MODEL A45E INSTRUCTION MANUAL
Page 10 of 12
TROUBLESHOOTING
Before troubleshooting unit, check for shipping damage, i.e. broken wires, loose connections, etc.
Quick-Check A45E Trouble Analysis
Problem:
Open a.c. input fuse
1.
Check a.c. tap setting diagram and a.c. input
voltage.
2.
Check input and output voltage of control
transformer. NOTE: Voltage across secondary of
control transformer
X1 - X2 = 120Vac;
X3 - X4 = 11Vac;
X5 - X6 = 11Vac;
X3 - X6 = 22Vac.
3.
Check shorted power diode.
Problem:
Open d.c. fuse
1. Check polarity of output cables and connector.
2. Check shorted power diode.
4.
Connectors at d.c. fuse and shunt.
Problem:
Open control transformer
fuse CTF1
1. Check defective contactor (shorted coil).
2. Check control taps set wrong.
3. Check for defective control transformer.
Problem:
Charger finish rate , too low
or too high.
Check setting on control panel (AC1).
- If field adjustments must be made, the taper and
shutdown point may be adjusted. This adjustment
may be made by moving the red slider band on the
voltage reference variable resistor RV1.
Moving this slider band toward the series connected
resistor RV2 raises the shut down or finish rate which
allows the battery voltage to rise to a higher point
before shutting down to a trickle charge. Moving the
red slider band away from the series connected RV2,
lowers the shut down point.
Extreme care should be taken in making the
adjustment. An accurate d.c. voltmeter should be used
and the d.c. voltage at the charger and battery
terminals should be measured. The battery voltage
should not exceed 2.50 volts per cell on a fully charged
battery. Settings above this point may cause excessive
(gassing) use of water and battery heating.
A.) Check for defective control panel (AC1).
1. Red slider band must be connected to wires on
resistor; with volt-ohmmeter, check continuity of
resistor.
2. To Check control panel, disconnect the blue and
black wires going to Terminal #1 on control panel;
