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7. Maintenance, cleaning and calibration
7. Maintenance, cleaning and calibration
Personnel: skilled personnel
Tools: temperature dry-well calibrator
EN
7.1 Maintenance
This instrument is maintenance-free.
The indication and switching function should be checked once or twice every year. To
do this, the instrument must be disconnected from the process and checked using a
temperature calibrator.
Repairs must only be carried out by the manufacturer.
7.2 Cleaning
1. Before cleaning, correctly disconnect the instrument from the pressure supply, switch
it off and disconnect it from the mains.
2. Clean the instrument with a moist cloth.
Electrical connections must not come into contact with moisture.
3. Wash or clean the dismounted instrument, in order to protect persons and the
environment from exposure to residual media.
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For contact details, see chapter 1 "General information" or the back page
of the operating instructions.
CAUTION!
Physical injuries and damage to property and the environment
Residual media can result in a risk to persons, the environment and
equipment.
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Wear the requisite protective equipment.
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Carry out the cleaning process in accordance with the manufacturer's
instructions.
CAUTION!
Damage to property due to improper cleaning
Improper cleaning may lead to damage to the instrument.
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Do not use any aggressive cleaning agents.
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Do not use any hard or pointed objects for cleaning.
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Do not use any abrasive cloths or sponges.
Ensure that all the parts are dry before the power is switched on again.
WIKA operating instructions expansion thermometer, model 70
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