Burkert Type 8175 - Manual (Page 124)

56
8175
ENGLISH
MAINTENANCE
5.1 STORING AND CLEANING OF THE SENSOR
Ultrasonic level sensors do not require any special maintenance, however, the bottom of
the sensor must not be covered by sediments. If necesary the sensor can be easily cleaned
using a soft bristled brush and detergent compatible with PVDF. Do not use harsh abrasive
brushes or solutions which may damage the PVDF sensor enclosure.
Ensure that the tank / pipe does not contain any fluid or pressure before
dismounting.
5.2 TROUBLE SHOOTING GUIDE
This section is designed to assist with problems which may occur during installation or ope-
ration. If in doubt, please do not hesitate to contact your local Bürkert subsidiary.
Faults Status Actions See
The transmitter does not work
- Transmitter connected?
- Fuses OK ?
- Switch ON?
- Power supply on terminals IN+ and IN- OK?
No
No
No
No Connect the device
Change the fuses
Set the switch to ON
Check the connection 3.3
--
--
3.3
Transmitter programming unavailable
Switch SW1 set to the left (ENTER key locked)?
Yes Set SW1 switch to the right 3.3
Display «ERROR»
- Display at the start-up (EEPROM failure)?
- Error at each start-up?
- Display after validation of the menu
(EEPROM
failure)?
- Failure at each validation of the menu?
- Display within the Teach-In mode?
Yes
Yes
Yes
Yes
Yes
Restart the device
Send the device back to Bürkert
Configure the device again
Send the device back to Bürkert
Perform a new Teach-in
--
--
4.4
--
4.4.6
Display «--- °C» or «--- °F»
- Fluid temperature between -40 and +80 °C?
- Connector for Pt1000 connected?
(open the transmitter)
No
No Device out of range
Connect the Pt1000 --
--
Blinking display of the transmitter
- Blinking unit?
(m, cm, pouce, pied, m
3 , l, US Gal, IMP Gal)
- Blinking of the whole display?
Yes
Yes
Perform an echo reset
Check the connection of connectors
4.5.6
3.3
Current output of 22 mA
- Fluid temperature between -40 and +80 °C?
- Display blinking?
- Display message "ERROR"?
No
Yes
Yes Device out of range
See above
Re-calibrate the device --
4.5.6
4.4
Current output value zero or different from the display
- SW2 correctly set (sinking or sourcing)?
- Connection of the current output OK?
- Failure < 1 mA?
No
No
Yes Modify SW2
Connect current output
Set the offset and span 3.3
3.3
4.5