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Operating instructions
Alpha
Immersion Thermostat
A
Heating Thermostats
A 6, A 12, A 24
Cooling Thermostats
RA 8, RA 12, RA 24
Read the instructions prior to performing any task!

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Table of Contents
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Summarization of Contents

Prefixed Safety Notes
General Safety Guidelines
Covers general safety guidelines for operating the equipment.
Specific Safety Precautions
Details additional specific safety precautions and warnings.
Unit Overview
Environmental Operating Conditions
Specifies the required environmental conditions for safe and proper operation.
Unit Types and Designations
Details the different types and model designations of the Alpha thermostats.
Bath Vessel Information
Information about the bath vessel, its material, and volume.
Pump Description and Characteristics
Description of the centrifugal immersion pump and its characteristics.
Materials Used
Details the high-quality materials used for parts exposed to heat transfer liquid.
Temperature Control System
Explanation of the display, control system, and safety circuit functions.
Refrigeration System Details
Overview of the hermetically sealed compressor and heat dissipation system.
Included Standard Accessories
Lists standard accessories included with refrigerated and heating types.
Setup and Preparations
Assembly and Initial Setup
Instructions for placing the unit and attaching accessories.
Filling and Emptying Procedures
Procedures for filling the bath with heat transfer liquid and emptying it.
Heat Transfer Media and Hoses
Information on approved heat transfer liquids and suitable hoses.
External Circuit Connections
Guidance on connecting external circulation sets for advanced setups.
Getting Started
Power Supply Connection
Steps for correctly connecting the unit to the power supply.
Powering On the Unit
Procedure for powering on the thermostat and initial self-test.
Control Interface and Indicators
Explanation of the control panel buttons and indicator LEDs.
Setting the Temperature Setpoint
How to set the desired operating temperature for the thermostat.
Automatic Shutdown Timer
Instructions for activating and using the automatic shutdown timer.
Defining Temperature Limits
Setting maximum and minimum temperature limits to prevent damage.
Refrigeration System Configuration
Configuration options for the refrigeration system on cooling models.
Internal Temperature Probe Calibration
Procedure for calibrating the internal temperature probe for accuracy.
Restoring Factory Settings
How to reset the unit to factory default settings.
Standby Mode Operation
Explanation of the standby mode and how to reactivate operation.
Safety Function Overview
Overview of the thermostat's safety functions and error handling.
Unit Maintenance
Cleaning Procedures
Guidelines for safely cleaning the thermostat unit.
Routine Maintenance and Intervals
Covers general maintenance tasks and service intervals.
Repair Information
Important information regarding sending units for repair.
Disposal Guidelines
Information on the proper disposal of the device and its components.
Ordering Spares and Identifying the Unit
How to order spare parts and locate the rating label.

Table of Contents