H. | OUTPUT SELECTOR CONTROLS |
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CHARGE RATE | CHARGE TIME/MINUTES | SF 2001 | ||||||
200 amp start |
| 2 amp |
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| #2 |
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| Ammeter |
40 amp |
| 40 amp |
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| 200 amp |
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VOLT/RATE SELECTOR | CHARGE TIME/MINUTES |
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6 VOLT |
| SF 8050 | BATTERY | |||
60 AMP/200 AMP |
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START |
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6 VOLT |
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30 AMP |
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12 VOLT |
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30 AMP |
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| Voltmeter |
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| LOAD ON | |||||
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OFF |
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| 6 VOLT | |
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12 VOLT |
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| Ammeter |
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60 AMP |
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12 VOLT |
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300 AMP |
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| 12 VOLT | ||
START |
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VOLT/RATE SELECTOR | CHARGE TIME/MINUTES |
12 VOLT |
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10 AMP |
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| 12 VOLT |
12 VOLT | 40 AMP |
MAINTAINER |
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6 VOLT | 12 VOLT |
40 AMP/ | 200 AMP |
100 AMP | START |
START |
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OFF |
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SF 4020
Ammeter
Rotary switch - Use the rotary switch (volt / rate selector, on all models except the SF 2001) to select the charge rate or engine start setting you require. Read the switch dial for those available on this charger.
Load Tester Switch (on SF 8050 only)
Use this switch to apply load to the battery.
Follow these easy steps:
1. | Select the correct setting of the meter ( 6v or 12v ) to agree with |
| the battery to be tested. |
2. | Connect the charger leads to the battery following the instruc- |
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VOLT/RATE SELECTOR | CHARGE TIME/MINUTES |
12 VOLT/10 AMP
6 VOLT/40 AMP START
12VOLT
40AMP
12VOLT
2AMP
6 VOLT | 6 VOLT |
50 AMP | 40AMP/ |
| 100 AMP |
| START |
| OFF |
SF 4022
BATTERY
TEST
Voltmeter
6 VOLT
Ammeter
12 VOLT
3. Press the Load Switch to load on for 10 seconds and read the |
voltmeter. |
Good (green) - indicates the battery capacity is OK. Battery may or may not be fully charged. Check the specific gravity of battery to determine the state of charge. If the specific gravity is less than full charge, check for electrical drain or possible charging system trouble. Recharge battery to full level.
Yellow or Red, but needle remains steady - indicates that the battery capacity is not satisfactory. Battery may be either defective
VOLT/RATE SELECTOR | CHARGE TIME/MINUTES |
6 VOLT
60 AMP/200 AMP START
6VOLT
30AMP
12VOLT
30AMP
OFF
12VOLT
60AMP
12VOLT
300AMP
START
SF 6030
Ammeter
or not fully charged. Check specific gravity to see which condition exists. It charging does not bring the battery specific gravity to full charge, the battery should be replaced.
Yellow or Red, but needle remains falling - indicates the battery may be defective or run down. Release the load switch and note voltmeter reaction. Voltage recovery into green or above within sec- onds indicates a defective battery. Slow recovery indicates run down condition. For best results, check specific gravity.
The Ammeter indicates the amount of current measured in am-
TIMER: The main function of the timer is to prevent over charging while allowing a battery time to obtain a satisfactory charge. To prop- erly 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 reason 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 maxi- mum, 2.25 hours, over charging 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 continu- ous 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 bat- tery is charged.
Switch #1 use this switch to select the 200 amp engine start and the 40 amp charge rate. Switch #2 must be in the down position (40amp /200 amp select) when using switch #1.
Switch #2 Use this switch to select the 2 amp charge rate. Also use to select use of switch #1.
peres that is being drawn by the battery. For example, In the 40 amp charge rate a typical discharged battery will initially draw ap- proximately 40 amps. As the battery continues 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- 300 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 40/50 amps, in this case the needle may be within but not to the extreme 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.
The Voltmeter indicates the voltage at the battery terminals. Note that Model SF 4022 is not a Load tester, but a voltmeter. Use as follows:
1.Charger need not be plugged into AC outlet. Timer should be in the Off position, 6v/12v switch in position to match battery be- ing tested, and then connect following instructions in Section F.
2.Observe the meter indication. Keep in mind that this reading is only a battery voltage reading, a false surface charge may mis- lead you. We suggest that you turn on your headlamps for a couple of minutes before you read the meter. Read a couple of minutes after you have shut the headlamps off, then follow the convenient color code of the meter.
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