OHAUS Valor 1000W, Service Manual

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CHAPTER 1 GETTING STARTED
Ohaus Corporation www.ohaus.com 1-4 Valor
™ 1000W Series Service Manual
4 7-segment, 6-digit LED display
5 Center of Zero, Net, Stable, Sum, lb, kg indicators
6 Over, Accept, Under Checkweigh indicators
7 Control Buttons
8 Adjustable feet
9 Power input jack
TABLE 1-3. FUNCTIONS OF DISPLAY CONTROLS
1.6.2 Power ON/OFF
To turn the scale on, press the button On/Off on the control panel. The scale performs a display
test, momentarily displays software version, and then enters the active weighing mode. To turn
the scale off, long press the button On/Off.
The Valor 1000W can operate on either AC Power, with the included AC adapter, or on the
internal rechargeable battery. The scale automatically switches to battery operation if power
fails while the scale is on.
Before using the scale for the first time, the battery should be fully charged for up to 12 hours.
During charging, the battery Charge indicator remains lit. The scale can be operated during
charging. The battery is protected against over-charging and the scale can remain connected to
the AC power line.
1.7 HOW LOAD CELLS OPERATE
Load Cells are devices that convert force into a signal. The Valor 1000W has a Strain Gauge
Load Cell, which is made from a metal beam with holes drilled in it. Strain gauges are affixed to
the beam at the top and bottom to measure changes in the beam due to deflection. The gauges
are bonded very securely to the metal, where they sense very small deflections in the metal
caused by the load being applied to the cell. Because the signal levels are very small, the
Button Action Function
Short Press Turns scale on
Long Press Turns scale off
Menu function Shift to next digit when setting parameters, or step through menu settings
Primary function Sets display to zero
Menu function Confirm settings
Long Press Enters menu mode
Menu function Save settings and exit the menu
Primary function Stores displayed weight in accumulation memory
Display accumulation data when display is at zero
Menu function Increment displayed value, or toggle through menu settings
Primary function Tares weight of item on pan
Menu function Decrement displayed value, or toggle through menu settings