OHAUS EB SERIES, Руководство по обслуживанию

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CHAPTER 2 DIAGNOSIS
EB Series Scales Series Service Manual 2-11 Ohaus Corporation www.ohaus.com
2.9 TESTING THE BATTERY
The EB Series Scales contains a rechargeable, 6.0 Volt, 5.0 Ampere rated, Lead-Acid Battery.
2.7.1 Precautions for Battery Handling
WARNING! DEATH OR SERIOUS INJURY CAN OCCUR
– Charge the battery only with the charger in the scale. Charging the battery under
any other conditions may cause the battery to overheat, emit hydrogen gas,
Leak, ignite or burst.
– Operate the battery at normal temperature range as specified for the scale.
– Do NOT short the battery terminals under any conditions.
– Do NOT dispose of the battery in incinerators, or crush or try to open. Dispose of
the defective battery in accordance with local regulations for lead-acid type
batteries.
CAUTION
– Check the battery for any sign of irregularities in appearance. If there is any
damage to the case such as cracks, deformation or leakage, replace the battery
with a new one.
– Do NOT charge the battery with the charger terminals reversed.
2.9.2 Battery Tests
A new battery when installed in the EB Series Scales will provide many years of useful service.
The length of service depends upon the type of use of the scale. If left connected to the AC
Adapter all of the time, the battery receives a small charge when the battery voltage is low,
service life can be many years. The EB Series Scales can be operated for up to 80 hours per
charge. Battery life can be maximized by frequent charging.
1. Upon receipt of the scale, plug in the AC Adapter to a power source and the scale.
Allow the battery to charge. If the battery required a charge, the battery indicator on
the front of the LCD display will indicate charging. Green indicates fully charged,
yellow indicates a partial charge and red, indicates the battery is nearly discharged.
2. Refer to Section 3.1 and remove the Top Housing. Leave the Membrane Switch on
the cover connected to the scale.
3. With the AC Adapter connected, measure the battery voltage at the battery
terminals; the voltage should be approximately 6 to 7 Volts dc when charging. The
voltage should be above 6.0 Volts dc ten minutes after charging stops.
NOTE : If the scale operates less than 80 hours, charge the battery and turn on the
scale and test how long the scale operates. If the scale operates less than 40 hours
with no backlight, the battery should be replaced. This is 50% capacity.
4. If the battery requires replacement, refer to Section 3.6, charge the new battery
overnight and check scale performance.