Taylor TW-357 manual Lid Switch, Solenoid Valve, Thermocouples, Wall Transformer, Battery Backup

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TW-357 REV E

Lid Switch

Is attached to the hinge and determines whether or not the lid is open on the freezer. This also allows the control to determine whether to activate the Quickchill, Auto Defog or Lid Alarm features.

Lid Switch

Figure 3.0 Lid Switch

Solenoid Valve

Designed to work with 12 VDC solenoid valves manufactured by Valcor, Parker-Hannifin, ASCO or Alcon. (See plumbing assembly Figure 10.0 on page 37 of this manual.)

Thermocouples

Type T thermocouples determine the temperature in the freezer. The user may choose to use NONE, 1 or 2 thermocouples with this control at any time. (The unit comes complete with one Thermocouple)

Wall Transformer

A 16.5 VAC, 40 VA wall transformer is a standard option on the LABS cryostorage system with battery backup. A 24 VAC, 40 VA wall transformer is supplied for the Kryos version (No Battery). The system is supplied with a transformer compatible with common household (North American) 110VAC. (For other power outlets contact Taylor-Wharton Customer Service.) These wall transformers have UL approval. UL approval for the system as a whole is not required since the control operates on low voltage. If your power source differs, or is subject to disruption or line surges due to other equipment on line, consult your Taylor- Wharton representative.

Battery Backup

The LABS cryostorage system with the battery backup option has a 12VDC battery installed underneath the unit's tabletop.

Remote Alarm

If an error condition occurs after a user defined period of time a remote alarm circuit can be initiated. This is accomplished by connecting a remote device to the remote alarm jack on the rear electrical panel. The 3-pin jack on the back of the unit provides continuity between pin #2 (common) and pin #3 in the normal condition. Continuity between pin #1 and pin #2 is provided in an error condition. (See Figure 4.0 below.)

Figure 4.0 Remote Alarm Plug Connection

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Contents Labs TW-357 REV E Table of Contents InstallationExtreme Cold Cover Eyes and Exposed Skin Safety Precautions for Liquid NitrogenKeep Equipment Area Well Ventilated Liquid Nitrogen SystemDispose of Waste Liquid Nitrogen Safely Freight Damage PrecautionsElectrical Text Format Notation General InformationLabs Cryostorage Specifications Kryos Specifications Unpacking and Inspection InstallationLiquid Nitrogen Supply Connection Repackaging for ShipmentKryos Control Field Installation Power Supply ConnectionInitial Fill OperationControl Components Sensor AssemblyInterface Panel Battery Backup Lid SwitchRemote Alarm Solenoid ValveOperating Parameters Liquid Phase StorageThermocouple Positioning Adding an Inventory Control SystemInventory Control System Layouts Labs Cryostorage System Racks are not Square Orientation is ImportantLABS-80K LABS-40K Fenwal 4R59953 Blood Bag Rack Arrangements Fenwal 4R5462 9955 Blood Bag Rack Arrangements Control Operation PowerIntroduction Normal Fill CycleMenu System Main Display ScreenHigh Temperature 4.1 Valve Open Calibrate Temperature Temperature Thermocouple SelectTest Temperature System Help ScreensSensor Type Alarms and Error ConditionsTest Alarms System AlarmsLogging Dump Logs Error LogsSystem Logs Temperature LogsErase Logs SecurityControl By Temperature Lid Switch SetupTemperature Control Settings Control TemperatureUser Access Logs Serial Communications and RS-232 SettingsTime and Date Set Freeze-Guard Options Control RangeValve Monitoring Valve Open DurationSolenoid Valve Control On Battery Backup VersionDisplay Brightness About this ControlInterface Software Battery LifeStrainer Cleaning Instructions MaintenanceDefrosting Your LAB-Series CryoStorage System Cleaning Your Taylor-Wharton CryoStorage System Making Adjustments to the Labs Kryos Sensor Assembly Kryos Kryos V9.0 & Kryos V9.0B Level Readings Default Start Fill / Stop Fill Default Auto DefogOffset Value Units of measureOhms to 18 K ohms Removing/Installing the Solenoid ValvePin View Schematics Sensor Plug SchematicPlumbing Assembly Labs Plumbing AssemblySymptoms TroubleshootingController Will Not Turn on Indicates High Liquid LevelIndicates Low LN2 Supply Temperature reading 10 to 20 degrees warmIndicates Open Sensor QCF Quick Chill Feature Will Not Operate Lid Open AlarmFill Solenoid Cycles On and Off Fill Solenoid Makes Humming NoisePower Failure Alarm Defog Feature Will Not OperatePush Buttons Will Not Respond Liquid Level Readout is IncorrectFactory Settings Level Controller Electrical/Mechanical Parts80K/40K/20K Replacement PartsTaylor-Wharton Technical Services. Phone 800-898-2657 Fax Harsco Corporation