Related Manuals for Thermo Electron 902
Summarization of Contents
Section 1 - Installation and Start-up
Freezer Components
Identifies key physical parts of the freezer unit.
Control Panel Keys, Displays and Indicators
Explains the function of each button, display, and indicator.
Operation of the Keypad
Details how to navigate and use the freezer's control panel.
Installing the Freezer
Guides on unit placement, securing, and connecting power sources.
Freezer Start-Up and Settings
Outlines the procedure for initial setup, including temperature and alarm configuration.
Run Mode
Describes the default operating mode and how to view status.
Section 2 - Calibrate
Calibrate Mode
Explains how to calibrate the control probe for accurate temperature readings.
Section 3 - Alarms
Alarms
Lists all alarm types, their delays, ringback times, and relay status.
Wrong Power Alarm
Details the alarm triggered by incorrect voltage application to the freezer.
High Stage System Failure
Explains the alarm for high-stage compressor and fan performance issues.
Probe Failure Alarm
Describes the alarm resulting from faulty temperature or condenser probes.
Voltage Compensation Alarm
Covers alarms related to the freezer's voltage compensation system.
Section 4 - Maintenance
Cleaning the Cabinet Exterior
Instructions for cleaning the outer surfaces of the freezer.
Cleaning the Air Filter
Details the process for cleaning or replacing the air filter.
Cleaning the Condenser
Provides instructions for cleaning the condenser unit.
Defrosting the Chamber
Steps to safely defrost the freezer chamber.
Cleaning the Door Gasket
Procedure for cleaning the door gasket to maintain a proper seal.
Cleaning the Vacuum Relief Port
Explains maintenance of the vacuum relief port to prevent icing.
Replacing the Battery(s)
Step-by-step guide for replacing the freezer's internal batteries.
Preparing the Unit for Storage
Instructions for safely preparing the freezer for long-term storage.
Section 5 - Factory Installed Options
BUS - Back Up System
Installation, operation, and maintenance of the Back Up System.
Chart Recorder
Guides on installing chart paper and calibrating the recorder.
Datalogger
Information on datalogger functionality and evaluation software.
Water-cooled Condenser
Specifications and installation notes for the water-cooled condenser option.
Five Inner Door Option
Details about the five inner door option for specimen shelving.
Specifications
Single Door Units
Technical specifications for single-door 900 Series freezer models.
Double Door Units
Technical specifications for double-door 900 Series freezer models.
Certifications
Lists European Union directives and harmonized standards compliance.
Safety Specifications
Outlines environmental conditions and safety standards for operation.
Parts
Bill of Materials
A comprehensive list of all part numbers and descriptions.
Refrigeration Schematics
Cascade Refrigeration
Diagrams illustrating the high and low temperature stage refrigeration systems.
Electrical Schematics
Power Connection
Details the electrical power input and circuit breaker connections.
Wire Number, Color, and Gauge
Tables mapping wire numbers to their color, gauge, and destination.
Remote Contacts/Analog Output
Explains the function and pinout of the remote alarm contacts.
Warranty
900 & 8600 Series ULT Freezer Warranty
Outlines the standard warranty terms and conditions for the freezer.
International Dealer Warranty
Details the warranty terms specific to international dealers and distributors.
Appendix A
Handling Liquid Nitrogen
Safety precautions and procedures for handling liquid nitrogen.
Introduction
Overview of liquid nitrogen properties and safety considerations.
Appendix B
Handling Liquid CO2
Safety precautions and procedures for handling liquid carbon dioxide.
Appendix C
First Aid
Guidance on first aid procedures for exposure to cryogenic materials.
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