Refco TRITECTOR Bedienungsanleitung Seite 15

7. Maintenance
The leak detector requires maintenance when used regularly:
7.1 Replace Filter
Unscrew the sensor tip, as shown below. Replace the filter whenever
it becomes visibly dirty or every 3 to 4 months, depending on use.
7.2 Cleaning
Clean the screen and the housing surface with a cloth and cleaning
agent.
Do not use corrosive cleaning agents or solvents to clean the unit.
Weak household cleaners and soap suds may be used.
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Filter
Instruction Manual