User manual

LT Series User Manual 8–1
• Do not use paint thinner, organic solvents, or strong acid compounds
to clean the LT unit.
• Do not use hard or pointed objects to operate the touch-screen panel,
since they can damage the panel’s surface.
A gasket which has been used for a long period of time may be scratched
or dirty, and may have lost much of its water resistance. Be sure to
change the gasket at least once a year, or when scratches or dirt be-
come visible.
Chapter
8 Maintenance
1. Regular Cleaning
2. Periodic Check Points
3. Changing the Backlight
When the surface or the frame of the display gets dirty, soak a soft cloth in water
with a neutral detergent, wring the cloth tightly, and wipe the display.
8.1 Regular Cleaning
8.1.1 Cleaning the Display
8.1.2 Installation Gasket Check / Replacement
The installation gasket protects the LT and improves its water resistance.
For instructions on installing the LT unit’s gasket, see Chapter 3 –
“Installation and Wiring.”
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 Installation Gasket Attachment Procedure
1. Place the LT on a level surface with the
display panel facing downwards.
2. Remove the gasket from the LT.
3. Insert the new water-resistant gasket.
Make sure that the grooved sides face
the top and bottom.