Return Pressure Sensor Not Zero; Return Valve Bad - Cannot Do Air Remove - Gambro Cobe Spectra Essentials Manual

General Alarms and Troubleshooting

RETURN PRESSURE SENSOR NOT ZERO!

RETURN PRESSURE SENSOR NOT ZERO!
Unload sensor.
Alarm LED is red. Pumps stop. Return line valve closes.
Probable Cause
Fluid or pressure in return pressure sensor before pumps
are loaded
Return pressure sensor malfunction
RETURN VALVE BAD — CANNOT DO AIR REMOVE!
See "Invalid Valve Position Changes" on page 12-6.
12-60
CONTINUE
Ensure the disposable tubing set is dry and the return pressure sensor is loaded correctly. Press CONTINUE.
If the test fails, see "Repositioning the Return Pressure Sensor Diaphragm" on page 11-10 for instructions on
repositioning the diaphragm and reloading the return pressure sensor.
Note the alarm message. Discontinue the procedure. Notify a qualified service technician of the alarm
message.
To retry the return pressure sensor test, press CONTINUE.
This alarm occurs only during pump loading when the return pressure
sensor detects too little or too much pressure.
Action
®
COBE Spectra™ Apheresis System • Essentials Guide