Chapter Four Maintenance; Regulated Maintenance; Precautions - Narada 12NDT26 Operation Manual

1. Regulated Maintenance

1.1 Instruments and tools needed:
1.1.1 Digital Voltage Meter
1.1.2 Insulated wrench
1.1.3 Internal resistance, conductive, instant loading experiment instruments
1.2 Monthly Maintenance
— Keep the battery-room clean.
— Measure and record the ambient temperature of the battery-room.
— Check each battery's cleanness; check damage and overheating trace of the
terminal, container and lid.
— Measure and record the total voltage and floating current of the battery
system.
1.3 Quarterly Maintenance
— Repeat monthly inspection.
— Measure and record floating voltage of every on-line battery. If more than one
battery's voltage is lower than 13.1V after temperature adjustment, the
batteries need to be equalization charged. If the problem still exists after
adopting above-mentioned measures, the batteries need yearly maintenance or
even three years' maintenance. If all methods are ineffective, please contact
us.
1.4 Yearly Maintenance
— Repeat quarterly maintenance and inspection.
— Check whether connectors are loose or not every year.
— Make a discharge test to check with exact load every year, discharge 30-40%
of rated capacity.
1.5 Three-year Maintenance
— Make a capacity test every three years and every year after six years'
operation. If the capacity of the battery decreases to lower than 80% of rated
capacity, the battery should be replaced.

2. Precautions

2.1 Insufficient Charge
Operation manual for Acme series V4.2

Chapter four Maintenance

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