H. | OUTPUT SELECTOR CONTROLS |
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| VOLT/RATE SELECTOR | CHARGE TIME/MINUTES |
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| 12 VOLT/10 AMP |
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| 12 VOLT |
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| 12 VOLT | 40 AMP |
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| 2 AMP |
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| 12 VOLT | Ammeter |
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| 6 VOLT |
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| 200 AMP |
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| 40 AMP |
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| START |
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| 100 AMP |
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| START |
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| OFF |
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TIMER: The main function of the timer is to prevent over charg- ing while allowing a battery time to obtain a satisfactory charge. To properly set the timer you must know the size of the battery in ampere hours or reserve capacity in minutes and the state of charge. Often the state of charge is not known, this is one rea- son why the timer was limited to 2.25 hours. With the aid of a battery load tester the state of charge can be obtained within a few seconds. For example, the average size automotive battery at a 50% state of charge will require 1 to 1.5 hours of charging at the 40 amp rate to reach the full charge state. For the same battery with the timer set to it’s maximum, 2.25 hours, over charg- ing will occur, but not likely cause harm to a battery that was other wise in good condition. When the charge state is not known, start out with a timer setting of 1 hour or less.
HOLD This position defeats the timer function, allowing for con- tinuous operation. Use when you want to charge more than 2.25 hours. This is normally the case when the 2 amp charge rate is selected. Be sure to monitor the charging and stop the charge when the battery is charged.
ROTARY SWITCH - Use the rotary switch to select the charge rate or engine start setting you require. Read the switch dial for selections.
AMMETER: The Ammeter indicates the amount of current mea- sured in amperes that is being drawn by the battery. For ex- ample, In the 40 amp charge rate a typical discharged battery will initially draw approximately 40 amps. As the battery contin- ues to charge, current will taper to 15 to 20 amps at full charge. The Start area of the meter indicates a high rate of current being drawn from the charger. When cranking an engine, the starter motor draws upwards to 200 amps. The meter needle will be at the extreme right side of the start area. Sometimes a battery for the first few minutes of it’s charge will draw more than 40/60 amps, in this case the needle may be within but not to the ex- treme right side of the start area. The 2 amp charge rate (on some models) may indicate some activity on the meter. The meter doesn’t have the resolution to display this low rate.
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