Electrical System - Hitachi EX27U Operator's Manual

H. ELECTRICAL SYSTEM
Batteries
1. Check battery electrolyte level and terminals
CAUTION: Battery gas can explode. Keep sparks
and flames away from batteries. Use a flashlight
to check battery electrolyte level.
Do not continue to use or charge the battery
when the electrolyte level is lower than specified.
Explosion of the battery may result.
Sulfuric acid in battery electrolyte is poisonous. It
is strong enough to burn skin, eat holes in cloth-
ing, and cause blindness if splashed into eyes.
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. Use proper booster batteries start procedure.
If you spill acid on yourself:
1. Flush your skin with water.
2. Apply baking soda or lime to help neutralize
the acid.
3. Flush your eyes with water for 10 to 15 min-
utes. 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: Add water to batteries in freezing
weather before you begin operating your
machine for the day, or else charge the
batteries.
a. The electrolyte level must be between the upper and
lower level marks on the battery case. Supply distilled
water if necessary; be sure to charge the battery after
doing so.
CAUTION: Always remove grounded (–) battery
clamp first and replace it last.
b. Always keep terminals and vent plugs, located on top
of the battery, clean to prevent battery discharge.
Check battery terminals for looseness and rust. Apply
petroleum jelly to the terminals to prevent corrosion.
MAINTENANCE
7-50
SA-036
M409-07-072