Test Cylinder Regulators - GE 9100c Technical Reference Manual

5.1.2 Test Cylinder
Regulators
Test A
M1207026
M1207027
Reproduced from the electronic master in MATRIX
There are two variations of the test procedure for the cylinder
regulators:
• Test A — For cylinder regulators that supply drive gas to the
ventilator.
• Test B — For all gases not used to supply drive gas to the
ventilator.
For cylinder regulators that supply drive gas to the ventilator (O
or Air):
Under low flow conditions, the output pressure of a properly adjusted/
functioning regulator should fall within specifications listed in step 3.
Under high flow conditions, the output pressure should not drop
below the specifications in step 6.
1. Remove the bellows assembly.
2. Slowly open the cylinder valve.
3. Low Flow Test: Set the fresh gas or O
• Close the cylinder valve and allow the pressure to decay to
2068 kPa (300 psi) as indicated on the cylinder gauge (upper
limit of the red band). The flow may be temporarily increased
to facilitate the decay.
• At the time that the cylinder pressure reaches 2068 kPa (300
psi), close the O
• Within one minute, the test device must stabilize between
310 - 341 kPa (45.0 - 49.5 psi).
— If the test device pressure does not stabilize within one
minute, replace the cylinder supply.
— If the test device pressure stabilizes within one minute, ut
the readings are not within specifications, readjust the
regulator (Section 5.1.3).
4. Slowly open the cylinder valve.
5. Set the system switch to On and enter the Service Mode.
6. Follow the menu structure outlined below to reach the adjustment
for the inspiratory flow valve. Select and confirm at each step.
• "Diagnostic Tests/Tools" - "Valves - Test Tool"
• "Set Inspiratory Flow Valve"
7. High Flow Test: Rotate adjustment knob clockwise to obtain 65
(L/min):
• While watching the test device press the knob to confirm.
• After 2 seconds, select "Go to Service Mode" and press
confirm to stop the gas flow.
• The minimum test device reading observed must be greater
than 207 kPa (30 psi).Repeat this step three times.
— If the test device reading under "high flow" conditions is
less than specified, readjust the regulator per the
procedure in Section 5.1.3; however, set the regulated
pressure higher by the difference you noted in this step
plus 7 kPa (1 psi). This adjusts the "low flow" regulated
output to the high side of the specification so that the
004 MANUAL−DOC, Technical Reference Manual, Technical Reference Manual for 9100c, English
flow to 0.1 L/min.
2
or Air flow control valve.
2
5 Calibration
2
5-3