Table Of Contents - Thermo Scientific 274F Manual

Laboratory freezers
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Table of Contents

Safety Information ..................................................................................................................................................................3
Alert Signals ....................................................................................................................................................................3
Warning ..........................................................................................................................................................................3
Unpacking ..............................................................................................................................................................................4
Visible Loss or Damage ..................................................................................................................................................4
Concealed Loss or Damage............................................................................................................................................4
Packing List ....................................................................................................................................................................4
Performance Characteristics ..................................................................................................................................................5
Temperature Ranges ......................................................................................................................................................5
Temperature Stability ......................................................................................................................................................5
Electrical Requirements ..................................................................................................................................................5
Installation ..............................................................................................................................................................................6
Selecting a Location ........................................................................................................................................................6
Casters ............................................................................................................................................................................6
Leveling the Unit..............................................................................................................................................................6
Shelves ............................................................................................................................................................................6
Shelf Installation ..............................................................................................................................................................7
Compressor Mounts ........................................................................................................................................................7
Electrical Connection ......................................................................................................................................................9
Operation ..............................................................................................................................................................................10
Control Layout ..............................................................................................................................................................10
Temperature Controller..................................................................................................................................................10
Setting the Temperature ................................................................................................................................................11
Units Select ..................................................................................................................................................................11
Calibration Offset ..........................................................................................................................................................11
Hold-Off Time ................................................................................................................................................................12
Error Codes ..................................................................................................................................................................12
Interior Lights ................................................................................................................................................................12
Defrost System ..............................................................................................................................................................13
Chart Recorder Operation and Maintenance ......................................................................................................................14
Chart Recorder Power Supply ......................................................................................................................................14
Changing the Chart Paper ............................................................................................................................................14
Marking Systems: Mark-A-Matic II Inking System ........................................................................................................15
Replacement of Pen ......................................................................................................................................................15
Recorders Equipped with Fiber Tipped Cartridge..................................................................................................15
Pen Arm Calibration ......................................................................................................................................................16
Temperature Recorder Calibration Check ....................................................................................................................17
Chart Rotation Speed....................................................................................................................................................17
Battery Back-Up ............................................................................................................................................................18
Battery Location and Replacement ..............................................................................................................................18
Optional Alarm/Control Relay ........................................................................................................................................18
Connection to the Relay ........................................................................................................................................18
Setting the Alarms ........................................................................................................................................................19
Chart Range Selection ..................................................................................................................................................20
Recorder Specifications ................................................................................................................................................21
Troubleshooting ....................................................................................................................................................................22
Maintenance ........................................................................................................................................................................23
Cabinet Cleaning ..........................................................................................................................................................23
Cleaning the Condenser................................................................................................................................................23
Condensate Evaporator Pan ........................................................................................................................................23
Wiring Diagrams ..................................................................................................................................................................24
Warranty ..............................................................................................................................................................................28
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