Table of Contents
Advertisement
Maintenance
8 Maintenance
The following chapter describes the maintenance work that can be carried out by a qualified and trained end user.
Information:
Only components approved by B&R are permitted to be used for maintenance work.
8.1 Cleaning
Danger!
Power Panel devices are only permitted to be cleaned while switched off in order to prevent unintended
functions from being triggered when handling the touch screen or pressing keys.
Power Panel devices should be cleaned with a moist cloth. Use only water with detergent, screen cleaner or alcohol
(ethanol) to moisten the cloth. Apply the cleaning agent to the cloth first; do not spray it directly onto the Power
Panel! Never use aggressive solvents, chemicals, abrasive cleaners, compressed air or steam cleaners.
Notice!
Cleaning the label on the back of the unit is only permitted with a dry cloth. This ensures readability
of the thermal print during the service life of the device.
Information:
The display with the touch screen should be cleaned at regular intervals.
8.2 Screen burn-in on LCD/TFT monitors
Screen burn-in (afterimages, display memory effect, image retention or image persistence) occurs on LCD/TFT
monitors if static image content is displayed for a prolonged period of time. This static screen content causes the
build-up of parasitic capacitances within the LCD components that prevent liquid crystal molecules from returning
to their original state. This condition is unpredictable and can depend on the following factors:
• Type of image displayed
• Color composition of the image
• Length of time that the image is displayed
• Ambient temperature
Preventing screen burn-in
Even if there is no possibility to avoid screen burn-in 100%, measures can be taken to reduce it significantly.
• Avoid static images or screen content.
• Use screensavers (moving) when the display is not in use
• Frequent picture change
• Turn off the display when not in use.
Turning off the backlight does not help prevent screen burn-in.
118
Power Panel FT50 User's manual V1.19
Advertisement
Table of Contents
