Upright 503502-000, Service & Parts Manual

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Page 3-5
Maintenance 3.4 - Battery Maintenance
TL50 Service & Parts
C
HARGE BATTERY AS FOLLOWS
:
1. Check the fluid level. If the electrolyte level is lower than 10mm (3/8 in.) above the plates,
add clean, distilled water only.
2. Connect the charger plug to a properly grounded outlet of the proper voltage and frequency.
3. The charger turns on automatically after a short delay. The ammeter will indicate DC charg-
ing current.
4. The charger turns off automatically when the batteries are fully charged.
B
ATTERY
C
ELL
E
QUALIZATION
Figure 3-2: Power Module
The specific gravity of the electrolyte in the bat-
tery cells should be equalized monthly. To do
this, charge the batteries as outlined in Battery
Charging. After this initial charge, check the
electrolyte level in all cells and add distilled
water as necessary. Turn the charger on for an
additional eight hours. During this time, the
charging current will be low (four amps) as cells
are equalizing.
After equalization, the specific gravity of all cells
should be checked with a hydrometer. The tem-
perature corrected specific gravity in this state
should be 1.260. If any corrected readings are
below 1.230, the batteries containing such cells
should be replaced.
Do not check the specific gravity in a cell to which water has just been added. If there is not
enough electrolyte in a fully charged cell to obtain a sample for the hydrometer, add water and
continue charging for one to two hours to adequately mix the water and electrolyte.
W A R N I N G
! !
Charge the battery only in a well-ventilated area.
Do not charge the battery when the work platform is in an area containing
sparks or flames.
Permanent damage will result if the battery is not immediately recharged
after discharging.
Never leave the charger unattended for more than two days.
Never disconnect the cables from the battery when the charger is operating.
Keep the charger dry.
Never operate the machine while the charger is plugged in.
Remove to check
fluid