CAIRE HELiOS Plus Technical & Service Manual page 16

VII 1
Saturation Principles
If the saturation pressure of the liquid in the portable is greater than 1.93 bar (28 psi) the following symptoms may occur:
• Increased product loss and evaporation rate
• Decreased durations
• High flow rates
• Continuous flow on demand settings
• Venting from relief valves
• Relief valves frozen open
If the saturation pressure of the liquid in the portable is lower than 1.2 bar (18 psi) the following symptoms may occur:
• Decreased evaporation rates
• Low flow rates
• No oxygen flow
• Portable will not fill
The saturation pressure of the HELiOS portable will be equal to the saturation pressure of the reservoir it was filled from. These prob-
lems can be prevented by always ensuring that the reservoir is filled according to its respective service manual.
HELiOS Portables Technical Service Manual • PN 20562190 Rev E
15