Quick Cable Q720 - Manual (Page 3)

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21. LENGTH OF CHARGE
a. Test the battery for state of charge. Do not charge if it is over 75% charged or the battery is determined to be defective.
b. Set beginning amps charge rate for size of battery and state of charge per charts
c.
Charge for length of time per charge,
d. Discontinue charge when the specific gravity of electrolyte reaches 1.260 or above. A temperature compensating hydrometer should be used
for this reading. Discontinue charge if the battery begins to gas excessively or if the temperature of the electrolyte reaches approximately
125°F. Do not overcharge batteries. Overcharging results in excessive water loss and eventual damage to the battery.
ASSEMBLY INSTRUCTIONS
Attach the handle to the charger using the four screws provided.
OPERATING INSTRUCTIONS
CAUTION - This battery charger must be fully assembled before operating. Failure to do so may result in risk of injury.
USE OF INSTRUMENT PANEL:
The CHARGE TIME timer has an OFF position, a CONTINUOUS CHARGE position and a timed charge range from 0 to
120 minutes.
a. OFF - Always make sure the timer is in the OFF position before connecting or disconnecting the clamps from the
battery. The charger will not charge with the timer in this position.
b. CONTINUOUS CHARGE - This position is used for slow charging or parallel charging and will not turn the charger off.
Do not use this position for fast charging.
c. 0 to 120 MINUTES TIMED CHARGE - The timer will automatically turn the charger off at the end of the pre-set
charging time. Turn the timer past 20 before setting the desired time.
TO CHARGE BATTERIES
Make connections to the battery per the instructions in previous sections of this manual.
Determine if the battery is 6, 12 or 24 volts and then set the CHARGE VOLTAGE switch to 6V for a 6 volt battery, 12LO for a 12 volt battery or 24V for a
24 volt battery.
Turn the timer on and read the AMPERES meter.
If a higher rate of charge is desired for charging 12 volt batteries, set the CHARGE VOLTAGE switch to the 12HI position.
Set the timer to the desired minutes charge.
DO NOT USE THE 12V START POSITION TO CHARGE BATTERIES.
12V CRANKING ASSIST
Turn off all the lights and accessories in the stalled vehicle.
Connect the charger to the battery per previous instructions.
Set the CHARGE VOLTAGE switch to the 12HI position.
Charge the battery on 12HI for at least five minutes. Make sure the battery is accepting current before setting charger to 12V START.
Set the switch in the 12V START position. Start the vehicle with the charger connected to the battery.
NOTE: Do not crank the engine more than 20 seconds in any five minute period; excessive cranking may overheat and damage the starter.
DO NOT USE THE 12V START POSITION TO CHARGE BATTERIES.
If the vehicle fails to start, return the CHARGE VOLTAGE switch to the 12HI position.
While waiting for the starter to cool, allow the charger to continue to charge the battery.
Turn the timer to the OFF position before disconnecting the clamps.
DIESEL VEHICLES
Diesel engines have special starting requirements due to the high compression required to ignite the fuel mixture. Because of this, the starter motors
have to work harder which requires the battery to deliver a large amount of power for a period of time. Adequate voltage must be supplied also to insure
the glow plug will have enough power to preheat the chamber. When attempting to start a diesel vehicle, always fast charge the battery at least five
minutes. If time permits, charge the battery as long as possible or until the battery reaches 75% state of charge. Make sure the battery is accepting
current before setting charger to 12V START. With the charger "ON" and attached to the battery, attempt to start the vehicle. Do not crank the engine
more than 20 seconds in a five-minute period. While allowing the starter to cool, allow the charger to continue to charge the battery. If the vehicle has
two batteries installed, read the "VEHICLES WITH TWO BATTERIES" section of this manual.
VEHICLES WITH TWO BATTERIES
Many diesel vehicles and service vehicles are equipped with two batteries. This is to provide the vehicle with greater starting power capacity or longer
reserve capacity to provide power for accessories. These batteries are wired into a parallel circuit. Because of this, it will take twice as long to charge