Evap Inflow Check Valve Test - GE Datex-Ohmeda Aisys Carestation Reference Manual

Aisys

7.13 eVap Inflow Check Valve Test

Test Equipment
Test Procedure
Note
7-100
• Certifier 4070 or equivalent low-pressure measurement device
(±1% of reading or better accurate)
• M-Gas/E-Gas Calibration Gas
with Calibration Regulator (755530-HEL or M1006864)
Note: If using the M1006864 calibration regulator, the tubing must be pushed on the
hose barb past the bleed hole (bleed hole must be occluded) for the test to function
correctly.
• ADU Test Cassette (8500006)
• Various tubing and Tee fittings (locally sourced)
• PC Service Application and Serial Cable (Section 10.1.1)
• Gilmont Flow Restrictor (6027-0000-126) or equivalent adjustable flow restrictor
1. Move the dashboard forward to the service position or remove rear cover to access
the eVap.
2. Connect and establish communication between the Aisys and the PC Service
Application.
3. Insert the ADU Test Cassette in the eVap bay.
4. In Vaporizer Schematic, set the following valves to the following settings:
• Inflow valve to "On"
• Outflow valve to "On"
• Scavenging valve to "Off"
• Prop Flow Valve DAC Value to "65534"
• Cassette Power to "Off"
• Zero Valves Auto box checked
Ensure Outflow meter reading is zero. If non-zero, wait for the system to perform an
Auto-zero cycle. When the eVap auto-zeros, an audible click can be heard and the LED
(CR15) next to the zero valve connector temporally illuminates.
5. Connect the Calibration Gas Regulator
output (without "Y" piece adapter) to the
ADU Test Cassette port labeled "Cassette
pressure calibration" as illustrated. Open
the calibration regulator (on the non-
adjustable) or set the regulator to
approximately 3 PSI (on the adjustable
regulator) and adjust the inline restrictor
until the eVap Outflow flow reading on the
PC Application reads 5ml (±1 ml). Re-
adjustment of the regulator may be
necessary after flow is established.
6. On the Gas Delivery Schematic:
• Set the Total Flow to 15.00 LPM.
• Then set the Total Flow to 0.00 LPM.
• Then set the Total Flow to 15.00 LPM.
• Then set the Total Flow to 0.20 LPM.
04/08 M1046983