Beckman J2-21M - Page 4

Contents
Introduction
Specifications .
Preinstallation Requirements
DESCRIPTION
Drive Unit
Door Operation
Refrigeration System
Temperature Sensing
Speed Control System .
Vacuum System .
Rotor Chamber
Rotors .
OPERATION
Power . .
Key Switch .
Digital Displays
Keyboard.
Rotor .
Speed
Time
Temp
Accel Decel
Comp Adj . . . . .
Prog Recall Prog Save.
Start. ....
Stop. . . .
NORMAL Run Mode o.
PROGRAM LOCK Run Mode .
ZONAL Run Mode . .
TROUBLESHOOTING
Diagnostic Messages .
Other Problems
MAINTENANCE AND INSTALLATION REQUIREMENTS
Cleaning .
Defrosting .
Replacing the Air Filter
Replacing the Drive Belt . o. .
Power Failure: Tripping the Door Lock .
Temperature Calibration . os
Electrical Requirements .
Location Requirements
Supply List .
Warranty for the Model J2-21M Centrifuge .
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