Preventive Maintenance Checks and Services - Cont.
Table 2-1.
A - Annually
S - Semiannually
Q - Quarterly
M - Monthly
W - Weekly
D - Daily
Items To Be
Interval
Item
Procedures
Inspected/
No.
D
W
M
Q
S
A
Serviced
CONTROLS SYSTEMS - CONT
q
(d)
Check all operating pressures for normal
Control Sub-
47
settings.
systems -
Cont
(e)
Check all system components for cleanliness.
Exercise care to ensure that excessive dust,
dirt, and foreign objects are not allowed to
build up around and/or on any system
components.
(f)
Turn the system air off at the air prep unit
shut-off valve. After all system air has
bled out, remove the filter unit bowl, drain
it, wipe it clean, inspect the filter
element, and install the bowl. Be sure the
auto drain float (if used) is positioned
properly and lock ring is in locked position.
Slowly turn on air to prevent system shock.
q
Cleaning/Lubrication.
b.
(1) Turn control system air off at the air prep unit
and wait for pressure to bleed off completely
before proceeding.
(2) Disconnect the component to be served and remove
it from its installation. Plug or cap the air line
connection removed from the component to prevent
foreign objects from entering air lines.