Meter and Switch Functions, Model SF-125A

D.	METER AND SWITCH FUNCTIONS

MODEL: SF-125A

12VOLT

2AMP

	6 VOLT	12 VOLT
		125 AMP
	15 AMP
		ENGINE
	MANUAL
		START

12 VOLT

OFF

15 AMP

6 VOLT

125 VOLT ENGINE START

VOLT/AMP SELECTOR FOR MANUAL OPERATION

(For Automatic operation, set dial to any

position except (OFF.)

OFF: This position disconnects AC power supplied by your out- let from the rest of the charger.

6 VOLT 15 AMP: Used for charging medium and large size 6 volt batteries, typical application are for crank starting of farm equipment and antique automobiles. Do not charge small bat- teries such as used in motorcycles, lawn and garden equip- ment.

12 VOLT 2 AMP: The 2 Amp charge rate is recommended for small batteries, motorcycles etc. If used for maintaining the full charge level of larger batteries, limit the charge period to a few days at a time. This amperage setting is both automatic or manual. See switch below.

12 VOLT 125 AMP START: Used for crank starting of 12 volt vehicles. The engine start position should not be used for bat- tery charging, doing so will cause the charger to over heat and thus protect itself by cycling off and on.

12 VOLT 15 AMP: Use for charging medium and large size batteries. This most popular charge rate can operate in either the Automatic or Manual mode of charging. See Automatic/ Manual 3-way Switch.

6 VOLT 125 AMP START: Used for crank starting of 6 volt ve- hicles.

NOTE: Not recommended for use on 8 volt systems.

	BATTERY TYPE SWITCH
	2 AMP, 12 VOLT AUTOMATIC
		▲




MANUAL ▲			▲ 15 AMP, 12 VOLT
				AUTOMATIC

TYPICAL DISPLAY FOR A FULLY	TYPICAL DISPLAY FOR A
CHARGED BATTERY AT THE 15	DISCHARGED BATTERY
AMP CHARGE RATE	AT THE 15 AMP RATE

➘

START

Percent	% 100 75 50 25 0
FULL	REVERSED
CHARGE		HOOKUP
(GREEN ➞	➞	(RED
INDICATOR)	INDICATOR)

METER: The meter indicates the amount of current measured in amperes that is being drawn from the charger by a battery. In the 15 Amp charge rate a typical discharged battery may ini- tially draw more than 15 Amps during the first few minutes of charge. As the battery continues to charge current should gradu- ally taper to within 6 to 8 amps at full charge.

The START area of the meter is reserved to indicate when a high rate of current is being drawn from the charger. It is normal for the meter pointer to be in this area while cranking a vehicle.

When using the 2 amp charge rate the meter may indicate some activity but doesn’t have the resolution to accurately display the battery’s state of charge. For this reason you should depend on the full charge light indicator.

ENGINE START:

1.Set 3-way switch to “MANUAL” setting.

2.Connect the battery charger as outlined in Section H.

3.For best results charge the battery for 10 minutes before cranking the engine at 15 amp setting.

4.Set the rotary charge rate selector switch to the 125 Amp start position that matches the voltage of the vehicle’s battery

– 6 or 12 volt.

5.Crank the engine for 5 seconds, if the engine fails to start, set the charge rate switch to the 15 Amp rate and charge the battery for the next 5 to 10 minutes before cranking again.

6.If the engine fails to start after several tries, there maybe a problem elsewhere in the vehicle.