allen F-52 User manual

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OPERATING INSTRUCTIONS
FOR THE
ALLEN F-52
PORTABLE FAST CHARGER
CONTENTS
__
SUBJECT
PAGE
NO.
Care
in
Charging
Batteries
------------
1
Charging
Batteries
in
Storage---------
4
Charging
More
than
One
Battery------
4
Charging
Rate
Selector------
o
saee=
se
ae
|
Charging
Sulphated
Batteries
---------
3
Charging
Twelve
Volt
Batteries------
4
Mydromster
Test
=---------------
3
tmporiant
Netes
----*
2-2
5
Operating
Instructions
------------------
2
Purpose
of
the
Charger
------------------
1
Replacement
Parts
List---
Back
of
Book
Schematic
Circuit
--------
Back
of
Book
Starting
Engines---------------------------
3
Writing
the
Factory
--------------------
5
PRICE 50¢
ALLEN ELECTRIC AND EQUIPMENT COMPANY
MANUFACTURERS OF TUNE-UP,
BATTERY, ELECTRICAL AND WELDING EQUIPMENT
2101-2117 NORTH PITCHER STREET
KALAMAZOO 13F, MICHIGAN. U. S. A.
Mil
+
1149
Printed
in
U.S.A,

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THE MODEL F-52
PORTABLE FAST CHARGER
PURPOSE OF THE PORTABLE FAST CHARGER
The Allen Model F-52 is a portable and compact battery charger with ample ca-
pacity for either fast or slow charging. Six charging rates are available
giving up to 75 amperes for fast charging and approximately 10 amperes for
slow
charging.
Actual
rates
depend
upon
the
internal
resistance
of
the
bat-
tery and are shown on the Charger Ammeter.
Reserve capacity is provided to supplement the battery in starting an engine
when
the
battery
does
not
contain
a
sufficient
charge
to
operate
the
vehicle
starting
motor.
Small
size
with
carrying
handle
on
top
together
with
light
weight
makes
this
charger
ideal
for
use
on
service
calls,as
well
as
for
use
in
the
shop.
Operation
is
from
standard
A.C.
supply
circuit.
DO
NOT
connect
to D.C. supply circuit.
CHARGING RATE SELECTOR
The extreme left position marked OFF
turns the charger and ventilating
fan off.
The first position to the right of
OFF marked LOW is a low rate charge
for tapering off after a fast charge
and for keeping new batteries in a
charged condition.
The five positions to the right of
LOW position give increasing steps
of charging rates. The ampere rate
for each step is read on the ammeter
scale.
CHARGING RATE SELECTOR
FIGURE NO. 1
The CHARGING RATE SELECTOR should always be turned to the OFF position when
the battery leads are either connected or disconnected to the battery.
CARE IN CHARGING BATTERIES
The gas which is produced in the battery cells during charging is dangerously
explosive.
Extreme
care
must
be
taken
to
avoid
bringing
open
flames,
lighted
matches,
etc.,
near
batteries
which
are
or
have
been
on
charge,
and
which
are
or
have
been
gassing.
Likewise,
care
must
be
taken
to
avoid
causing
any
sparks
near
the
batteries,
since
this
can
also
set
off
an
explosion
of
the
gases.
PAGE NO. 1

