18
Lib
er
at
ors
Maintenance
(Schedule B, Continuous)
IX
Schedule B – Continuous
A. Introduction
Continuous maintenance is a set of tests and inspections done pe-
riodically to ensure equipment is functioning properly. It can be
performed by drivers or other personnel while the equipment is
in service.
1. If a unit fails a given test, it should be taken out of service
and sent to the Repair Center/Department for further in-
spection.
2. Schedule – Scheduled intervals should be determined by the
equipment service provider.
B. Pre Fill Procedure
1. Visually inspect for:
a. Broken shrouds or shroud components
b. QDV deformation
c. Level indicator functionality
d. Presence of all required labels
e. Cryogenic reservoir damage (dents, dings)
f.
If LOX is still present in the unit, inspect for heavy frost
or condensation on the exterior of the unit, which would in-
dicate poor vacuum.
g. Visible dirt or contaminants inside and outside of the
upper shroud, as well as inside and outside of the condensate
collector.
h. Vent valve functionality (all parts are present and the
valve functions as intended)
C.
Post-Fill Procedure
1.
Visually verify:
a.
QDV poppet is closed and not leaking
b.
Vent valve is not leaking
c.
No heavy frost or condensation is present on the exterior
of the vessel of the reservoir
d.
Liquid level indicator
is showing full after filling
NOTE:
When inspecting
a Side-Fill
QDV, be sure to check
the lip seal for damage.
Liberators Technical Service Manual • PN 13350704 Rev
K
