Maintenance
November 2014
AC_F110_BA_02_1346
Page 19
8.
MAINTENANCE
8.1
Hints
Installation, use, maintenance and demounting of this equipment must be carried out by authorised technicians only.
Take good notice of the "Safety rules and precautionary measures" in the front of this manual.
The display / totalizer does not require special maintenance unless it is used in low-temperature applications and/or
surroundings with high humidity (above 90% annual mean). It is the customer’s responsibility to take all precautions to
dehumidify the internal atmosphere of the F110 in such a way that no condensation will take place, for example by placing
dry silica gel in the casing just before closing it. Furthermore, it is required to replace or dry the silica gel time to time as
advised by the silica gel supplier.
8.2
Battery lifetime
Is influenced by several issues:
•
Type of pick-up: see chapter
. NPN and PNP inputs consume more energy than coil inputs.
•
Analog output signal; be sure that an external power supply is connected to terminal 6 or that the function is disabled if
not in use (setup 61).
•
Display update: See setup 41.
•
Pulse output and communication.
•
Low temperatures; the available power will be less due to battery chemistry.
NOTE:
It is advised to disable unused functions to extend the lifetime.
8.3
Maintenance rate
Check periodically:
•
The condition of the casing, cable glands and front panel.
•
The wiring of components for reliability and ageing symptoms.
•
The process accuracy. As a result of wear and tear, recalibration of the flow meter might be necessary. Do adapt the actual
K-factors.
•
The indication for low-battery.
•
Clean the casing with soap-water; don't use any aggressive solvents as these might damage the polyester coating.
