Technical Information - Elettro CF START 420 Mode D'emploi

GB
READ CAREFULLY
•
Read the instructions before using the machine.
•
Do not expose unit to rain or snow.
• Do not use charger if cords or wires are defective. Replace immediately.
• Any supply extension cable should be of the correct cross sectional area.
• Batteries generate explosive gas fumes when charging. Use charger in a well ventilated room. Do not smoke, strike a match, cause a spark or have
an open flame near battery while charging.
• Battery acid is corrosive. Avoid contacts with skin and eyes.
• While charging battery, leave the battery caps loose
• Ensure that electrolyte level in each battery cell is some millimetres higher than the plates.
•
Place the charger as far away as possible from the battery to be charged.
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Always switch the charger off and remove the power supply cord plug from mains supply before connecting or disconnecting the charger clamps.
•
To avoid that sparks may develop at the end of the clamps, before switching on the charger, ensure tight and cleaned connections between the
charger clamps and the battery terminals.
•
Do not short circuit the charger clamps. Do not allow clamps to touch one another at any time. Ensure that there is no short circuit on the battery
poles otherwise the battery may explode.
•
Batteries left discharged may be seriously damaged by sulphation and can easily freeze in a low temperature room.
•
Never charge frozen batteries !!
•
Do not position your face above batteries at any time while making connections and during charging process.
•
Battery disposal: Only return to an authorised battery disposal company.
•
Battery charger disposal: Return metallic or electronic parts to authorised waste centres.
• This equipment is unsuitable for starting vehicles with electronic control units.
This battery charger is projected to charge lead batteries for cars or boats. The use of this machine for other aims is unadvised and
considered an incorrect use of the battery charger and causes the loss of the warranty.

TECHNICAL INFORMATION

To determine the percentage of charge left in a battery, use a hydrometer to measure the specific gravity of the battery electrolytic fluid and follow the
table given below:
% of charge 100%
Specific gravity 1,27
Having checked the specific weight, use the following formula to determine the time required to fully charge a battery in good condition.
In the example: a 50Ah battery, with 25% residual charge, to be charged at a charging current rate of 5 Amp.
battery capacity (Ah) x percentage of failing charge
Charge time = { —————-———————————————————} x 1,25 =
current supplied by charger (amps)
50 (Ah)x0,75
Charge time = {————————} x 1,25 = 9 hours approx.
5 (A)
When charging, the battery electrolytic fluid should not exceed 40° C.
The charging current is determined by the following formula:
Ah capacity of battery
Normal charge = {———————————}
Should it be necessary to charge several batteries at the same time, where possible, series connection is recommended (see diagram 1). In case of
parallel connection (diagram 2) the charging current of each battery is the amperage shown on the charger ammeter divided by the number of batteries
connected to the charger.
The indications given by the ammeter of the battery charger, in case of sulphated batteries with defective or shorted cells, will not be correct.
75%
1,23
10
50% 25%
1,2 1,16
Ah capacity of battery
- Max charge = {——————————}
10
0%
1,12
5