Terumo 801763, Operator'S Manual, Page: 324 / 359

Additional Information
12-13
Electronic Gas Blender Maintenance
Replace the Oxygen Sensor
Replace the oxygen sensor every 6 months or whenever prompted by the system.
The “Service O2 Sensor” Message
If the oxygen sensor exposure limit is reached, the message ‘Service O2 Sensor’ will
be displayed in the message area of the CCM. A backup analyzer should be used
until the oxygen sensor is replaced by an authorized Terumo Cardiovascular Systems
service provider.
Oxygen Sensor Maintenance
To maximize the life of the oxygen sensor, always disconnect or turn off the gas
supply to the electronic gas blender when the system is not in use as the system will
vent several liters of gas per minute, even when the flow is set to zero using the slider
bar on the CCM or using the local gas flow knob on the front panel.
Flow Meter
Replace or recalibrate the flow meter every 24 months. The flowmeter must be
recalibrated or replaced by an authorized Terumo Cardiovascular Systems service
provider.
Recondition the Gas System
The Electronic Gas Blender must be reconditioned every 24 months. The Electronic
Gas Blender must be returned to an authorized Terumo Cardiovascular Systems
service provider for reconditioning.
Water Trap Maintenance
Drain the water trap (located on the air or 95/5 inlet) after each use if necessary.
Depress the valve on the bottom of the water trap to empty any water.
Replace the water trap filter at least every six months.
1. Depress the valve on the bottom of the water trap and empty any water.
2. Loosen the large center nut and rotate the trap 180°.
3. Pinch clip and remove the metal guard.
4. Unscrew and remove the clear plastic bowl.
5. Unscrew and remove the center core.
6. Remove the filter and covering. Replace the cylindrical filter with a new water trap
filter.
7. Reassemble the water trap, rotate it 180°, and tighten the center nut. Take care
not to use any grease or oil on parts which are exposed to oxygen content gases.
Do not use solvents or cleaning solutions on the polycarbonate bowl. If cracks or
abrasions are found on the bowl, replace it with a new bowl.