OHAUS EC Series, Руководство по обслуживанию

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3-6
CHAPTER 3 SCALE TESTING AND CALIBRATION
Calibration Test (Cont.)
3. Upon completion of calibration, the Main PC Board can be further checked using the Simulator to
simulate various weight values. If simulator settings and weight reading on the scale agree, the
Main PC Board is functional. If the scale readings vary, or do not agree with readings in Table
3-3, the Main PC Board is defective and should be replaced.
4. Remove power from the scale and proceed with Section 4.3 and replace the Main PC Board.
5. After Main PC Board replacement and assembly of the scale, proceed with Performance Tests in
Section 3.6.
3.5 TESTING THE BATTERY
The EC Series Scales contains a rechargable, 6.0 Volt, 5.0 Ampere rated, Lead-Acid Battery.
3.5.1 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.
3.5.2 Battery Tests
A new battery when installed in the EC 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 EC 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 4.1 and remove the Top Housing. Leave the Membrane Switch on the cover
connected to the scale.