Specifications

Faults
26
Fault Cause Trouble
shooting
Iced-up valve This is operational
with opened valve.
-
The valve is not
closed completely.
Close the valve (it
thaws).
The valve is leaky. Tighten the
screwings / seat.
If required, rinse /
exchange the
valve.
Safety valve blows
off.
Pressure build-up
valve is open.
Close pressure
build-up valve.
Pressure raising
controller is too
highly adjusted.
Lower adjust the
opening pressure
of the pressure
raising controller.
Filling pressure is
too high.
Decrease the
filling pressure of
the withdrawal
tank.
Pressure build-up
valve is open
Open waste gas
overflow valve.
Level indicator is
defective.
Close shut-off
valves of the level
indicator,
exchange level
indicator.
Frost formation on
the vessel
• at the outer
vessel
Vacuum loss Examination / re-
evacuation by the
manufacturer
• at the bottom
Operational
pressure build-up
-
Positive pressure
relief and seal-off
device released,
vessel extremely
iced-up
Vacuum loss within
the vacuum room
Empty out the
vessel / put it out
of operation
Examination /
repair at the
manufacturer’s
works
7.2 Possible Faults