Operation - Installing/Replacing Chart 
148    DR4500A Classic Series Circular Chart Recorder With or Without Control Product Manual  Release M 
    April 2017 
5.17  Installing/Replacing Chart 
Installing/replacing chart procedure 
Follow the procedure in 90HTable 5-1 to install/replace the chart. 
 
Store replacement charts in a dust-resistant location. Otherwise, accumulated dust on the 
chart may cause excessive pen tip abrasion which can shorten expected pen life. In addition, 
you may want to air purge the case if the recorder is mounted in an extremely dusty 
environment.