2
6.6.
Freezer Control Variables...........................................................................................................25
7.
Operating Instructions.........................................................................................................................27
7.1.
Important Operating and Maintenance Pointers.......................................................................27
7.2.
Daily Start‐Up and Operation.....................................................................................................27
7.3.
Production Interruptions............................................................................................................29
7.4.
Vapor Exhaust Collection and Discharge....................................................................................29
7.5.
Product Temperature Equilibration ...........................................................................................30
7.6.
Shutdown ...................................................................................................................................31
7.7.
Emergency Shut Down ...............................................................................................................31
8.
Cleaning................................................................................................................................................32
8.1.
Pre‐Cleaning Checklist................................................................................................................32
8.2.
Cleaning Procedure ....................................................................................................................32
9.
Maintenance........................................................................................................................................34
9.1.
Preventative Maintenance.........................................................................................................34
9.2.
Entry / Exit Vestibules.................................................................................................................34
9.3.
Conveyor and Conveyor Drive....................................................................................................35
9.4.
Safety Relief Valves ....................................................................................................................36
9.5.
Module Joints .............................................................................................................................36
9.6.
Solenoid Valves...........................................................................................................................36
9.7.
Strainer.......................................................................................................................................36
9.8.
Doors ..........................................................................................................................................36
9.9.
Headers and Orifices ..................................................................................................................37
9.10.
Temperature Controller .............................................................................................................38
9.11.
Temperature Sensor (RTD Type) ................................................................................................38
10.
Trouble Shooting .................................................................................................................................41
10.1.
Electrical Power Supply ..............................................................................................................41
10.2.
Liquid Nitrogen Supply ...............................................................................................................41
10.3.
Conveyor System........................................................................................................................41
10.4.
Troublshooting Table..................................................................................................................42
11.
Spare Parts List ....................................................................................................................................45
11.1.
Motor and Fan Assembly Parts...................................................................................................45
11.2.
Control Cabinet Parts .................................................................................................................45
11.3.
Other Parts .................................................................................................................................46
12.
Appendices...........................................................................................................................................47
12.1.
Appendix A –Liquid Nitrogen MSDS ..........................................................................................47
12.2.
Appendix B –Reference Drawings .............................................................................................48
12.3.
Appendix C –Component Manuals............................................................................................49
For more specific information about the equipment and components, please contact manufacturer.
