Motor. See Figure 4-20.
a.
Install damper assembly (13) with motor (6) and secure with six screws (8), lockwashers (9), washers (10), nuts (11),
and spacers (12).
b.
Connect conduit (7) and motor leads as tagged to electrical junction box (5). Remove tags and install cover.
c.
Install housing (3) and secure with nine screws (1) and lockwashers (2).
d.
Install air tank (paragraph 4-35).
e.
Run an operational test to check damper motor.
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