Salter Brecknell 7820B - Manual (Page 5)

5 7820 B UPS Revenue Recovery Scale User’s Manual
Operation
ZERO key
If the scale does not display
0.00 weight, press the ZERO
key before placing the parcel
on the scale.
Keys
Figure 2
Front panel keys
Battery Operation
Charging The Battery
Figure 1
Battery compartment
Each unit includes a sealed lead acid battery. A fully charged battery will
provide power to the unit for 12 to 40 hours (depending upon display back-
light usage). When the scale detects the battery has approximately 1 hour of
use remaining before full shutdown, the display will flash “LobAt” every 15
seconds.
To charge the battery, plug the AC adapter into the rear of the scale. The
AC PWR annunciator will indicate the unit is plugged into a live AC outlet
and charging the battery. After 5 minutes of no activity, the scale will go into
sleep mode, and display CHArG. To remove this message and use the
scale, press the ZERO key.
Remove the cover on the underside of the scale by loosening the 2 screws.
See Figure 1. Unplug the battery cables and replace with a new battery,
black cable to (-) terminal, red cable to (+) terminal. Refit the cover and
tighten the screws.
The NCI Model 7820 B has two keys to operate the scale plus a RESTART
pushbutton. See Figure 3.
The ZERO key performs
three functions:
1. Pressing the ZERO key
will reset the scale to
zero weight.
2. When in the Configura-
tion Mode menu, this key
scrolls the display to the
next selection.
3. If the scale is drawing
power from the battery only and the AC adapter is not connected, press
and hold this key for 3 seconds to turn the scale OFF. To turn the scale
ON, press the RESTART pushbutton located at the rear of the scale (or
use the AC adapter to connect the scale to an AC outlet).
Battery Replacement