OPERATING INSTRUCTIONS
PROCEDURE
1. Test gravity of battery before charging. (Fig.
No. 2). Batteries with a variation of 25 grav-
ity points or more between cells are defective
and will not hold a charge. Add water if nec-
essary to bring level to approximately 3/8 inch
above top of battery plates.
2. Turn CHARGE RATE SELECTOR to OFF and then insert
attachment plug into A.C. power supply outlet.
Refer to name plate on charger for proper volt-
age and cycles. DO NOT connect to D.C. supply
outlet.
3. Connect Charger CLAMPS to battery cables or ter-
minals in proper polarity. Red CLAMP to POSI-
ve Geass t, ADD TIVE terminal and Black CLAMP to NEGATIVE ter-
WATER IF NECESSARY, minal. Figure No. 3. Connections may be made
FIGURE NO. 2. to the battery without removing it from the ve-
hicle by connecting charger leads in accordance
with the correct polarity.
4. Turn CHARGE RATE SELECTOR to right to secure a
charging rate of approximately 70 to 75 amperes
as noted on the charger AMMETER. If impossible,
assuming power line voltage is normal, see
CHARGING SULPHATED BATTERIES page No. 3. If
gravity reading is higher than 1.250 a fast
charge is not recommended. Use the LOW rate of
approximately 8 to 10 amperes.
5. Charge the battery at the above rate for approx-
imately 50 to 45 minutes. After this time, the
CONNECT CHARGER CLAMPS battery will be serviceable for starting and
FIGURE
NO.
3.
ON
HIGH
RATE
FOR
LONGER
THAN
1
HOUR
AS
DAMAGE
TO THE BATTERY MAY RESULT FROM OVERCHARGING.
6. The characteristics of a battery are such that the greatest rise in gravity
is obtained in the final charging period. Therefore, it is recommended that
the LOW rate of approximately 10 amperes be used following the FAST CHARGE
whenever time permits. Otherwise, the FINISHING CHARGE must depend on the
car generator.
7. Always disconnect the CHARGER CLAMPS from the battery when the CHARGE RATE
SELECTOR is turned to OFF or the charger is disconnected from the power
supply line. DO NOT disconnect Charger Clamps from battery while charging,
as sparks may ignite the hydrogen gas escaping from battery cells.
PAGE NO. 2

IMPORTANT INFORMATION
CHARGING SULPHATED BATTERIES
When
a
battery
remains
in
a
low
state
of
charge
for
an
extended
period
of
time
the
sulphate
on
the
plates
becomes
hardened
and
the
battery
is
then
referred
to
as
sulphated.
The
harder
the
sulphate
becomes,
the
more
difficult
it is
to dis-
solve
by
the
charging
process.
If it is impossible to obtain a 70 ampere charging rate assuming power line
voltage to be normal, the battery is sulphated to the extent its capacity is
decreased. Some batteries may be desulphated by charging the battery for at
least
48
hours
on
the
LOW
rate.
Also,
in
some
cases,
batteries
may
be
desul-
phated
by
a
process
of
charging
and
then
discharging
and
again
recharging,
re-
peating this process several times.
HYDROMETER TEST
The hydrometer shows the degree of charge of the battery as follows:
1.265 - 1.300 Fully Charged
1.235 - 1.260 Three-fourths charged
1.205 - 1.230 One-half charged
1.170 - 1.200 One-fourth charged
1.140 - 1.165 Barely Operative
1.110 - 1.135 Completely discharged
If a battery is completely discharged, there will be very little noticeable
rise in hydrometer reading directly following the forty-five minute charge
period.
HIGH
RATE
CHARGING
IS
NOT
RECOMMENDED
OR
ADVISABLE
FOR
A
BATTERY
READING
1.250
GRAVITY
OR HIGHER.
Large
capacity
batteries
require
a
longer
charging
period
than
those
of
small
capacity.
It
is
suggested
that
the
high
rate
be
continued
for
a
longer
per-
iod
than
the
initial
forty-five
minute
charge
period,
provided
the
tempera-
ture
of
the
solution
does
not
rise
above
125
DEGREES
FAHRENHEIT.
STARTING ENGINES
The F-52 Portable Fast Charger is extremely
valuable as an auxiliary power supply to sup-
plement a low vehicle battery in starting an
engine when the battery will not operate the
cranking motor.
1. Turn CHARGE RATE SELECTOR to OFF position
and plug Charger into A.C. power supply
line.
2. Connect Charger Clamps to Starter Post and
Ground in proper polarity. Fig. No. 4.
3. Adjust CHARGING RATE SELECTOR to one of
the high rate charging positions.
4, Close vehicle starter switch using same OPERATING CRANKING MOTOR
procedure as when starting engine under FIGURE NO. 4
normal conditions.
PAGE NO. 3

