12
CONTROLS AND INDICATORS
Charge Rate Selector
switch is a multiposition rotary switch in most of the chargers. The available settings for
each charger are described in Table 1 using Figure 4 to identify the switch positions.
Timer
(most models) switch allows the selection of any charging time, up to 120 minutes. When the selected time
is up, the timer automatically shuts the charger OFF. On manual to automatic Model OS6140, the charger switches
to an automatic on/off mode that will start and stop charging as the battery requires.
Ammeter
indicates the charging current being drawn from the charger by the battery. See
Reading an Ammeter
in
this manual.
Voltmeter
the voltmeter (if so equipped) will indicate voltage whenever the charger is turned on, or when the
clamps are connected to a battery. If the unit is turned on and connected to a battery, it will read the combined
voltage of the battery and the charger. If there is no reading when connected to a battery, check the connections
and/or the battery.
Volt Selector
(Model OS6140 only) allows the selection of 6 Volt or 12 Volt charging. This switch also has an OFF
position to turn the charger OFF.
Voltmeter/Test Meter
(if so equipped) the combination test meter/voltmeter on the front of the charger is used to
read the voltage across the battery charger clamps.
Control Setting Instructions
Charge Voltage and Rate Selection
Set the Rate Selector to the same voltage and charge rate that is appropriate for the size and type of battery being
charged. Use the battery manufacturer’s specific instructions or see the guidelines below. If the battery voltage is
not clearly marked on the battery, refer to the operator’s manual for the vehicle/equipment where the battery is
used/intended to be used. Do not begin charging if the battery voltage cannot be determined. The available
settings are in Table 1.
Small Motorcycle type
3 Amps or less
Lawn mower/tractor
6
Amps or less
Deep-cycle
25 Amps or less
Maintenance-free Automotive or Marine Cranking
45 Amps or less
Heavy-duty Commercial
60 Amps or less
Table 1
. Charge Rate Selector Switch Settings
Charge Rate Selector Switch Settings
Model
Number
A
B
C
D
E
F
OS6110
OS6120
OS6130
OS6150
OS6140
OFF
6V
High/
Start
OFF
OFF
12V
Low
12V
Low
6V
High/
Start
6V
High/
Start
12V
Med.
12V
Med.
12V
Low
12V
Med.
12V
High
12V
High
12V
Med.
12V
High/
Start
12V
Start
12V
Start
12V
High/
Start
24V
High
None
OFF
None
None
Rheostat from 0 Amps to max. Amps
Figure 4.
Rate Selector Switch.
A
B
C
D
E
F
