WIKA LS-10 - Manual (Page 13)

13 WIKA operating instructions submersible pressure transmitter, model LS-10
14075012.01 08/2013 GB/D/F/E
GB
7.2 Cleaning
CAUTION!
■ Prior to cleaning, switch off and disconnect the submersible pressure transmitter from the voltage
supply.
■ Clean the instrument with a moist cloth.
■ Wash or clean the dismounted instrument before returning it, in order to protect persons and the environ-
ment from exposure to residual media.
■ Residual media in dismounted instruments can result in a risk to persons, the environment and
equipment. Take sufficient precautionary measures.
■ Do not use any pointed or hard objects for cleaning, as they may damage the diaphragm of the process
connection.
For information on returning the instrument see chapter 9.2 “Return”.
8. Faults
In the event of any faults, first check whether the submersible pressure transmitter is mounted correctly, mechanically
and electrically.
Faults Causes Measures
No output signal Cable break Check the continuity, and if necessary exchange
the cable
No/wrong power supply Correct the power supply
No/wrong output signal Wiring error Rectify the wiring
Signal span too small/drops Mechanical overload caused by overpres-
sure
Replace instrument; if it fails repeatedly, contact
the manufacturer.
Diaphragm damaged, e.g. due to impacts,
abrasive/aggressive medium; corrosion at
diaphragm; transmission medium missing
Replace instrument; if it fails repeatedly, contact
the manufacturer.
Signal span varies/inaccurate Operating temperature too high/low Operate the instrument in the permissible
temperature range
7. Maintenance and cleaning / 8. Faults