FW-N410-P-M_v0203_01_EN
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5.
MAINTENANCE
5.1.
GENERAL DIRECTIONS
▪
Installation, electrical wiring, start-up and maintenance of the instrument may only be
performed by authorized and trained personnel. Personnel must read and understand
this Operating Manual before carrying out its instructions.
▪
All instructions in this manual are to be observed.
▪
Ensure that the measuring system is correctly wired 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 personnel.
▪
Take careful notice of the
“
Safety rules, instructions and precautionary measures
”
in
the front of this manual.
The N410-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 N410-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.
Check periodically:
▪
The condition of the casing, cable glands and front panel gasket and buttons.
▪
The input/output wiring for reliability and aging symptoms.
▪
The process accuracy. As a result of wear and tear, re-calibration of the flowmeter might be
necessary. Do not forget to re-enter any subsequent K-factor alterations.
▪
Clean the casing with soapy-water. Do not use any aggressive solvents as these might damage
the coating.
5.2.
REPAIR
Note: following repair actions do require the breaking of the W&M seal:
a. The two field replaceable, heavy duty, mechanical relays (make-and-break / NO-NC),
configurable for i.e. batching with one-stage or two-stage control, can be repaired by an
authorized person and shall be replaced with equivalent certified parts. These relays are of
make/type: Panasonic DK1A1B24V and have Farnell order number: 1423190.
b. The fuse, located on the PCB above the supply connectors, shall be replaced with an equivalent
certified part. The fuse is of make/type: fuse slow 250vac 1.25a radial by Littelfuse 37211250411
and has Digikey order number: WK4250BK-ND
c. The, primary, real-time clock (RTC) battery, located on the interface board and used as a back-
up battery for the internal clock (date/time stamp). The RTC battery shall be replaced with an
equivalent certified part. The RTC battery is of make/type: Energizer BR1225
(ANSI/NEDA 5020LC/AWCI L09), Lithium-Carbon/Fluoride, 3V/48mAh, Low-drain.
5.3.
REPAIR POLICY
If you have any problem with your Fluidwell product and you wish Fluidwell to repair it, please follow
the procedure below:
a. Obtain a Return Material Authorization (RMA) from your supplier or distributor Together with the
RMA, you need to complete a repair form to submit detailed information about the problem.
b. Send the product, within 30 days, to the address provided with the RMA. The physical return of
your repair can only take place after the authorization of your repair application, as confirmed by
the RMA number.
If the product is within the warranty period, it will be repaired or exchanged and returned within three
weeks. If the product is no longer under warranty, you will receive a repair estimate.
