Rice Lake 320IS Plus Intrinsically Safe Digital Weight Indicator - I/O Module for Intrinsically Safe Systems Installation Manual - Manual (Page 10)

6 I/O Module Installation Manual
2.9 Fuse Replacement
Use the following steps to replace fuses in the I/O
Module . See Figure 2-1 on page 2 for fuse locations.
To protect against the risk of fire, only
replace fuses with same type and rating
(see Section 4.1 on page 10 for proper
fuse types and ratings).
1. Disconnect power to the I/O Module .
2. Place I/O Module on an antistatic work mat.
Loosen the clamps of the enclosure body, then
open the
I/O Module (see Figure 2-6 on page
8).
3. Remove fuse(s) from holders on power
supply bracket and replace with new fuse(s) –
(RLWS PN 80869).
4. Replace cover on enclosure and torque
clamps until they bottom out and gasket fully
compresses to maintain NEMA 4X integrity.
2.10 I/O Module Mounting
The I/O Module is capable of being mounted to any
surface in the safe area using the mounting holes of
the enclosure (see Figure 2-5 on page 7). Use 1/4" or
larger mounting hardware.
NOTE: Mounting surface must be capable of holding
four times the weight of the I/O Module and wiring.
2.11 Battery Replacement
The lithium battery on the I/O Module board maintains
the real–time clock and protects data stored in the
system RAM when it is not connected to AC power.
Data protected by the I/O Module board battery
includes time and date.
Use Revolution III to store a copy of the indicator
configuration on a PC before attempting battery
replacem ent. If an y d ata is lost, the in dicator
configuration can be restored from the PC.
Watch for the LOWBAT warning on the LED display
and periodically check the battery voltage of your
320IS/320IS Plus . 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 seven years.
See Figure 2-1 on page 2 for battery board battery
location and orientation (positive side up).
Risk of explosion if battery is replaced with incorrect
t y p e . D i s p o s e o f b a t t e r i e s p e r m a n u f a c t u r e r
instruction.
Caution