AO2040/CALDOS A25
Content of theOperator’s Manual
AO2000 series continuous gas analyzer
It should always be used in conjunction with the primary operator’s manual andcontains all the information required for proper and safe installation, start-up andoperation of the AO2040-CU Ex central unit. Note the information on the “Analyzer Data Sheet” shipped with every AO2040-CU Ex central unit.
Requirements forSafe Operation
PersonnelQualifications
Special Informationand Precautions
In order to operate in a safe and efficient manner, the AO2040-CU Ex central unitshould be properly handled and stored, correctly installed and set-up, properlyoperated and correctly maintained.
Only persons familiar with the installation, set-up, operation and maintenance ofcomparable equipment and certified as being capable of such work should workon the A02040-CU Ex central unit.
These include

The content of this operator’s manual
The safety information affixed to the A02040-CU Ex central unit.
Safety precautions for the installation and operation of electrical devices.
Safety precautions for working with gases,acids,condensates, etc.
Regulations,standards and guidelines for explosion protection.
National Regulations
A02040-CU ExCentral Unit Safetyand Safe Operation
The regulations, standards and guidelines cited in this operator’s manual areapplicable in the Federal Republic of Germany. The applicable national regulationsshould be followed when the A02040-CU Ex central unit is used in other countries

Observe SafetyPrecautions
Do Not Work WhereThere is a Risk ofExplosion
Potential Compen-sation Connection
Risks of Loss ofPotential Compen.sation Continuity
Proper OperatingVoltage
Risks lnvolved inOpening the covers
Before starting any work on the AO2040-CU Ex central unit, observe all explosion.
protection safety precautions.
While there is a risk of explosion, do not work on current-bearing components,except intrinsically safe circuits, and do not work with equipment that poses anignition hazard.
The connection to the local potential compensation point must be made before al
other connections.
The A02040-CU Ex central unit can be hazardous if the potential compensation isinterrupted inside or outside the central unit or if the potential compensation isdisconnected.
Be sure the A02040-CU Ex central unit voltage setting matches the line voltageoefore connecting the power supply.
Current-bearing components can be exposed when the covers or parts areremoved, unless this can be done without tools. Current can be present at someconnection points.