5-32
Battery
Warning: 1) The battery contains sulfuric acid liquid, which is highly corrosive. Please keep
it away from children. Users should wear protective glasses and rubber gloves when
operating the battery. Once the eyes, skin and clothes are splashed with sulfuric acid,
wash them with plenty of water immediately, and go to the hospital for treatment in serious
cases.
2) The battery will generate hydrogen and oxygen during charging. Once it catches an
open flame or the exhaust port is blocked, it will cause explosion. Therefore, the battery
should be far away from the open flame to avoid short circuit.
3) The battery case is made of polypropylene by injection molding, which is flammable and
should be kept away from open fire.
1. Battery storage
1) This series of products are lead-acid batteries with charged fluid. They should be stored in a dry, clean and well
ventilated environment at 5~25
℃
. They should be free from direct sunlight and at least 2 m away from the heat source.
If the ambient temperature is too high, the performance of the battery will be greatly affected.
2) The battery shall not be placed upside down and horizontally, and shall not be subjected to any mechanical impact and
heavy pressure.
3) The storage period of this series of batteries at room temperature is 6 months, and the batteries can be used without
recharging within 6 months. If the storage period of the battery exceeds 6 months, it can still be used after recharging.
2. Charge the battery
Hydrogen and oxygen are produced by electrolyzing water in the later stage of battery charging, which causes water loss.
The higher the charging voltage, the more water loss. This series of batteries do not need to be filled with water during
use, so the constant voltage charging method is highly recommended and the constant current charging method is
avoided as far as possible.
2.1 Recharge the battery
2.1.1) Constant current charging method
Charge the battery for 2-4 hours at the current (A) that is one tenth of the battery rated capacity at the rate of 20 hours.
2.1.2) Constant voltage charging method
Charge the battery at a constant voltage of 16V for 16h (the maximum current shall not exceed 25A).
2.2 Normal battery charging
2.2.1) Charge the battery at the current {A) that is one twentieth of the battery rated capacity at the rate of 20 hours until
the battery voltage reaches 14.4V, and continue charging for 2-3 hours.
2.2.2) Charge the battery at a constant voltage of 16.OV for 24h (the maximum current shall not exceed 25A).
1) The battery will produce gas during charging, and the vent hole on the battery
should be checked regularly to avoid being blocked, so as to avoid battery
explosion.
2) When charging the battery, connect the positive pole of the charger with the
positive pole of the battery, and connect the negative pole of the charger with the
negative pole of the battery. Reverse charging is strictly prohibited.
3) During the charging process, if the temperature of battery electrolyte exceeds 45
℃
, the charging voltage or charging current should be reduced as appropriate to
prevent electrolyte splashing due to excessive temperature.
Summary of Contents for U27
Page 1: ...U27Hydraulic Excavator Instruction Manual Guangxi Yuchai Heavy Industry Co Ltd...
Page 5: ...1 1 Preface...
Page 17: ...2 1 Safety regulations...
Page 44: ...3 1 Parts introduction...
Page 49: ...3 6 Panel meter Oil level pointer Timing display Water temperature pointer Indicator area...
Page 55: ...4 1 Operation guide...
Page 89: ...5 1 Maintenance...
Page 130: ...6 1 Accessories guide...