Thermo Scientific CRYO Plus 2 Operating And Maintenance Manual

Thermo Scientific CRYO Plus 2 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

CryoPlus Quick Start-Up Guide
Connect Liquid Nitrogen Transfer Hose
Connect the transfer hose from the liquid nitrogen supply to the storage container.
Attach Power Cord
Securely connect the power cord to the unit's power outlet module.
Connect to Electrical Supply
Connect the unit to a grounded electrical outlet with the power switch OFF.
Fill Unit
Fill the storage container with liquid nitrogen, keeping the lid open during initial filling.
Remote Alarm Connector
Connect the remote alarm contacts via an RJ-11 connector on the back of the cabinet.
RS-232 Interface Connector
Connect the RS-232 serial interface for remote data transmission.
Installation Verification
Perform tests to verify key elements of the CryoPlus Freezer system installation.
CryoPlus Unit Operation
Bar Graph Overview
Understand the tri-color bar graph indicating liquid level and setpoints.
Program Controller Functions
Learn to navigate and program the unit's controller using the keypad and key switch.
Change High Level Setpoint
Adjust the high level setpoint to control the stop filling point.
Change Low Level Setpoint
Adjust the low level setpoint to control the start filling point.
Change High Temperature Alarm Setpoint
Set the temperature threshold for the high temperature alarm activation.
Set Microprocessor Internal Clock
Configure the unit's internal clock for accurate logging of events.
Optional Control Printer
Information regarding the installation and function of the optional control printer.
CryoPlus Maintenance Procedures
Valve Operation and Mounting
Understand valve operation modes and proper mounting for optimal performance.
Valve Cleaning and Disassembly
Follow procedures for cleaning and disassembling solenoid valves for maintenance.
General Cleaning
Guidelines for cleaning the interior and exterior surfaces of the CryoPlus unit.
Defrosting Procedures
Steps for safely defrosting the storage tank and the vent port.
CryoPlus Parts List and Accessories
Accessory List
List of available accessories for the CryoPlus system.
Exceptions
Details on part number exceptions for different CryoPlus models.
Inventory Control
Information on inventory control racks, frames, and canister systems.
CryoPlus Warranty Information
Standard Product Warranty
Details of the standard product warranty, including coverage and exclusions.
International Dealer Warranty
Information regarding the international dealer warranty for CryoPlus units.
CryoPlus Appendix: Handling Liquid Nitrogen
Handling Liquid Nitrogen Safely
Essential safety precautions for handling liquid nitrogen, including protective clothing and potential hazards.
First Aid Procedures
Guidance on first aid for exposure to liquid nitrogen or cold gas.

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