CO Potentiometer (on HLM)

CO Potentiometer (on HLM):

Check function:

•D• 2 - Measure CO content and set to nominal value with CO potentiometer (adjusting screw on HLM). The basic setting on the potentiometer is 1.25 V. For CO nominal values, see Technical Data at the end of this section.

Check voltage supply:

A voltage of approx. 5 V must be applied at the HLM connector between Pins 3 and 4.