Edition 2 Chapter 1 Page 1-50
Feb/2013 Maintenance and Service
1.19 BATTERY MAINTENANCE AND SERVICE
The batteries in the crane align with national standard GB/T 5008.1 - 2005. If the
electrical system is free of malfunctions, keep the batteries fully charged. If the
batteries do not charge or cannot hold voltage, examine the generator and voltage
regulator for malfunction.
Do an inspection of the batteries and the battery storage area as follows:
A. When the batteries are fully charged, make sure that the acid level is between
0.4 and 0.6 in (10 and 15 mm) above the top edge of the battery plates.
B. Examine the battery cell caps as follows:
• The caps are tight and air vents are not blocked.
• The batteries and the storage area are dry.
C. Usual charge refers to the charge of battery after use. When you measure the
level of charge on a battery, the voltage on a usual charged battery is 1.2 - 1.5
times that of a discharged one. When you find a battery that is too low,
measure the voltage level of each cell. If you find a cell that has less than 1.75
volts, stop the check and charge the battery.
D. Charge a usual charged battery as follows:
(1) Make sure that the charger power is OFF and put the charger power plug
into the power socket. If the charger has a voltage selector switch, set it
to the correct voltage of the battery/batteries you charge. When you
charge two batteries (batteries in series) at the same time, set the voltage
selector switch to 24 V.
(2) Connect the positive (+) and negative (-) clips to the battery terminals.
Adjust the time to charge interval by the charger operating manual. Do
not do a rapid charge on the batteries.
(3) Set the charger power switch to ON and adjust the current selector
(below 20 A). When the battery electrolyte temperature increases to 113°
F (45° C), immediately stop charge.
(4) The battery charge can continue for approximately 5 - 10 hours. When
the battery/batteries are fully charged, use a voltmeter to measure the
voltage. The voltage in the battery must be > 15 volts or electric eye is in
good condition.
(5) Set the current rotary switch and the charger power switch to OFF.
(6) Disconnect the positive (+) and negative (-) clips from the battery
terminals.
(7) Remove the charger power plug.
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