Digi Powering Up the DC-190, Location of AC Power Cord Receptacle Load Cell Cable

2.3Powering Up the DC-190

The DC-190 can be operated either from an AC power source or with an optional rechargeable battery pack (DC power). The DC power allows the unit to be completely portable. Instructions for DC operation are contained in Section 2.3.3.

2.3.1AC Power Source

To power-up the DC-190 using the AC power cord:

1.Connect female end of AC power cord (Figure 2-4) under scale base.

LOAD CELL CABLE

AC POWER CORD RECEPTACLE

Figure 2-4. Location of AC Power Cord Receptacle and

Load Cell Cable

2.Connect load cell cable from scale to Cable Port 1 in the back of the keyboard (Figure 2-5).

3.Plug the AC power cord into a grounded 115 VAC receptacle.

CABLE PORT 2

CABLE PORT 1

Figure 2-5. Scale Base Connector Ports

4.Press ON/OFF and allow scale to warm up for 10 minutes. The display momentarily shows the revision number, shows all digits from 0 to 9 in a count-up mode, goes blank, shows all 8s, and then enters normal weighing mode.

If the scale is connected to AC power while in the OFF condition, no warm-up is necessary.

NOTE: If the scale displays erratic data, it may be caused by a power transient. Turn the scale off and momentarily unplug it from the wall outlet. Then restart by plugging the scale back in and pressing ON/ OFF key. The scale will go through a display check; no warm up is needed.

2.3.2DC Battery Pack Replacement/Installation

An optional DC battery pack is available and may be purchased from RLWS to ship with the scale or retrofit in the field.

The battery pack is located in the bottom of the scale base and partial disassembly is required to install or replace it. Use the following procedure to install or replace the battery pack.

To prevent load cell damage, reinstall Caution setscrews before replacing battery.

1.Unplug scale from power source.

2.Remove scale platter.

3.Remove the four platform support screws from the left-hand platform support assembly (shown in Figure 2-6). Remove the four screws from the right-hand platform support assembly.

4.Remove both platform support assemblies and set aside.

NOTE: The single-platform scale has four platform support (spider) screws while the dual-platform scale has four screws for each of the two platform supports.

REMOVE PLATFORM SUPPORT SCREWS (DUAL-PLATFORM INSTALLATION)

Figure 2-6. Removing Platter Support Screws and Platter

Support on a Dual-Platform Scale