Fluidwell F126-P-EL-TP, Manual

Page: 38 / 52

FW_F126PELTP_v1702_02_EN
Page 38
6. MAINTENANCE
6.1. GENERAL DIRECTIONS

Mounting, electrical installation, start-up and maintenance of this device may only be
carried out by trained persons authorized by the operator of the facility. Persons must
read and understand this manual before carrying out its instructions.

This device may only be operated by persons who are authorized and trained by the
operator of the facility. All instructions in this manual are to be observed.

Make sure, the measuring system is correctly wired up according to the wiring diagrams.
Protection against accidental contact is no longer assured when the housing cover is
removed or the panel cabinet has been opened (danger from electrical shock). The
housing may only be opened by trained persons authorized by the operator of the facility.

Take careful notice of the "Safety rules, instructions and precautionary measures" in the
front of this manual.
The F126-P does not require special maintenance unless it is used in low-temperature applications
or surroundings with high humidity (above 90% annual mean). It is the users responsibility to take all
precautions to dehumidify the internal atmosphere of the F126-P in such a way that no condensation
will occur, e.g. to put a dose of desiccant (drying agent) inside the enclosure just before closing it.
Furthermore, it is required to replace the desiccant periodically as advised by its supplier.
Battery life-time:
It is influenced by several issues:

Type of sensor (read chapter 3): NPN and PNP inputs consume more energy than coil inputs;

Input frequency: the higher the frequency, the shorter the battery life-time;

Analog output signal; be sure that an external power supply is connected or that the function is
disabled if not in use; or else it will have a major influence on the battery life-time;

Display update: fast display update uses significantly more power;

Pulse output and communications;

Low temperatures; the available power will be less due to battery chemistry.
It is strongly advised to disable the unused functions.
Check periodically:

The condition of the enclosure, cable glands and front panel.

The input/output wiring for reliability and aging symptoms.

The process accuracy. As a result of wear and tear, re-calibration of the flowmeter and
temperature sensor might be necessary. Do not forget to re-enter any subsequent K-Factor or
Span alterations.

The indication for low-battery.

Clean window and enclosure only with a lint-free cleaning cloth made damp with a mild soap
solution.. Do not use any aggressive solvents as these might damage the coating.
6.2 REPAIR
This product cannot be repaired by the user and must be replaced with an equivalent certified
product. Repairs should only be carried out by the manufacturer or his authorized agent.