Rice Lake Farm Bars - IQ plus 390-DC - Manual (Page 8)

Installation 7
2.0 Installation
This section describes procedures for connecting load
cell and serial communications cables to the
390-DC
indicator. Instructions for battery and CPU board
replacement are included, along with assembly
drawings and parts lists for the service technician.
Use a wrist strap to ground yourself and
protect components from electrostatic
discharge (ESD) when working inside the
indicator enclosure.
2.1 Unpacking and Assembly
Immediately after unpacking, visually inspect the
390-DC to ensure all components are included and
undamaged. The shipping carton should contain the
indicator with attached tilt stand, this manual, and a
parts kit. If any parts were damaged in shipment,
notify Rice Lake Weighing Systems and the shipper
immediately.
The parts kit contains the items listed below:
• Identification label.
• Capacity (PN 94422) and identification
labels. Identification label (PN 49958)
includes replacement overlay decals for
indicators using units other than lbs and kgs.
• 3-position (PN 15888) and 7-position (PN
23165) pluggable terminal blocks for load cell
and serial communications connectors.
• One 8-32NC x 7/16 fillister head screw (PN
30623). This screw occupies the hole below
the setup switch access screw on the indicator
backplate (see Figure 2-4 on page 9).
• Four 8-32NC x 3/8 machine screws (PN
14862) for the indicator backplate (see #10 in
Figure 2-7 on page 12).
• Five neoprene washers (PN 45042) for
backplate screws included in the parts kit.
• Four rubber bumpers (“feet”) for the tilt stand,
PN 42149.
• Two each of grounding clamps (PN 67550),
external tooth lock washers, (PN 15133), and
k e p n u t s ( P N 1 4 6 2 6 ) f o r c a b l e s h i e l d
grounding against the enclosure.
• Two ferrites (PN 66730), used to reduce
susceptibility to radiate electromagnet
interference and EMI installation instructions
(PN 67970).
2.2 Enclosure Disassembly
The indicator enclosure must be opened to connect load cell and communications cables
Power-off the indicator and disconnect the AC adapter, if necessary. Place the indicator face-down on an
antistatic work mat. Remove the screws that hold the backplate to the enclosure body, then lift the backplate
away from the enclosure. Disconnect battery cable to connector J3, then set the backplate assembly aside.
2.3 Cable Connections
The 390-DC provides two cord grips for cabling into the indicator: one for the load cell cable, the other for serial
communications.
Figure 2-1. 390-DC Backplate, Showing Key Component Locations
Caution
Battery cover
Serial communications
cable cord grip
Load cell cable
cord grip
AC adapter
port cover