vi 248 Operator’s Manual
Contents
3 Maintaining the System 3-1
Daily Maintenance 3-1
Weekly Maintenance 3-2
Quarterly Maintenance 3-2
Maintenance Schedule 3-3
Six-Monthly Maintenance 3-4
Emptying the Waste Bottle 3-4
Changing the Reagents 3-5
Deproteinizing the Sensors 3-7
Conditioning the Sensors 3-7
Using the Disinfect Routine 3-8
Stopping the 248 System 3-8
Using the Prime Routine 3-9
Checking the Gas Pressure and Changing the Cylinders 3-10
Checking the Gas Flow Rate 3-12
Changing the Pump Tubing, and Cleaning and Lubricating the Rollers 3-13
Refilling or Replacing the Measurement Sensors 3-17
Replacing the Reference Sensor Cassette 3-19
Replacing the Bottle Tubing 3-21
Cleaning or Replacing the Drip Tray 3-22
Replacing the Printer Paper 3-23
Replacing the Probe and Tubing and Probe Housing 3-24
Replacing the Probe Protector 3-28
Replacing the Pre-heater Tube 3-29
Clearing Blockages 3-31
Replacing a Fuse 3-34
Shutting Down the 248 3-35
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