22
Tri-Tech
Medical Inc.
Gene
sys
®
Manifold Systems
Trouble-Shooting Guide
Note: trouble-shooting and repairs should be done by qualified personnel only.
Symptom
Loss of Cylinder Contents
Both banks feeding
Changeover occurs, reserve
in use alarm is triggered
and then clears
Probable Cause
Leaking header/pigtail
connection
Leaking intermediate check
valve
Leaking solenoid valve
Model CC – primary
regulator(s) out of adjustment
Model LL – inlet pressure to
control cabinet is too low
Model LL – portable bulk
venting
Model LL – gas flowing thru
economizer circuit
Manifold is unable to support
required flow
Model LL – portable bulk
vessel(s) are unable to support
required flow
Remedy or Check
Tighten fitting or re-tape with Oxygen safe
Teflon tape (if npt fitting) and tighten.
Replace check valve
Replace solenoid valve
Set delivery pressure to specifications per
chart on page 27
Verify that minimum inlet pressure
requirements are met per chart on page 27
Gas usage not high enough to justify
portable bulk reserve
This is normal when reserve bank pressure
is 50 psig greater than service bank
pressure – no correction needed to
manifold control cabinet. May consider
reducing the number of liquid vessels on
each bank if reserve bank is more than
35% depleted at time it is placed in service
“In Use”
If gas is flowing thru economizer when the
reserve bank pressure is not 50 psig greater
than service bank pressure – the
economizer check valve needs to be
replaced.
Increase manifold flow capacity (call
factory for assistance)
Increase bank size.
If using two or more portable bulk vessels
per bank currently, connect pigtail(s) (no
check valve) from vent to vent of all
vessels on the same bank and open the
vent valves. This will equalize the head
pressure of the vessels and utilize the
combined vaporization capacity – not just
the capacity of the vessel with the highest
delivery pressure set point.
