Proface LT3300 - 5.7 All-in-One HMI" - Manual (Page 90)

Chapter 5 Maintenance
5-3
5.2 Periodic Check Points
To keep your LT unit in its best condition, please inspect the following points periodically.
„ LT Operation Environment
† Is the operating temperature within the allowable range (0ºC to 50ºC)?
† Is the operating humidity within the specified range (10%RH to 90%RH, dry bulb temperature of 39ºC or
less)?
† Is the operating atmosphere free of corrosive gasses?
When using the LT unit inside a panel, the ambient environment refers to the interior of the panel.
„ Electrical Specifications
† Is the input voltage appropriate?
DC19.2 to 28.8V
„ Related Items
† Are all power cords and cables connected properly? Have any become loose?
† Are all mounting brackets holding the unit securely?
† Are there many scratches or traces of dirt on the installation gasket?