Hitachi ZAXIS 450LC-3, Руководство оператора

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MAINTENANCE
7-95
Check electrolyte specific gravity --- every one month
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WARNING: Battery gas can explode. Keep sparks and
flames away from batteries. Use a flashlight to check
the battery electrolyte level.
Sulfuric acid in battery electrolyte is poisonous. It
is strong enough to burn skin, eat holes in clothing,
and cause blindness if splashed into the eyes.
Never check the battery charge by placing a
metal object across the posts. Use a voltmeter or
hydrometer.
Always remove the grounded (−) battery clamp first
and replace it last.
Avoid hazard by:
1. Filling batteries in a well-ventilated area.
2. Wearing eye protection and rubber gloves.
3. Avoiding breathing fumes when electrolyte is
added.
4. Avoiding spilling or dripping electrolyte.
5. Using proper booster battery starting procedures.
If you spill acid on yourself:
1. Flush your skin with water.
2. Apply baking soda or lime to help neutralize
the acid.
3. If splashed in eyes, flush with water for
10 to 15 minutes. Get medical attention
immediately.
If acid is swallowed:
1. Drink large amounts of water or milk.
2. Then drink milk of magnesia, beaten eggs, or
vegetable oil.
3. Get medical attention immediately.
IMPORTANT: Check the specific gravity of the
electrolyte after it is cooled, not
immediately after operation.
Check the electrolyte specific gravity in each battery
cell.
The lowest limit of the specific gravity for the
electrolyte varies depending on electrolyte
temperature. The specific gravity should be kept
within the range shown below. Charge the battery if
the specific gravity is below the limit.
Replace Batteries --- as required
Your machine has two 12-volt batteries with negative (−)
ground.
If one battery in a 24-volt system has failed but the other is still
good, replace the failed battery with one of the same type. For
example, replace a failed maintenance-free battery with a new
maintenance-free battery. Different types of batteries may
have different rates of charge. This difference could overload
one of the batteries and cause it to fail.
Recommended range of specific gravity by electrolyte temperature
Working Range
40°C
(104°F)
1.21 1.22 1.23 1.24 1.25 1.26 1.27 1.28 1.29 1.30 1.31 1.32
Specific gravity of battery fluid
Fluid temp.
20°C
(68°F)
0°C
(32°F)
–20°C
(–4°F)
–40°C
(–40°F)
M104-07-054