Notes On Cleaning; Maintenance Of Esd Protected Keypad - Mettler Toledo IND500x Installationsanleitung

2.11.1 Notes on Cleaning

2.11.2 Maintenance of ESD Protected Keypad

Intact Pattern
Figure 56: ESD Protected Keypad
The discharge resistance must be tested:
Bleeder resistance between any point of the keyboard surface (not from the display window) to the metal
housing, that means to Earth connection, must be less than 1 MOhm.
48 Installation​ ​
WARNING
To clean the ESD-protected keyboard and cover of the terminal:
1 Gently wipe the terminal's keypad and cover with a clean, damp, soft cloth.
2 Use water or mild, non-abrasive cleaning agents.
3 Do not use any type of acids, alkalis or strong industrial solvents such as toluene or
isopropanol (IPA) that could damage the terminal's finish.
4 Do not spray cleaner directly on the terminal.
5 Do not clean the terminal using high-pressure or high-temperature water.
6 Build-up of dust layers must be avoided.
7 Remove light dust deposits using a damp cloth with a gentle wiping motion.
8 Do not use compressed air or vacuum to remove dust layers.
9 Follow good housekeeping practices to keep the terminal clean.
WARNING
Replace the entire keypad when the ESD layer is visibly worn.
Overworn Pattern
OK
Broken ESD Layer
Replace Replace Immediately!
IND500x