Companion Portable Technical Service Manual •
PN 20562220 Rev B
25
Companion P
or
tables
Troubleshooting & Repair Procedures
XI
Table 5 below provides troubleshooting procedures for the Companion Portables. This guide is not all-inclusive but is intended to
serve as a general outline for solving operational problems. The table describes symptoms, identifies probable causes, and suggests
corrective actions.
When more than one probable cause is identified, the causes are listed in order of most likely to least likely reasons for the problem.
Table 8 - Troubleshooting
Symptom
Probable Cause
Corrective Action
1) Unable to start fill or ex-
cessively long fill times
a) QDV not properly engaged on
the reservoir
Make sure the QDV on the portable and reservoir are properly
aligned and ensure that a downward force is being applied to the
portable.
b) Reservoir is empty
Swap or re-fill the reservoir
c) Vent valve not open
Ensure that the vent valve lever is fully in the open position.
The lever must be open to begin a fill.
d) FCV is open
Be sure that the FCV knob is in the off (“0”) position. If the
valve is open, fill times can increase.
e) Reservoir saturation pressure is
too low
Swap reservoirs or allow the reservoir time to stabilize and
build pressure
f) Vent valve is obstructed
Inspect the vent tubes for blockages. Clean by blowing out with
compressed gas or replace parts if necessary.
g) Leak in the system
Check the portable for leaks (RP2) and repair if needed.
h) QDV damaged or faulty
Inspect the QDV and be sure the poppet opens properly and
smoothly. If necessary, replace the QDV (RP17)
i) Faulty vent valve
Replace the vent valve (RP16)
2) Liquid leaks from the
coupled QDVs during
the fill
a) Worn or damaged lip seal
Replace the QDV lip seal (RP18)
3) Unable to disconnect the
poratble from the reser-
voir
a) Pop-off assembly not being
utilized
Ensure that the pop-off assembly on the reservoir is being used.
Do not use force to separate the QDVs.
b) QDVs are frozen together
Leave the units coupled with the vent valve closed and let them
sit until they warm up enough to disconnect. Always ensure that
male and female QDV’s are cleaned and dried prior to each fill.
4) Liquid leaks from the
QDV poppet after filling
a) Ice crystal preventing the QDV
from closing properly.
Engage and disengage the portable onto the reservoir several
times to dislodge the ice crystal. Always be sure that the male
and female QDVs are wiped clean and dry before filling.
b) Dirty or damaged QDV poppet Replace the QDV (RP17)
