Rice Lake 920i Installation Manual V3.12 - Manual (Page 21)

Installation 15
2.8 Fuse Replacement
Fuses for the universal and deep enclosure models of
the
920i
are located under a cover plate on the outside
of the enclosure. Remove the cover plate, replace the
fuses, and reinstall the cover plate (see Figure 2-13).
To protect against the risk of fire, replace
fuses only with same type and rating fuse.
See Section 10.14 on page 124 for
complete fuse specifications.
Interface board and fuse access cover
plates must be in place for use in NEMA
4X/IP66 applications.
l
Figure 2-13. Interface Board and Fuse Locations,
Universal Model
2.9 Battery Replacement
The lithium battery on the CPU board maintains the
real-time clock and protects data stored in the system
RAM when the indicator is not connected to AC
power.
Data protected by the CPU board battery includes
time and date, truck and tare memory, onboard
database information, and setpoint configuration.
Use
iRev to store a copy of the indicator configuration
on a PC before attempting battery replacement. If any
data is lost, the indicator configuration can be restored
from the PC.
NOTE: Memory option card data is also protected by a
lithium battery. All database information stored on a memory
card is lost if the memory card battery fails.
Watch for the low battery warning on the LCD display
and periodically check the battery voltage on both the
CPU board and on any installed memory option cards.
Batteries should be replaced when the indicator low
battery warning comes on, or when battery voltage
falls to 2.2 VDC. Life expectancy of the battery is ten
years.
Replacement Procedure
Before replacing the battery, place the indicator in
setup mode, then press
S AV E / E X I T
to save
battery-backed memory (NVRAM) to flash. This
operation saves the latest configuration information,
including setpoint values, stored strings and data, and
the onboard database, to flash memory.
Return to weigh mode, power off the indicator, and
replace the battery. Use care not to bend the battery
retaining spring.
When power is restored, a message is shown stating
that battery-backed memory is corrupt. Press
ENTER
to restore the values saved in flash memory.
See Figure 2-5 on page 11 for CPU board battery
location and orientation (positive side up).
Risk of explosion if battery is replaced
with incorrect type. Dispose of batteries
per manufacturer instruction.
2.10 Parts Kit Contents
Table 2-6 lists the parts kit contents for the universal
model of the
920i
.
Torque fuse and interface board access covers to
8 in-lb (0.90 N-m)
Interface Board Power Switch
PN Description
14626 Kep nuts, 8-32NC (4)
14862 Machine screws, 8-32NC x 3/8 (12)
75068 Sealing washers (14)
15133 Lock washers, No. 8, Type A (4)
30623 Machine screws, 8-32NC x 7/16 (2)
15631 Cable ties (4–single A/D, 6–dual A/D)
15665 Reducing glands for 1/2 NPT cord grips (2)
15887 6-position screw terminal for load cell
connection (1–single A/D, 2–dual A/D)
19538 Cord grip plugs (4–single A/D, 3–dual A/D)
42350 Capacity label (1–single A/D, 2–dual A/D)
53075 Cable shield ground clamps (4)
70599 6-position screw terminals for J2 and J10 (2)
71126 4-position screw terminal for J9 and optional
keyboard connection (2)
71125 3-position screw terminal for J11 (1)
42149 Rubber feet for tilt stand (4)
15144 Nylon washers for tilt stand, 1/4 x 1 x 1/16 (2,
universal model only)
68403 Wing knobs for tilt stand (2)
Table 2-6. Parts Kit Contents