MSI-5300 Load Ranger Electronic Wheel Load Weighers
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User Guide
Page 11
M E A S U R E M E N T S Y S T E M S I N T E R N A T I O N A L
than 50% of its capacity (about 15 hours of operation on a fully charged
battery) it will not freeze at temperatures above -35
°
F (-37
°
C). There-
fore, to prevent freezing we recommend that when the temperature is
below 16
°
F (-9
°
C) the battery be recharged after no more than 15 hours
of operation.
3) Charging
The battery charger will charge the battery at temperatures as low as -5
°
F
(-20
°
C). However, a battery with frozen electrolyte must not be re-
charged until the electrolyte has had time to thaw. If freezing is sus-
pected, allow the battery to thaw for several hours at room temperature
before attempting recharge.
CALIBRATION PROCEDURE
A maintenance check is accomplished by periodically comparing the CAL
number displayed during the power up self-test sequence with the factory
established CAL number stamped on the serial number plate on the scale or a
new CAL number established at the most recent recalibration. This check only
verifies the proper operation of the electronic portion of the scale. For com-
plete scale accuracy verification and/or recalibration follow the steps below:
1) With the scale turned on, exercise the scale by loading it to capacity and
unloading. Repeat this procedure three times.
2) With no weight on the scale, turn the unit off and then on again. Wait for
the scale to complete the power-up self-test. Record the zero off set
number which follows the P-XX program number Verify the display
reads “00” after the self-test sequence is completed.
3) Unscrew the calibration access plug and locate the zero adjustment screw
(See Figure 6).
Figure 6
Calibration Adjustment