March 1, 2001 5-1
193111-047
OPERATION
OPERATION
The operating procedure given here explains the
operation of a Power Star Battery Charger equipped
with the SCR2000 Control.
Preliminary
1. Make sure that charger is installed and grounded
as instructed in this manual.
2. Turn on main fused disconnect switch that
supplies AC power to charger.
3. Maintain electrolyte level in batteries to be
charged, as instructed by battery manufacturer.
The volume of electrolyte will expand during the
charge. Therefore, to avoid overfilling, do not
add water until the battery has received at least
an 80% charge. This will usually be reached at
the time gassing starts.
Normal or Daily Charge
1. Insure that battery size and type matches the
charger and charger settings, (Number of cells
and ampere hour capacity are within nameplate
information).
2. Connect AC power to charger.
3. Connect the battery to the charger.
4. “BID READ” will be displayed for several
seconds; then, after a five second downcount,
the charger will turn on and the “Charge in
Progress” LED will light. The digital display will
indicate output current and output volts per cell.
5. The “80% Charged” LED will light when the
battery voltage has reached the 80% charged
level.
6. When the charge termination point is reached,
the charger will turn off. The “Charge Complete”
LED will be on and the “Equalize” LED will be on
if this was an equalize charge.
Equalize or Weekend Charge
Batteries may need periodic equalizing to correct for
inequalities between cells that result from daily or
frequent cycling. An equalizing charge should be
given if any of the following conditions exist:
1. The specific gravity of any cell at the end of
charge is 20 points less than the average.
2. The on-charge voltage of any cell at the end of
charge is 20mV less than the average.
3. The battery has been stored for 30 days.
4. A large volume of water has been added.
When the equalize mode is desired, follow the opera-
tion outlined for a normal charge and press the
“Equalize” key to set the charge control for an addi-
tional 3 hours more than required for a normal
charge. The charge is complete when charge control
automatically lights the “Charge Complete” LED.
NOTE: The SCR2000 is shipped from the factory
set to the Auto Equalize by Cycle mode, and will
automatically provide an equalize charge every
5 cycles. The manual equalize key is disabled
in this mode. See function #24 (see page 6-8)
in the Programming chapter in this manual to
enable the manual equalize key.
Manual Stop
To stop any charge cycle before charge complete,
press the red “STOP” key. For maximum shift run
times and longest battery life, the charger should be
allowed to always reach charge complete.
WARNING: Do not connect a
battery to this charger if any
lamp is lit. Do not disconnect
a battery from this charger
while a charge is in progress;
otherwise, damage to charger,
arcing and burning of connector
parts or a battery explosion may
result. Batteries produce
explosive gases. Keep sparks,
flame, and cigarettes away.
Ventilate when charging in an
enclosed area. Always shield
eyes when working near
batteries.
AC Power Fail
The SCR2000 Control will resume the charge where it
left off when the AC power failure occurred, virtually
unaffecting charge time. If the battery is discon-
nected from the charger during an AC power failure
and it or any other battery is reconnected, the control
will recognize this when AC power returns and restart
the charge cycle from the beginning. In the case of a
battery with a BID module, the control will only restart
from the beginning if the reconnected battery’s BID
number is different from the one at the time of power
fail.
