Table 7-2. Preventive Maintenance Checks and Services for Compressed Air System (Continued)
Q - Quarterly
S - Semiannually
A - Annually
CHECK FOR AND HAVE
IS NOT READY/
REPAIRED OR ADJUSTED
B D A D W M Q S A
m. Air filter 2 (oil removal filter). I air station
6 fails air quality check and for semian-
nual maintenance services, perform
1) Shut down air compressor system.
2) Redtag power panel 1 circuit breaker
3P5 indicating, 'WARNING - DO NOT
ACTIVATE. REPAIRS BEING
3) Without using a wrench, manually
unscrew oil removal filter bowl ring
nut attaching metal bowl to filter
head. Remove bawl ring nut, metal
bowl, and bowl O-ring.
4) Unscrew hex nut and remove rod 0-
ring gasket, filter element, and gasket
O-ring. Rod/element screw should
remain attached to filter head. If rod/
element screw unscrews from filter
head, screw it back into filter head.
5) Replace filter element (CAGEC 31408,
P/N CKF-507). If gasket O-ring and
rod O-ring gasket are worn or dam-
aged, replace them.
6) Place gasket O-ring on top of new
filter element and slide element over
rod/element screw. Hold in place by
hand and install rod O-ring gasket
over rod/element screw. Screw on
hex nut. Before tightening nut, check
that filter element is squarely set
against filter head. Then tighten hex
nut hand tight.
7) Clean metal bowl with warm soapy
water, rinse, and dry with lint-free
Bowl O-rlng must be replaced dry, without
any silicone lubricant.