Zero Adjustment; Maintenance And Cleaning - WIKA Intelli Therm TGT70 Manual De Instrucciones

6. Commissioning, operation / 7. Maintenance and cleaning
Permanent indication errors caused by the ageing of the measuring system can be ignored,
as they only account for a fraction of the indication accuracy.

6.4 Zero adjustment

A zero adjustment may only be carried out by the manufacturer or in adequately equipped
workshops by qualified persons.
The electrical connection must only be made by qualified skilled personnel.
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Connect the switch via cable terminal box.
■
Conductor cross section max. 1.5 mm
■
The terminal assignment is stated on the product label of the thermometer.
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7. Maintenance and cleaning

7.1 Maintenance
This expansion thermometer is maintenance-free.
The indicator 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 exclusively be carried out by the manufacturer or by appropriately qualified
personnel.
7.2 Cleaning
CAUTION!
Prior to cleaning, switch off and disconnect the instrument from the mains.
■
Clean the instrument with a moist cloth (in soapy water).
■
Electrical connections must not come into contact with moisture.
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Wash or clean the dismounted instrument before returning it, in order to
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protect persons and the environment from exposure to residual media.
Residual media in the dismounted instrument can result in a risk to persons,
■
the environment and equipment. Take sufficient precautionary measures.
For information on returning the instrument see chapter 9.2 "Returns".
WIKA operating instructions model TGT70
2
GB
13