![background image](http://html1.mh-extra.com/html/caire/companion-c1000/companion-c1000_technical-and-service-manual_3345839027.webp)
1
Companion Portable Technical Service Manual •
PN 20562220 Rev B
26
Companion P
or
tables
Troubleshooting & Repair Procedures
XI
Table 8
(cont.)
Symptom
Probable Cause
Corrective Action
5)
Liquid leaks from
the vent valve tube/
outlet
a) Vent valve is not fully
closed
Ensure that the vent valve lever is fully in the closed position.
b) The portable has been
transported or laid in an im-
proper operating position
Return the portable to an upright or acceptable operating position and
allow several minutes for stabilization.
c) Vent valve is frozen open Allow the portable to warm until the vent valve can close. After the
warm up, allow up to 60 minutes for the portable to stabilize and build
pressure before operating.
d) Faulty vent valve
Replace the vent valve (RP16)
6)
Excessive venting
from relief valves
(hissing sound)
a) The portable has been
transported or laid in an im-
proper operating position
Return the portable to an upright or acceptable operating position and
allow several minutes for stabilization.
b) Saturation pressure too
high.
Inspect the saturation pressure of the reservoir used for filling. Allow
at least 30 minutes at no flow for the portable to saturate properly.
c) Relief valve frozen open
Allow the portable to warm and thaw. Attempt to re-fill the portable.
d) Faulty relief valve
Test the relief valve (RP9) and replace if necessary (RP10)
e) Partial or complete loss of
vacuum
Conduct the NER test (RP23) and return the unit to CAIRE, Inc. if
necessary.
7)
No Flow
a) Portable is empty
Check the contents indicator/level gauge and fill the portable if
needed.
b) Flow control valve turned
off
Ensure the flow control knob is not in the off (“0”) position.
c) Nasal cannula kinked or
disconnected
Ensure proper nasal cannula functionality and positioning
e) Saturation pressure is too
low
Inspect the saturation pressure of the reservoir used for filling. Allow
at least 30 minutes at no flow for the portable to saturate properly.
f) Leak in the system
Perform a leak check on the plumbing (RP2). Repair leaks as neces-
sary.
g) Relief valve is open
Ensure that there is no venting from the relief valves. If there is refer to
the corrective actions for “Excessive venting from relief valves (hiss-
ing sound)”
h) Vent valve is open
Ensure that there is no venting from the vent valve outlet/tube. If there
is refer to the corrective actions for “Liquid leaks from the vent valve
tube/outlet”
i)
FCV inlet filter is ob-
structed
Clean or replace (RP20) the filter screen.
j)
Blockage in the liquid
withdrawal circuit
Check the warming coils and withdrawal tubes for blockages. Replace
if necessary.
k) FCV Faulty
Replace the FCV (RP20)