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General| Brand | Thermo Scientific |
|---|---|
| Model | 989 |
| Category | Freezer |
| Language | English |
Crucial information for safe and correct installation and operation of the freezer.
Explains the functions of the freezer's control panel elements: keys, displays, and indicators.
Procedures for initial startup and setting operating temperatures.
Instructions for setting high and low temperature alarm thresholds.
Procedure for calibrating the control probe against a reference instrument.
Overview of freezer alarms, delays, and ringback times.
Comprehensive list and explanation of freezer error codes.
Explanation of the BUS system for maintaining chamber temperature during power failures.
Guide to the BUS control panel, fault codes, and configuration.
How to set the BUS set point and test its operation.
Diagram illustrating the cascade refrigeration system.
Detailed schematic for the high-temperature refrigeration stage.
Detailed schematic for the low-temperature refrigeration stage.
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