FLOWBIRD CWT Compact Touch - Display Module; Bar Code Scanner; Cleaning; Cabinet Door Display Window

Issue 13 CWT Compact Touch Installation and Maintenanace Manual Page 79
7.5 Display module
This section is about cleaning of the outmost surface of the display modules.
Cleaning the polycarbonate plastic display window in the cabinet door is
described in section
Cabinet door display window, cleaning.
Caution:
Do not apply excessive force to the display surface or the adjoining areas since
this may cause the colour tone to vary. Don’t touch, push or rub the exposed
polarizer covering the display surface of the LCD module with anything harder
than an HB pencil lead. The polarizer is soft and easily scratched. Handle it
carefully. Don’t put or attach anything on the display area to avoid marks.
If the display surface is contaminated or dusty, gently wipe it with a soft dry cloth.
To avoid damaging the surface do not scrub hard. If still not completely clear,
moisten a cloth with isopropyl alcohol or ethyl alcohol.
Solvents other than those mentioned above may damage the polarizer.
Especially, do not use water, ketones such as acetone, or aromatic solvents.
Immediately wipe off any drops of adhesives like saliva and water from the
display surface. They might otherwise cause panel surface variations and color
change.
7.6 Bar code Scanner
7.6.1 cleaning
Best reading results requires that the lens opening is cleaned free from foreign
objects such as dust, sand, leaves, excrements from birds, snow, ice, etc.
Regular checking of the Bar Code Scanner window is recommended.
If the window is damaged, replace it according Bar code Scanner replacement
7.7 Cabinet door display window
Clean the outside using a very soft cloth such as the type used for cleaning
glasses. Moisten with mild cleaning detergent solution. The rear side of the
window is more sensitive than the outside and should be cleaned with great care.
Important:
Do not forget to clean the glass in front of the warning/error indicator and the
ambient light sensor. If the light sensor is obstructed, this can increase the
terminal’s power consumption.