MAINTENANCE AND REPAIRS 8
8020065-ZLP4/2017-08-10|SICK
Subject to change without notice
OPERATING INSTRUCTIONS | Master Data Analyzer
8.1.2 Cleaning the light grids
The MLG-2 modular light grids are maintenance-free. Depending on the ambient
conditions, regular cleaning is required.
Fig. 49: Cleaning – Light grids
To achieve the full optical output of the light grids, the front screens should be regularly
checked for contamination. This is especially true in harsh operating environments (dust,
abrasion, humidity, fingerprints).
Static charges can cause dust particles to adhere to the front screen.
Contamination message
The MLG-2 light grid has a contamination warning which is indicated via a flashing yellow
light emitting diode on the receiver.
The yellow LED also displays the same flashing behavior during the teach-in process.
The contamination warning is shown on the display (see also chapter 9.2.1 Status
indicator on the display).
How to clean the front screen
▸
Use a clean, soft brush to remove dust from the front screen.
▸
Then wipe the front screen with a clean, damp cloth.
▸
For cleaning, use SICK anti-static plastic cleaner (part number 5600006) and SICK lens
cloth (part number 4003353).
Damage to the front screen
The front screen is made of plastic. The optical output is weakened by scratches and
streaks on the front screen.
Measures
▸
Do not use aggressive cleaning agents.
▸
Do not use abrasive cleaning agents.
▸
Avoid scratching and chafing motion on the front screen.
Do not move the light grids from their position
▸
Ensure that the light grids are not moved from their position whilst cleaning them.
3 Hz yellow
Recommendation
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