Table 2-1. Unit Preventive Maintenance Checks and Services (Continued)
M - Monthly
S - Semiannually
A - Annually
Item to be Inspected
EXTRACTOR BRAKE AND DRIVE TRAIN
a. During operation observe for any unusual noise or
vibration. Check for slipping belts.
b. Check drive belt (1) for fraying, wear, and improper
c. Check pulleys (2) for breaks, cracks, and loose
Pulley(s) are broken
d. Check electric motor (3) for signs of overheating,
obstructions to ventilation, and loose mounting.
e. Check brake during operation (should slow load to a
Brake fails to
stop in 30 seconds or less).