Jump Starting a vehicle with a discharged battery
• Be sure the switch on the back of the Rescue 4000/4050 is in the OFF position before
connecting clamps to a vehicle for jump starting.
• The Rescue 4000/4050 is equipped with a polarity alarm. If the cables are connected
incorrectly, the alarm will sound. DISCONNECT the cables immediately and check the
polarity of the discharged battery. Reconnect the cables ensuring the positive (red)
battery clamp is on the positive battery terminal and the negative (black) clamp is
connected to a vehicle ground away from the battery.
• If the voltage reading is below 5V, OR if there is no reading at all on the volt meter,
DISCONNECT THE BATTERY CABLES. DO NOT ATTEMPT TO START.
Connect the positive (red) battery clamp to the
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positive terminal of the discharged battery.
Connect the negative (black) battery clamp to
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a suitable vehicle ground such as an alternator
bracket—away from the vehicle battery.
The voltmeter on the front of the Rescue
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4000/4050 will automatically read the voltage of
the discharged battery.
If the voltage is above 5V, turn the switch on
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the back of the Rescue 4000/4050 to the on
position.
The unit is ready to jump start the disabled
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vehicle.
When the vehicle starts, turn Rescue 4000/4050
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off remove the black and then the red battery
clamps and store them in the provided pockets
on the Rescue 4000/4050.
Recharge after use.
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Using the air compressor
(Model 4050)
The model 4050 is supplied with an air hose
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with an integrated inflator and pressure
gauge. A rocker switch on the back panel
turns the compressor on and off.
The compressor has a 40% duty cycle.
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Recharge your portable power pack
Periodically check the internal battery voltage and recharge the unit when the voltage
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drops below 12.5V. Keeping the battery fully charged will insure that your Rescue
4000/4050 is ready when you need it.
The built-in float charger will maintain your battery at full charge. You can safely plug
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the Rescue 4000/4050 into a 120V AC outlet whenever it is not in use to maintain a full
battery charge.
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WARNING – Risk of explosion or fire