20Adjusting InstructionsAir Flow Rate Adjusting ProcedureAdjusting procedure• Set the selector switch to its "Manual"or "Hand" position.Air flow rate adjustmentThe air control curve of the compoundcontroller is factory-set so that the airdamper is closed in minimum positionand open in maximum position.The combustion air flow rate requiredfor proper fuel combustion is controlledby an electronic fuel-air compound con-trol system over the full load range. Acheck is made by analyzing the exhaustgases.For the gradual adjustment of theload points (fuel flow rate, air flowrate), a procedure should be used asdescribed in the operating instruc-tions for the electronic compoundcontrol system.A fuel test should be made at each pointif possible.
