Thermo Scientific 7400 Series Operating And Maintenance Manual

Thermo Scientific 7400 Series Operating And Maintenance Manual

Liquid nitrogen storage system

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Model 7400 Series
CRYO Plus 1, 2, 3, and 4
Liquid Nitrogen Storage System
Operating and Maintenance Manual 7007400 Rev. 11

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Summarization of Contents

Section 1 Quick Start-Up
Connect Transfer Hose and Power
Connect the liquid nitrogen transfer hose and power cord to the unit.
Assemble Unit and Connect Supply
Attach the lid strap and connect the unit to the electrical supply.
Configure and Fill Unit
Install platform riser, temperature sleeve, and perform initial filling.
Interface Ports and Verification
Connect remote alarm and RS-232, verify installation procedures.
Section 2 Operation
Control Panel Overview
Explanation of control panel elements, indicators, and buttons.
Bar Graph and Setpoint Configuration
Understanding the bar graph and setting high/low levels and temperature alarms.
Internal Clock and Printer Setup
Setting the internal clock and configuring the optional control printer.
Section 4 Maintenance
Valve Maintenance Procedures
Instructions for cleaning, disassembly, and reassembly of valves.
General Cleaning and Defrosting
Guidelines for cleaning the unit's interior, exterior, and defrosting ports.
Section 6 Parts List
Accessory List
List of available optional accessories for the CryoPlus system.
Exceptions and Inventory Control
Lists model-specific exceptions and provides inventory control system details.
Section 9 Appendix
Handling Liquid Nitrogen Safely
General safety precautions and procedures for handling liquid nitrogen.
Introduction to Liquid Nitrogen Hazards
Explains hazards related to extreme cold and gas expansion.
First Aid for Liquid Nitrogen Exposure
Procedures for immediate medical assistance after exposure.

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