Flintec FAD-4 - Manual (Page 20)

FLINTEC
Document Date Code Rev. Page
FAD - 4 DIGITAL LOADCELL JUNCTION BOX 02.05.00 FAD4_2RM 2 20 of 20
8.2 ENVIRONMENTAL CONSIDERATIONS
AMBIENT : Storage -10 to +70 0 C.
TEMPERATURE Operating -10 to +40 0 C.
HUMIDITY : 40 to 90% RH (non condensing)
VIBRATION : Severe vibration can affect the accuracy of weighing and damage
electric / electronic components.
AIR : The surrounding air should be dust free and not contain any corrosive
gasses or materials which could adversely affect the equipment.
PROTECTION : IP65.
ELECTROMAGNETIC:
Heavy electrical equipment should not be installed close to the weighing
FIELDS equipment.
INCOMING AND
: Relays and contactors connected to the equipment must have reliable and
OUTGOING SIGNALS effective interference suppression. This also applies to other equipment
located within a distance of 3m from out equipment. Cabling must be
performed according to normal practice.
NOTES : - WELDING on or in the vicinity of the equipment is strictly
prohibited.
- STATIC loads, caused by thunderstorms, have to be prevented from
developing by use of reliable lightning conductors.
- ENSURE that the cooling of the equipment is not obstructed.
8.3 MAINTENANCE
The unit does not require any routine maintenance. It may be necessary to perform periodic check of the
calibration of the scale due to mechanical reasons. The frequency of the calibration checks depends on the
application condition and on the required measuring accuracy.
It may happen that, in exceptional conditions, the unit locks on a wrong memory location and it is no
possible to restart because the keyboard is not operative.
To restart it is necessary to switch the power OFF the ON again.
8.4 SERVICE
- There are no serviceable parts. The unit may be repaired by trained personal only. The user may
check loadcell connection and power supply.
- LOADCELLS
Loadcells are reliable and very rarely present errors. Check input and output resistance, and
resistance between any terminal and shield. Check loadcell connection and cable.
- POWER SUPPLY
Check the ac/dc supply. If the power is present but there are no 5 VDC on the board check the
200 mA auto-reset fuse. Replace if necessary with same type fuse only.