7-2 Inspection and Cleaning 
7-2  Inspection and Cleaning  
 
Clean and inspect the PT periodically to maintain it in optimum condition for use. 
 
● Cleaning Methods  
The screen visibility will be impaired if the display becomes dirty. Clean the display periodi-
cally using the following methods: 
• 
• 
• 
For daily cleaning, wipe with a soft, dry cloth.  Attempting to remove heavy dirt with the 
cloth may scratch the front panel sheet. Use a damp cloth and wipe the surface again to 
remove dirt. 
If dirt cannot be removed using a dry cloth, dampen the cloth sufficiently with a neutral 
cleaning agent solution (approximately 2%), squeeze the cloth out, and then wipe the sur-
face. 
Materials such as rubber, vinyl, or tape that are attached to the Unit will leave stains if left 
for a long time.  If such material is attached to the Unit, remove when cleaning. 
 
Note
  Never use benzene, thinner, or other volatile solvents, or chemical cloths to clean the PT. 
 
● Inspection Methods  
Inspect the PT once every six to twelve months. Shorten the interval between inspections 
when using the PT in extreme conditions, such as under high temperatures, high humidity, or 
environments subject to large quantities of dust. 
 
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