Problem
Possible Reason
Processing Methods
Poor braking condition
Brake compensator is loose
Adjust brake draw-bar
Brake shoe is worn
Replace the brake shoe or brake
cable
Vehicle cannot move
Without control power
Check the control fuse: if it is
broken, replace. Check jiggle switch
on the charge socket for looseness.
Fasten it to the connection cables.
Turn on the key-lock switch and if
the input and output cables cannot
be connected, replace a with new
key-lock switch. If the battery does
not have a normal working voltage,
charge it as soon as possible.
Operation panel is disabled
Check the connection cables on
the operation panel for looseness;
if loose, fasten it. When using the
direction selector, the control
contact joint should be connected.
If disconnected, replace.
Low voltage and controller protec-
tion
Charge battery as soon as possible
Running with too heavy a load for
a long period that results in the
controller over-heat protection.
After the temperature of the con-
troller comes down, the protection
status should recover.
Specific Gravity Testing
A cost effective way to identify a poorly performing battery is to use a hydrometer
to identify a battery in a set with a lower than normal specific gravity. Once the
particular cell or cells that are the problem are identified, the suspect battery can
be removed and replaced. At this point there is nothing that can be done to salvage
the battery; however, the individual battery should be replaced with a good battery
of the same brand, type and approximate age.
1. Do not add water at this time.
2. Wash hydrometer with deionized water.
3. Fill and drain the hydrometer 2 to 4 times before pulling out a sample.
4. There should be enough sampled electrolyte in the hydrometer to com-
pletely support the float.
5. Take a reading, record it, and return the electrolyte back to the cell.
6. Check electrolyte specific gravity for each cell, testing one cell tempera-
ture by thermometer.
7. Check all cells in the battery, repeating the steps above.
8. Replace the vent caps and wipe off any electrolyte that might have been
spilled.
30
Содержание BN72-08-AC-Autodrive-M
Страница 34: ...34 6 Electrical Diagrams...
Страница 35: ...35...