Schumacher Proseries PSW-7700 Owner'S Manual Download Page 11

With the charger plugged in and connected to the battery of the vehicle, set

4.

the charge rate selector switch to the engine start position.
Crank the engine until it starts or 4 seconds pass. If the engine does not

5.

start, wait 5 minutes before cranking again. This allows the charger and

battery to cool down.

NOTE

: During extremely cold weather, or if the battery is under 2 volts, charge 

the battery for 5 minutes before cranking the engine.

If the engine fails to start, charge the battery for 5 more minutes before

6.

attempting to crank the engine again.
After the engine starts, move the timer switch to the OFF position and

7.

unplug the AC power cord before disconnecting the battery clips from the 

vehicle.
Clean and store the charger in a dry location.

8.

NOTE

: If the engine does turn over but never starts, there is not a problem 

with the starting system; there is a problem somewhere else with the vehicle. 

STOP cranking the engine until the other problem has been diagnosed and 

corrected.

Using the Battery Voltage Tester
Overview

 

This battery charger has a built-in voltmeter to test your battery’s state of 

charge. The charger does not have a built in load tester. As such, a recently 

charged battery could have a temporarily high voltage due to what is known as 

“surface charge”. The voltage of such a battery will gradually drop during the 

period immediately after the charging system is disengaged. Consequently, the 

tester could display inconsistent values for such a battery. For a more accurate 

reading, the surface charge should be removed by temporarily creating a load 

on the battery, such as by turning on lights or other accessories for a couple 

of minutes before you read the display. Read it a couple of minutes after you 

have shut the headlights off.

Testing Sequence

: There are two basic steps required to test the battery state 

of charge:

With the charger unplugged from the AC outlet, connect the charger to the

1.

battery following the instructions given in Sections 6 and 7.
Read the voltage on the voltmeter and compare it to the chart shown

2.

below.

6 Volt Battery 

Voltage Reading

12 Volt Battery 

Voltage Reading

24 Volt Battery 

Voltage Reading

Battery Condition

6.4 or More

12.8 or More

25.6 or More

Charged

6.1 to 6.3

12.2 to 12.7

24.4 to 25.5

Needs Charging

Less than 6.1

Less than 12.2

Less than 24.4

Discharged

General Charging Notes
Fan:

 The charger is designed to control its cooling fan for efficient operation. 

Consequentially, it is normal for the fan to start and stop when maintaining a 

fully charged battery. The fan does not run in Tester Mode. Keep the area near 

the charger clear of obstructions to allow the fan to operate efficiently.

Voltage

: The voltage displayed during charging is the charging voltage and is 

usually higher than the battery’s resting voltage.

Summary of Contents for Proseries PSW-7700

Page 1: ...PSW 7700 Outdoor Approved Manual Battery Charger READ THE ENTIRE MANUAL BEFORE USING THIS PRODUCT FAILURE TO DO SO CAN RESULT IN SERIOUS INJURY OR DEATH OWNER S MANUAL Voltage 6 12 24 Amperage 15 30...

Page 2: ...2 PERSONAL PRECAUTIONS 2 PREPARING TO CHARGE 3 CHARGER LOCATION 4 DC CONNECTION PRECAUTIONS 4 FOLLOW THESE STEPS WHEN BATTERY IS INSTALLED IN VEHICLE 4 FOLLOW THESE STEPS WHEN BATTERY IS OUTSIDE VEHI...

Page 3: ...serious injury to the operator or bystanders Indicates a potentially hazardous situation which if not avoided could result in death or serious injury to the operator or bystanders Indicates a potenti...

Page 4: ...off the controls will not reduce this risk Remove personal metal items such as rings bracelets necklaces and watches 1 6 when working with a lead acid battery A lead acid battery can produce a short...

Page 5: ...away If battery acid is accidentally swallowed drink milk the whites of eggs or water 3 5 DO NOT induce vomiting Seek medical attention immediately If it is necessary to remove the battery from the v...

Page 6: ...o close the hood during the charging process ensure that the hood does not touch the metal part of the battery clips or cut the insulation of the cables Stay clear of fan blades belts pulleys and othe...

Page 7: ...king the final connection 7 5 When disconnecting the charger always do so in the reverse order of the 7 6 connecting procedure and break the first connection while as far away from the battery as prac...

Page 8: ...feet long use an 8 gauge extension cord FEATURES 9 1 2 3 4 5 Ammeter 1 Voltmeter 2 Clips 3 Charge Rate 4 Selector Switch Timer 5 Wheel 6 6 ASSEMBLY INSTRUCTIONS 10 It is important to fully assemble y...

Page 9: ...you determine the appropriate state of charge of your battery as specified in Section 13 and set the timer accordingly Hold This position defeats the timer function allowing for continuous operation B...

Page 10: ...components are in place and in good working 1 condition including the plastic boots on the battery clips Connect the battery following the precautions listed in Sections 6 and 7 2 Select the appropri...

Page 11: ...f such a battery will gradually drop during the period immediately after the charging system is disengaged Consequently the tester could display inconsistent values for such a battery For a more accur...

Page 12: ...r Rating Reserve Capacity 16 2 NOTE The Reserve Capacity can be obtained from the battery specification sheet or the owner s manual To calculate the time needed for a charge Find the percent of charge...

Page 13: ...0 1000 CCA 80 190 RC 2 4 hrs 1 2 hrs 1 2 hrs 40 min 1 hr MARINE DEEP CYCLE 80 RC 2 hrs NR NR NR 140 RC 3 hrs NR NR NR 160 RC 4 hrs NR NR NR 180 RC 4 hrs NR NR NR MAINTENANCE INSTRUCTIONS 14 After use...

Page 14: ...cked Check the charger settings and battery voltage The charger is making an audible clicking sound Circuit breaker is cycling Battery is defective Shorted battery cables or clips Severely discharged...

Page 15: ...rest time before the next crank Check for poor connection at battery and frame Check power cord and extension cord for loose fitting plug Check for open fuse or circuit breaker supplying AC outlet The...

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