Chapter 4: Parameters Setting, Service and Preventive Maintenance
4-16
f. Pressure Transducer
WARNING!
Do not apply excessive pressure to the pressure chamber or pressure
transducer. The pressure transducer is a precision electromechanical
device and can be damaged with excessive force.
Do not use the
system if the pressure transducer is damaged
.
i. Inspect the pressure transducer for damage. Make certain the
surface
of the transducer is not cut or punctured. The pressure transducer
must be replaced if the surface is damaged.
ii. Make certain the pressure chamber is properly installed (see Chapter
2: Installing the Disposable) and the flow path is not blocked.
iii. Make certain the fluid is warm (37°C - 42°C). The pressure chamber of
the disposable is less compliant when it is at room temperature.
Verification must be performed with a warm disposable.
iv. In the Hardware mode: close the door, the bag clamps and block the
air vent on top of the reservoir chamber. Disconnect the patient line
and connect the pressure source to the LUER fitting at the patient line
port of the disposable set and apply pressure while monitoring the
amount of pressure with a manometer.
v. Verify the accuracy of the pressure transducer. Apply 300 mmHg into
the disposable. The pressure status line should read 300 mmHg (
±
50
mmHg). Repeat the same pressure verification for 200 and 100 mmHg.
