MR MGX Serie Instructions page 3

INSTRUCTIONS FOR MGX BATTERY CHARGERS
The battery chargers of the MGX series are controlled by an internal
microprocessor that enables automatic recharging of batteries and
stores the behaviour of the battery charger during its use.
This device has been developed for a professional use.
For best results and safety, the user is required to read, follow and
keep these instructions carefully.
The manufacturer is not responsible for any damage due to improper
use.
This appliance is not intended for use by persons (including
children) with reduced physical, sensory or mental capabilities,
or lack of experience and knowledge, unless they have been
given supervision or instruction concerning use of the
appliance by a person responsible for their safety.
Children should be supervised to ensure that they do not play
with the appliance.
BATTERY
The battery voltage has to correspond to the MGX rated voltage (see
rating data, for example 24V).
A label on the MGX indicates the correct rechargeable battery type.
Check that it matches the features of your battery. If necessary, it is
possible to change the programming in order to adapt the MGX to
your battery. Make contact with the supplier in order to carry out this
change.
INSTALLATION
To ensure maximum safety, installation has to be carried out as
indicated by the manufacturer.
Any work on the charger must be carried out by qualified and
authorized technical personnel.
WARNING: There is risk of electric shock inside the box.
After unpacking be sure that the device is in perfect condition; in
case of doubt, do not use it and contact the supplier.
It is better to install the MGX indoors, in a room free of humidity,
acids or dust, with room temperature between 0 - 40° C. During use
do not obstruct the ventilation holes. Any overheating of the MGX
will reduce the output current; if overheating continues, charging will
be stopped (see SPECIAL SIGNALS).
ELECTRICAL SUPPLY
Be sure the rating data of the battery charger is compatible with the
mains power supply (single-phase, voltage, frequency, power) . Plug
into a socket equipped with protections that comply with local
standard regulations. If you have to use an extension cable, contact
the manufacturer for correct technical information. The replacement
of the supply cable has to be carried out only by qualified personnel.
BATTERY CONNECTION
Respect the polarity: red wire to + and black wire to -.
Do not use extension cables without the manufacturer's approval.
USE
Connect the battery and the power supply cable. LEDs light up for 2
seconds (PAN. 1), then only the RED LED stays on (PAN. 2). If this
does not happen, check the connection on the battery and supply.
The MGX is unable to activate the charging if the voltage of the
battery is lower than 0.3 V/Cell (i.e., 3.6V for a 24V battery).
If everything is functioning properly the charger performs the whole
charge and stops with the GREEN STOP LED illuminating (PAN. 3).
The time of charge depends on the discharge level, the battery type
and the programmed charge cycle.
For lead acid, gel or AGM batteries, 80% discharged, the whole
recharge lasts 10-14 hours.
Shorter times are possible if the battery is less than 80% discharged.
Longer times are possible if the battery is more than 80%
discharged.
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SPECIAL SIGNALS
When the microprocessor detects a problem, it stops charging and
signals this by flashing the two LEDs
possible problems are:
overheating: the thermal conditions interrupt the current in order
-
to avoid damage
defective battery: the voltage trend shows a possible failure of
-
the battery
incorrect battery: the battery has a higher voltage than the
-
charger (36V battery on a 24V charger).
In order to determine the kind of problem it is necessary to read the
internal MGX data memory (see DATA MEMORY section).
If the two LEDs remain lit (connecting the battery) (PAN. 6), means
an internal problem has occurred. Only the manufacturer can solve
this problem.
CHARGE INTERRUPTION
Power failures interrupt charging and all LEDs go out (PAN. 5); when
the power supply is resumed charging starts again at the point it was
interrupted. If charging has to be interrupted for any reason, switch
off the charger first disconnecting the mains supply and then the
cables connected to the battery.
Never disconnect the battery if the charger is supplying current, as
the resulting spark could ignite the gases produced by the battery
and cause an explosion.
For best charging, disconnect the battery only when the
microprocessor indicates STOP (PAN. 3).
HOLDING
If you leave the MGX on line and connected even during long
periods of inactivity, it is possible to maintain a 100% charge level.
At the end of a charge cycle (device indicating STOP – PAN. 3) the
MGX goes into operation and supplies a small current in order to
keep the battery voltage at 2.25V/Cell. The length of this phase is
unlimited. During the holding phase the display indicates STOP
(PAN. 3).
DATA MEMORY
The internal microprocessor can store a remarkable quantity of
information throughout the life of the MGX. This information can be
read only through
MULTIPROGRAMMER) to be connected to the programming
connector, which is accessible through a socket on the back of the
charger (see Fig. 1).
Contact the supplier for the purchase of a MPTOPII.
Reading this information helps detect the problems and their cause.
It will be easily understood whether they are caused by a malfunction
of the charger or the battery.
It is also possible to understand whether the problems are caused
by the non-compliance of the user with the rules. Be particularly
careful when reading the user's handbooks.
GENERAL RECOMMENDATIONS
Do not let the battery run down completely (maximum 80%): it will
last longer.
Keep the battery contacts free of oxidation. Keep the charging area
well ventilated.
MAINTENANCE
Keep the fan and the ventilation holes clean.
To clean the outside, use a damp cloth.
Use only original spare parts.
If the supply cord is damaged, it must be replaced by the
manufacturer, its service agent or similarly qualified persons in
order to avoid a hazard.
(PAN. 4). The different
the suitable terminal
Pag. 3 di 8
(MPTOPII