DAF CF65, CF75, CF85 Series . Manual — part 507
5
CF65/75/85 series ≥0E621376
Safety instructions
BATTERIES
1-1
1. SAFETY INSTRUCTIONS
1.1 BATTERIES
-
The sulphuric acid in the batteries is an
aggressive and poisonous liquid. While
working on batteries, wear protective
clothing, gloves and safety goggles.
In case of contact with clothes, skin or eyes,
wash immediately with copious amounts of
water. Consult a doctor in case of contact
with the eyes or skin.
-
Always remove the earth lead first before
working on batteries.
When connecting battery leads, always
connect the earth lead last.
-
Always handle batteries carefully and hold
them upright.
-
When topping up batteries, never allow the
electrolyte level to rise more than 10 mm
above the plates or above the level
indicator.
-
Never put tools or other materials, which
could accidentally short circuit the battery
poles, down on the batteries or in the
vicinity of batteries. Short-circuited battery
poles may cause the battery to explode.
-
Secure the batteries well after completing
the work, but not too tightly.
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BATTERIES
Safety instructions
CF65/75/85 series ≥0E621376
1-2
1.2 BATTERY CHARGING
-
An explosive gas mixture may be released
during battery charging. Only charge
batteries in a well-ventilated area.
-
Never smoke or allow naked flames or
sparks in the vicinity of the battery.
-
Allow frozen batteries to thaw before
charging.
-
Switch the charger off before the leads to
the battery are disconnected.
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CF65/75/85 series ≥0E621376
Charging batteries
BATTERIES
2-1
2. CHARGING BATTERIES
2.1 GENERAL
-
A battery may only be charged using DC
current. Connect the positive pole of the
battery to the positive terminal (+) of the
charger, and the negative pole of the battery
to the negative terminal (--) of the charger.
The cell sealing plugs may remain on the
battery during charging (with the exception
of fast charging).
The cell voltage will rise during charging.
This increase in voltage depends on the
charging current applied and the
temperature. During normal charging, the
cell voltage will rise from about 2 volts/cell
to about 2.65 volts/cell. If a charging voltage
of about 2.35 to 2.4 volts/cell (about 14.2
volts in a 12V battery) is exceeded, this will
initiate active gas development.
As a consequence of the rise in voltage
during charging, the charging current will
gradually fall, as a rule.
Overcharging will reduce the service life of
a battery.
-
If the charging of the battery is continued
after it has been fully charged (even with a
low current), this will lead to corrosion
(corrosive attack) of the grids of the positive
battery plates. This type of wear leads to
premature redundancy of the battery.
Depending on the capacity of the charger,
the normal charging time is between 8 and
15 hours.
If during charging, the temperature of the
battery acid exceeds 55_C, charging should
be stopped. High temperatures reduce the
service life of the battery.
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BATTERIES
Charging batteries
CF65/75/85 series ≥0E621376
2-2
-
A battery should be considered to be
charged when the charge voltage stops
rising for a period 2 hours and the acid
density (relative density) has reached the
nominal value (for example 1.28 kg/dm
3
)
and it rises no further.
-
A charged battery must be used
immediately. If this is not possible, maintain
the battery as described in the “Storage of
batteries” section.
-
A discharged battery must be charged as
soon as possible. If a discharged battery is
not recharged, the battery plates may
become sulphated (i.e. they may become
hard), which will lead to permanent loss of
capacity.
-
Never disconnect the battery terminals
when the engine is running to prevent
damage to electronic components.
-
Connect the positive lead (+) of the battery
charger to the positive terminal (+) of the
battery first and then the negative lead (--)
to the negative terminal (--).
-
Switch off the battery charger before
disconnecting the battery charger leads, to
avoid sparking and to eliminate the risk of
explosion.
-
To disconnect, release the negative terminal
(--) first and then the positive terminal (+).
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