BATTERY CHARGING
CHARGING BATTERIES IN STORAGE
It is recommended that batteries in storage or batteries that are idle for a
period of time be given a charge every 30 days. Even though no current is be-
ing withdrawn from the battery, it will self-discharge at a slow rate. The
rate of discharge depends upon the temperature of the air, and is caused by
the chemical action within the battery. The higher the temperature the fast-
er the rate of self-discharge, as shown in Figure No. 5.
Note that in a 90 day period that at
100°F a battery will become completely
discharged, as the gravity will drop
from 1.300 fully charged, to 1.175 com-
pletely discharged. Self-discharge is
particularly damaging to a battery be-
cause the sulphation is harder than the
sulphation normally formed in the battery
and therefore is more difficult to break-
down by the usual charging process. The
battery may be so badly damaged by self-
discharge that it will never come back
to a charged condition. To protect
against this, a battery in storage should
0 10 20 30 40 50 60 70 80 90 be charged every 30 days, to bring it
SPECIFIC GRAVITY
DAYS STANDING back to a fully charged condition. The
CHART OF SELF-DISCHARGE AT rate of charge will depend upon the grav-
VARIOUS TEMPERATURES ity. If gravity is below 1.250, it may
be charged at a FAST RATE and if gravity
is above 1.250, charge at LOW RATE.
CHARGING TWELVE VOLT BATTERIES
Charging twelve volt batteries can be accomplished
with the Charger by charging three cells at a time,
Figure No. 6.
CHARGING MORE THAN ONE BATTERY AT LOW RATE
To slow-charge more than one battery over an ex-
tended period of time, use the following proced-
FIGURE NO. 5
CHARGING THREE CELLS ure;
OF 12 VOLT BATTERY
FIGURE NO. 6 1. Connect batteries in parallel - positive to
positive, and negative to negative, Figure
Now ¢s
2. Gonnect Charger Clamps to line of batteries,
RED to POSITIVE side of battery circuit, and
BLACK to NEGATIVE side.
3. Turn CHARGING RATE SELECTOR to obtain desired
charging rate.
The AMMETER registers the total charging rate to
all batteries. The rate to each battery will be
approximately the rate registered on the Meter,
divided by the number of batteries on charge.
EXAMPLE: Meter registers 50 amperes with five
batteries connected in parallel, indicating 10
CHARGING
BATTERIES
amperes
to
each
battery.
IN PARALLEL
FIGURE NO. 7 PAGE NO. 4
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BATTERY CHARGING —Continued
CHARGING RADIO BATTERIES
Six volt radio batteries can be charged by using the same procedure as for six
volt vehicle batteries. If the battery is of the low discharge type with thick
plates, use the LOW CHARGE rate.
IMPORTANT NOTES
If the A.C. power circuit is interrupted for any reason while the Charger is
operating, disconnect Charger CLAMPS to prevent the battery discharging
through the rectifier unit.
If polarity of battery is not known and battery markings are destroyed, use
a voltmeter to determine polarity before connecting Charger CLAMPS to bat-
tery. Connect RED CLAMP to POSITIVE terminal and BLACK CLAMP to NEGATIVE
terminal.
All connections in the charging circuit to the battery must be clean and
tight.
A gradual taper in the charging rate is normal as the battery voltage in-
creases,
Do not exceed a charge rate of 75 amperes. A higher rate, if maintained
over prolonged periods, will shorten the life of the Rectifier unit.
A low A.C. supply line voltage may cause difficulty in obtaining a 75 am-
pere charging rate.
The Allen Model F-166 Thermometer is designed to measure battery tempera-
ture, and may be purchased through an Allen Distributor. Sulphated bat-
teries should not be FAST CHARGED, if the electrolyte temperature rises in
excess of 110 degrees Fahrenheit. Normal batteries may be FAST CHARGED if
the
electrolyte
temperature
does
not
rise
in
excess
of
125
DEGREES
FAHREN-
HEIT.
The Allen Model E-51C CELL TESTER is used for measuring battery cell volt-
age under load and may be purchased through an Allen Distributor. Defec-
tive cells can be located by measuring the voltage of each cell after
charging. A defective cell will have more than .2 of a volt less than the
good cells of the battery.
WRITING THE FACTORY
Should
it
be
necessary
to
communicate
with
the
factory,
relative
to
your
Charg-
er,
ALWAYS
furnish
its
name,
model
number
and
serial
number
so
that
prompt
and
efficient
attention
can
be
rendered.
PAGE NO. 5