Maintenance - Endress+Hauser Liquicap M FTI51 Operating Instructions Manual

Maintenance

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7 Maintenance
No special maintenance work is required for the level measuring device Liquicap M.
External cleaning
When cleaning the exterior of the Liquicap M, always use cleaning agents that do not attack the
surface of the housing or the seals.
Seals
The process seals of the pick-up must be replaced periodically, particularly in the case of molded
seals (aseptic version). The period between changes depends on the frequency of cleaning cycles,
the cleaning temperature and the medium temperature.
Repair
According to the Endress+Hauser repair concept, the measuring devices have a modular design and
repairs can be carried out by the customer.
Spare parts are grouped logically into kits along with the respective replacement instructions. The
"Spare parts" section lists all spare part kits, with their order numbers, that you can order from
Endress+Hauser for repair of the Liquicap M. For more information about service and spare parts,
contact Endress+Hauser Service.
Repair of Ex-certified devices
The following information also has to be taken into account for repairs of Ex-certified devices:
• Ex-certified devices may be repaired only by experienced, skilled staff or by Endress+Hauser
Service.
• Applicable standards, federal/national Ex standards and the Safety Instructions (XA) and
certificates must be observed.
• Only genuine spare parts from Endress+Hauser may be used.
• When ordering spare parts, please note the device designation on the nameplate. Parts can only
be replaced by the same parts.
• Repairs must be carried out according to the instructions. Following the repair, the individual
testing specified for the device must be carried out.
• Certified devices can only be converted into other certified devices by Endress+Hauser Service.
• Every conversion and repair made to the device must be documented.
Replacement
After replacing a Liquicap M or the electronic insert, the calibration values must be transferred to
the replacement device.
=> If the probe is replaced, the calibration values in the electronic insert are transferred (manual
download) to the sensor DAT (EEPROM).
=> If the electronic insert is replaced, the calibration values of the sensor DAT (EEPROM)
are transferred (manual upload) to the electronics.
You can put the device back into operation without recalibrating it. (For more information, refer to
chapter 6.2.10, Sensor DAT (EEPROM) upload/download.)
Liquicap M FMI51, FMI52
Endress+Hauser