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Lauda RA 12 User Manual

Lauda RA 12
52 pages
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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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Lauda RA 12 Specifications

General IconGeneral
Pump capacity flow rate15 l/min
Bath volume12 l
Temperature stability±0.01 °C
Pump capacity15 l/min
Heating capacity2.0 kW

Summary

Prefixed safety notes

SAFETY NOTES

GENERAL SAFETY NOTES

General safety guidelines for operating the laboratory thermostat, covering intended use and personnel qualifications.

OTHER SAFETY NOTES

Specific safety precautions related to transport, handling, power connection, and operation of the thermostat.

BRIEF OPERATING INSTRUCTIONS

CONTROL AND FUNCTIONAL ELEMENTS

UNIT DESCRIPTION

ENVIRONMENTAL CONDITIONS

Specifies the allowed operating conditions, including indoor use, altitude, temperature, humidity, and pollution degree.

TYPES OF UNIT

Explains the Alpha thermostat naming convention and how type designations relate to heating or cooling functionality.

BATHS

Details the bath types, materials, volumes, and clamping requirements for different Alpha models.

PUMP

Describes the centrifugal immersion pump, its motor, and the function of the pump outflow reducer.

MATERIALS

Outlines the high-quality materials used for parts exposed to heat transfer liquid.

TEMPERATURE INDICATION, CONTROL AND SAFETY CIRCUIT

Explains the LED display, control keys, temperature probe, and the logic of the control algorithm.

REFRIGERATION SYSTEM

Details the components of the refrigeration system, including the compressor, condenser, and ventilation.

STANDARD ACCESSORIES

Lists standard accessories included with refrigerated RA types and optional accessories for heating types.

UNPACKING

PREPARATIONS

ASSEMBLY AND SETTING UP

Instructions for placing the unit, attaching pump outflow reducers, and securing the control head.

FILLING AND EMPTYING

Guides on filling the bath with heat transfer liquid to the correct level and how to empty the unit safely.

HEAT TRANSFER LIQUIDS AND HOSES

Details approved heat transfer liquids, their properties, and specifications for suitable hoses and their application.

CONNECTION OF EXTERNAL CIRCUITS

Explains how to connect external circulation sets for using the thermostat as a circulation thermostat.

STARTING UP

CONNECTION TO THE SUPPLY

Instructions for connecting the unit to the correct grounded mains power socket and fuse protection.

SWITCHING ON

Describes the process of switching on the unit, the self-test sequence, and initial display readings.

GENERAL KEY FUNCTIONS AND PILOT LAMPS

Explains the functions of the control keys (Enter, Decrement/Increment) and the meaning of pilot lamps.

TEMPERATURE SETPOINT SETTING SET

Details how to set the desired bath temperature, including value acceptance and temperature limits.

AUTOMATIC SHUTDOWN TIMER ASD

Covers activation, deactivation, reading, and setting the automatic shutdown timer for the unit.

DEFINING TEMPERATURE LIMITS HI AND LO

Explains how to set maximum (Hi) and minimum (Lo) temperature limits to prevent damage or improper operation.

REFRIGERATION UNIT SUBMENU COOL

Describes the configuration options for the refrigeration system (Auto, On, Off) for cooling thermostats.

OFFSET FOR THE INTERNAL TEMPERATURE PROBE CAL

Details how to adjust the offset for the internal temperature probe for accurate measurements.

RESTORING WORKS SETTINGS DEF

Explains how to restore the unit's settings to factory defaults, excluding probe calibrations.

STANDBY STBY

Describes the 'Standby' status and how to return to the standard operation menu.

SAFETY FUNCTIONS

Overview of alarms, warnings, and errors triggered by safety functions like overtemperature or low level.

Fault list Alarms and Errors

MAINTENANCE

CLEANING

Instructions for safely cleaning the unit using a moist cloth and mild detergent.

MAINTENANCE

Outlines general maintenance procedures, service intervals, and parts requiring periodic checks.

NOTE ON REPAIR

Advises contacting LAUDA Service for repairs and proper packing of returned units.

DISPOSAL INFORMATION

Information on proper disposal of the device and its packaging according to EU directives.

ORDERING SPARES AND RATING LABEL

Guidance on how to order spare parts and locate the instrument's rating label.

ACCESSORIES

TECHNICAL DATA AND DIAGRAMS

Common technical data of Alpha Thermostats

Provides general technical specifications, including ambient temperature, humidity, and power ratings.

Alpha Immersion Thermostat

Detailed technical specifications for the Alpha Immersion Thermostat model.

Alpha Heating and Cooling Thermostats

Technical specifications for Alpha Heating and Cooling Thermostat models (A and RA series).

Refrigerant and filling quantity

Information on refrigerants, filling quantities, and CO2 equivalent for cooling thermostats.

Pump characteristics Alpha Immersion Thermostat

Graphical representation of pump performance (pressure vs. flow rate) for immersion thermostats.

Cooling characteristics Alpha RA 8, RA 12 and RA 24 (230 V~)

Graphical representation of cooling performance over time for specific RA models.

DECLARATION OF CONFORMITY AND PRODUCT RETURNS

COPYRIGHT

INDEX

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