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
Check receiver safety
valve on all com-
pressors (Barges 1, 2, and 3).
1) Pull up on safety link
on safety valveAir does not
in top of receiver. Air should escape
System MUST NOT be operated without
an operating receiver safety valve. In
continues to run beyond factory set
pressure, this valve reduces receiver
pressure to a sale level.
receiver safety valve. This valve can
not be adjusted or repaired. Replace
(a) Shut down air compressor sys-
(b) Redtag power panel 1 circuit
breaker 3P5 indicating,
"WARNING - DO NOT ACTIVATE.
REPAIRS BEING MADE."
(c) Unscrew safety valve.
(d) Screw in new safety valve (Barge
1 - P/N 9710-5332-00) (Barges 2
and 3 - P/N 91A033175-001)
(e) Start air compressor system.
(f) When receiver pressure gauge
reads at least 100 psi, check
receiver safety valve by pulling
safety link. Air should escape from
receiver thru valve. If not, repeat
above procedures and install
another new safety valve. This
valve is NOT adjustable or
(g) Remove red tag from power panel
1 circuit breaker 3P5.