Temperature Compensation
A sensor will automatically adjust the charging voltage if the temperature deviates from –20°C to +45°C.
A high temperature environment will lower the voltage and freezing condition is handled by higher voltage. A low
temperature heightens the output voltage, and hot condition is handled by lower voltage.
Voltage compensation
Because of some voltage drop in the cables, the actual voltage at the clamps of the battery can be lower than the
charger output voltage. A special circuitry inside the unit will monitor the true input voltage to the battery and adjust
the output voltage of the unit accordingly. This will maximize the charging efficiency.
Reverse-polarity protection
The charger is equipped with a time delay fuse. This unit offers reverse-polarity protection, the RED
LED will
illuminate and the charging process will not start. If this happens, unplug immediately from mains, connect the red
alligator clip to positive (+) battery post, and black crocodile clip to negative (-) post, then plug into the mains power
and the charging process will start.
Short-circuit protection
Should you accidentally touch the crocodile clips together whilst the mains power is on, the unit will not perform
charging. Unplug from mains, disconnect and start the process again being careful not to touch the clips together.
In Power Supply mode, if short circuit happens to crocodile clip, the RED LED will illuminate Unplug from
mains, disconnect and start the process again being careful not to touch the clips together.
Other features
•
Anti Spark Protection
•
Battery and Charger Overheating Protection, gives a warning buzz while error occurs
•
Waterproof plastic housing
•
Protection class IP65
OPERATION
PLEASE READ CAREFULLY BEFORE USING
Suitable for 6V and 12V Normal Lead Acid, Sealed, Leisure and Gel Batteries between 5-120Ah.
1. Preparing the battery
Firstly remove the caps from each cell and check that the level of the liquid is sufficient in each cell. If it is below
the recommended level, top up with de-ionized or distilled water.
Note:
Under no circumstances should tap water be used.
The cell caps should not be replaced until charging is complete. This allows any gases formed during charging to
escape. It is inevitable that some minor escape of acid will occur during charging.
For permanently sealed battery, it is not necessary to carry out the above checks.
2. Connection
Connect the positive charging lead (RED) to the positive terminal pole of the battery (marked P or +). Connect the
negative charging lead (BLACK) to the negative pole of the battery (marked N or -). It is important to ensure that both
alligator clamps are making good contact with their respective terminal poles.
Connect the charger to the mains supply. Once you have connected the CRX321 battery charger to AC power, it will
sound a tone for 0,5 seconds and the power panel LEDs light for two seconds.
3. Reverse polarity
If the DC battery clamps are connected improperly to the battery terminals, the reverse polarity LED will indicate the
reversed polarity. The battery charger’s warning buzzer will also sound. If this occurs simply disconnect the battery
charger from the AC power. Connect the DC clamps correctly to the battery terminals. Reconnect the charger to the
AC power.
